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Conserved domains on  [gi|2125674317|gb|UDP53939|]
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PsbA, partial (chloroplast) [Zonaria subarticulata]

Protein Classification

photosynthetic reaction center family protein( domain architecture ID 607)

photosynthetic reaction center family protein is a subunit of a photosynthetic system that utilizes light-induced electron transfer to generate protons that power reactions such as the synthesis of ATP, similar to photosystem II protein D

Graphical summary

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List of domain hits

Name Accession Description Interval E-value
Photo_RC super family cl08220
D1, D2 subunits of photosystem II (PSII); M, L subunits of bacterial photosynthetic reaction ...
1-304 0e+00

D1, D2 subunits of photosystem II (PSII); M, L subunits of bacterial photosynthetic reaction center; This protein superfamily contains the D1, D2 subunits of the photosystem II (PS II) and the M, L subunits of the bacterial photosynthetic reaction center (RC). These four proteins are highly homologous and share a common fold. PS II is a multi-subunit protein found in the photosynthetic membranes of plants, algae, and cyanobacteria. It utilizes light-induced electron transfer and water-splitting reactions to produce protons, electrons, and molecular oxygen. The protons generated are instrumental in ATP formation. Bacterial photosynthetic reaction center (RC) complex is found in photosynthetic bacteria, such as purple bacteria and other proteobacteria species. It couples light-induced electron transfer to proton pumping across the membrane by reactions of a quinone molecule (QB) that binds two electrons and two protons at the active site. Protons are translocated from the bacterial cytoplasm to the periplasmic space, generating an electrochemical gradient of protons (the protonmotive force) that can be used to power reactions such as the synthesis of ATP.


The actual alignment was detected with superfamily member TIGR01151:

Pssm-ID: 447584 [Multi-domain]  Cd Length: 360  Bit Score: 588.83  E-value: 0e+00
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:TIGR01151  22 TSTENRLYIGWFGVLMIPTLLTATSCFIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVVPSSNAIGLHFYPIWEAAS 101
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:TIGR01151 102 LDEWLYNGGPYQLIVFHFLLGVACYMGREWELSYRLGMRPWICVAYSAPVAAATAVFLIYPIGQGSFSDGMPLGISGTFN 181
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAHGYFGRLIFQ 240
Cdd:TIGR01151 182 FMIVFQAEHNILMHPFHMLGVAGVFGGSLFSAMHGSLVTSSLIRETTENESANYGYKFGQEEETYNIVAAHGYFGRLIFQ 261
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125674317 241 YASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:TIGR01151 262 YASFNNSRSLHFFLAAWPVVGIWFTALGISTMAFNLNGFNFNQSVVDSQGRVINTWADIINRAN 325
 
Name Accession Description Interval E-value
psbA TIGR01151
photosystem II, DI subunit (also called Q(B)); This model describes the Photosystem II, DI ...
1-304 0e+00

photosystem II, DI subunit (also called Q(B)); This model describes the Photosystem II, DI subunit (also called Q(B)) in bacterial and its equivalents in chloroplast of algae and higher plants. Photosystem II is many ways functionally equivalent to bacterial reaction center. At the core of Photosystem II are several light harvesting cofactors including plastoquinones, pheophytins, phyloquinones etc. These cofactors are intimately associated with the polypeptides, which principally including subunits DI, DII, Cyt.b, Cyt.f and iron-sulphur protein. Together they participate in the electron transfer reactions that lead to the net production of the reducting equivalents in the form of NADPH, which are used for reduction of CO2 to carbohydrates(C6H1206). Phosystem II operates during oxygenic photosynthesis and principal electron donor is H2O. Although no structural data is presently available, a huge body of literature exits that describes function using a variety of biochemical and biophysical techniques. [Energy metabolism, Electron transport, Energy metabolism, Photosynthesis]


Pssm-ID: 130221 [Multi-domain]  Cd Length: 360  Bit Score: 588.83  E-value: 0e+00
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:TIGR01151  22 TSTENRLYIGWFGVLMIPTLLTATSCFIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVVPSSNAIGLHFYPIWEAAS 101
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:TIGR01151 102 LDEWLYNGGPYQLIVFHFLLGVACYMGREWELSYRLGMRPWICVAYSAPVAAATAVFLIYPIGQGSFSDGMPLGISGTFN 181
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAHGYFGRLIFQ 240
Cdd:TIGR01151 182 FMIVFQAEHNILMHPFHMLGVAGVFGGSLFSAMHGSLVTSSLIRETTENESANYGYKFGQEEETYNIVAAHGYFGRLIFQ 261
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125674317 241 YASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:TIGR01151 262 YASFNNSRSLHFFLAAWPVVGIWFTALGISTMAFNLNGFNFNQSVVDSQGRVINTWADIINRAN 325
Photosystem-II_D1 cd09289
D1 subunit of photosystem II (PS II); Photosystem II (PS II), D2 subunit. PS II is a ...
1-304 0e+00

D1 subunit of photosystem II (PS II); Photosystem II (PS II), D2 subunit. PS II is a multi-subunit protein found in the photosynthetic membranes of plants, algae, and cyanobacteria. It utilizes light-induced electron transfer and water-splitting reactions to produce protons, electrons, and molecular oxygen. The protons generated are instrumental in ATP formation. Molecular dioxygen is released as a by-product. PS II can be described as containing two parts: the photochemical part and the catalytic part. The photochemical portion promotes the fast, efficient light-induced charge separation and stabilization that occur when light is absorbed by chlorophyll. The catalytic portion, where water is oxidized, involves a cluster of Mn ions close to a redox-active tyrosine residue. The Mn cluster and its ligands form a functional unit called the oxygen-evolving complex (OEC) or the water-oxidizing complex (WOC). The D1 and D2 subunits are a pair of interwined polypeptides. They contain all the cofactors involved directly in water oxidation and plastoquinone reduction. The D1 subunit contains the Mn cluster that constitutes the site of water oxidation. D1 and D2 are highly homologous and are also similar to the L and M proteins in bacterial photosynthetic reaction centers.


Pssm-ID: 187747  Cd Length: 338  Bit Score: 579.91  E-value: 0e+00
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:cd09289    16 TSTENRLYIGWFGVLMIPTLLTATSVFIIAFIAAPPVDIDGIREPVSGSLLYGNNIISGAVVPTSNAIGLHFYPIWEAAS 95
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:cd09289    96 LDEWLYNGGPYQLIVLHFLLGVCCYMGREWELSYRLGMRPWIAVAYSAPVAAATAVFLIYPIGQGSFSDGMPLGISGTFN 175
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAHGYFGRLIFQ 240
Cdd:cd09289   176 FMIVFQAEHNILMHPFHMLGVAGVFGGSLFSAMHGSLVTSSLIRETTENESANAGYKFGQEEETYNIVAAHGYFGRLIFQ 255
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125674317 241 YASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:cd09289   256 YASFNNSRSLHFFLAAWPVVGIWFTALGISTMAFNLNGFNFNQSVVDSQGRVINTWADIINRAN 319
PLN00056 PLN00056
photosystem Q(B) protein; Provisional
1-304 0e+00

photosystem Q(B) protein; Provisional


Pssm-ID: 177687  Cd Length: 353  Bit Score: 503.89  E-value: 0e+00
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:PLN00056   22 TSTENRLYIGWFGVLMIPTLLTATSVFIIAFIAAPPVDIDGIREPVSGSLLYGNNIISGAIIPTSAAIGLHFYPIWEAAS 101
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:PLN00056  102 VDEWLYNGGPYELIVLHFLLGVACYMGREWELSFRLGMRPWIAVAYSAPVAAATAVFLIYPIGQGSFSDGMPLGISGTFN 181
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAHGYFGRLIFQ 240
Cdd:PLN00056  182 FMIVFQAEHNILMHPFHMLGVAGVFGGSLFSAMHGSLVTSSLIRETTENESANEGYRFGQEEETYNIVAAHGYFGRLIFQ 261
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125674317 241 YASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:PLN00056  262 YASFNNSRSLHFFLAAWPVVGIWFTALGISTMAFNLNGFNFNQSVVDSQGRVINTWADIINRAN 325
PsbA COG5716
Photosystem II reaction center D1, PsbA [Energy production and conversion]; Photosystem II ...
1-304 3.80e-167

Photosystem II reaction center D1, PsbA [Energy production and conversion]; Photosystem II reaction center D1, PsbA is part of the Pathway/BioSystem: Photosystem II


Pssm-ID: 444426  Cd Length: 356  Bit Score: 468.04  E-value: 3.80e-167
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:COG5716    25 TSTENRIYLGWFGVLMIPTLLTAFIIFGIAFLAAPPVDMDGIREPVIGSLLFGNNLITAAVEPPSPAIGLHFYPIWEAAS 104
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:COG5716   105 MDEWLYNGGPYQLIVFHFLIGIWAYWGRTWELSYRLGMRPWIAWAFAAPVAAATSVGLVYPIGQGSFSEGVPLGIFGTFD 184
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAH-GYFGRLIF 239
Cdd:COG5716   185 FMLAFQADHNILMNPFHMLGVAGVYGGALLFAMHGSLVTSVLRRETTESESINAGYFGGQRELTYIVDRGTaGERARLFW 264
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 2125674317 240 QYASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:COG5716   265 RWTMGFNARSIHFWLAAFPVLGIWTAGLGILLTAFNLNGFNVDNSIWDSQGRFIPTYADLINRAN 329
Photo_RC pfam00124
Photosynthetic reaction centre protein;
7-297 2.39e-86

Photosynthetic reaction centre protein;


Pssm-ID: 425477  Cd Length: 260  Bit Score: 259.49  E-value: 2.39e-86
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   7 LYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIdgirepvaGSLLYGNNIISGAVIPSSNAIGIHFYPIWeaasveewly 86
Cdd:pfam00124   1 FYVGFFGVLSIPTALLATFIIGIGFVAAPSVDW--------SPLLFGRNLITLAIEPPSPSYGLSFPPLW---------- 62
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  87 NGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFNFMIVFQ 166
Cdd:pfam00124  63 EGGLWQIITFHATIAFISWWLREYEIARKLGMGPHIAWAFSAAIAAYLSLGLIRPILMGSWSEGFPLGIFPHLDWTSNFS 142
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 167 AEH-NILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIR-ETSEVESVNYGYKFGQEEETYnivaahgYFGRLIFQYasf 244
Cdd:pfam00124 143 YRYgNFLYNPFHMLGIAFLFGSALLLAMHGALVLSVLRPgGTREVESINDRGTAGEREATF-------WRWTMGFNA--- 212
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|...
gi 2125674317 245 nNSRALHFFLAAWPVVGIWLTALGVSTMAfnlngfnfnqSVVDSEGRVINTWA 297
Cdd:pfam00124 213 -NSRSIHRWGLWFAVLGIWTSAIGILLSG----------TVVDNQWPEWWTWA 254
 
Name Accession Description Interval E-value
psbA TIGR01151
photosystem II, DI subunit (also called Q(B)); This model describes the Photosystem II, DI ...
1-304 0e+00

photosystem II, DI subunit (also called Q(B)); This model describes the Photosystem II, DI subunit (also called Q(B)) in bacterial and its equivalents in chloroplast of algae and higher plants. Photosystem II is many ways functionally equivalent to bacterial reaction center. At the core of Photosystem II are several light harvesting cofactors including plastoquinones, pheophytins, phyloquinones etc. These cofactors are intimately associated with the polypeptides, which principally including subunits DI, DII, Cyt.b, Cyt.f and iron-sulphur protein. Together they participate in the electron transfer reactions that lead to the net production of the reducting equivalents in the form of NADPH, which are used for reduction of CO2 to carbohydrates(C6H1206). Phosystem II operates during oxygenic photosynthesis and principal electron donor is H2O. Although no structural data is presently available, a huge body of literature exits that describes function using a variety of biochemical and biophysical techniques. [Energy metabolism, Electron transport, Energy metabolism, Photosynthesis]


Pssm-ID: 130221 [Multi-domain]  Cd Length: 360  Bit Score: 588.83  E-value: 0e+00
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:TIGR01151  22 TSTENRLYIGWFGVLMIPTLLTATSCFIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVVPSSNAIGLHFYPIWEAAS 101
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:TIGR01151 102 LDEWLYNGGPYQLIVFHFLLGVACYMGREWELSYRLGMRPWICVAYSAPVAAATAVFLIYPIGQGSFSDGMPLGISGTFN 181
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAHGYFGRLIFQ 240
Cdd:TIGR01151 182 FMIVFQAEHNILMHPFHMLGVAGVFGGSLFSAMHGSLVTSSLIRETTENESANYGYKFGQEEETYNIVAAHGYFGRLIFQ 261
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125674317 241 YASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:TIGR01151 262 YASFNNSRSLHFFLAAWPVVGIWFTALGISTMAFNLNGFNFNQSVVDSQGRVINTWADIINRAN 325
Photosystem-II_D1 cd09289
D1 subunit of photosystem II (PS II); Photosystem II (PS II), D2 subunit. PS II is a ...
1-304 0e+00

D1 subunit of photosystem II (PS II); Photosystem II (PS II), D2 subunit. PS II is a multi-subunit protein found in the photosynthetic membranes of plants, algae, and cyanobacteria. It utilizes light-induced electron transfer and water-splitting reactions to produce protons, electrons, and molecular oxygen. The protons generated are instrumental in ATP formation. Molecular dioxygen is released as a by-product. PS II can be described as containing two parts: the photochemical part and the catalytic part. The photochemical portion promotes the fast, efficient light-induced charge separation and stabilization that occur when light is absorbed by chlorophyll. The catalytic portion, where water is oxidized, involves a cluster of Mn ions close to a redox-active tyrosine residue. The Mn cluster and its ligands form a functional unit called the oxygen-evolving complex (OEC) or the water-oxidizing complex (WOC). The D1 and D2 subunits are a pair of interwined polypeptides. They contain all the cofactors involved directly in water oxidation and plastoquinone reduction. The D1 subunit contains the Mn cluster that constitutes the site of water oxidation. D1 and D2 are highly homologous and are also similar to the L and M proteins in bacterial photosynthetic reaction centers.


Pssm-ID: 187747  Cd Length: 338  Bit Score: 579.91  E-value: 0e+00
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:cd09289    16 TSTENRLYIGWFGVLMIPTLLTATSVFIIAFIAAPPVDIDGIREPVSGSLLYGNNIISGAVVPTSNAIGLHFYPIWEAAS 95
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:cd09289    96 LDEWLYNGGPYQLIVLHFLLGVCCYMGREWELSYRLGMRPWIAVAYSAPVAAATAVFLIYPIGQGSFSDGMPLGISGTFN 175
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAHGYFGRLIFQ 240
Cdd:cd09289   176 FMIVFQAEHNILMHPFHMLGVAGVFGGSLFSAMHGSLVTSSLIRETTENESANAGYKFGQEEETYNIVAAHGYFGRLIFQ 255
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125674317 241 YASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:cd09289   256 YASFNNSRSLHFFLAAWPVVGIWFTALGISTMAFNLNGFNFNQSVVDSQGRVINTWADIINRAN 319
PLN00056 PLN00056
photosystem Q(B) protein; Provisional
1-304 0e+00

photosystem Q(B) protein; Provisional


Pssm-ID: 177687  Cd Length: 353  Bit Score: 503.89  E-value: 0e+00
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:PLN00056   22 TSTENRLYIGWFGVLMIPTLLTATSVFIIAFIAAPPVDIDGIREPVSGSLLYGNNIISGAIIPTSAAIGLHFYPIWEAAS 101
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:PLN00056  102 VDEWLYNGGPYELIVLHFLLGVACYMGREWELSFRLGMRPWIAVAYSAPVAAATAVFLIYPIGQGSFSDGMPLGISGTFN 181
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAHGYFGRLIFQ 240
Cdd:PLN00056  182 FMIVFQAEHNILMHPFHMLGVAGVFGGSLFSAMHGSLVTSSLIRETTENESANEGYRFGQEEETYNIVAAHGYFGRLIFQ 261
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125674317 241 YASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:PLN00056  262 YASFNNSRSLHFFLAAWPVVGIWFTALGISTMAFNLNGFNFNQSVVDSQGRVINTWADIINRAN 325
psbA CHL00003
photosystem II protein D1
1-304 4.27e-176

photosystem II protein D1


Pssm-ID: 176948  Cd Length: 338  Bit Score: 490.17  E-value: 4.27e-176
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:CHL00003   16 TSTENRLYIGWFGVLMIPTLLTATSVFIIAFIAAPPVDIDGIREPVSGSLLYGNNIISGAIIPSSAAIGLHFYPIWEAAS 95
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:CHL00003   96 VDEWLYNGGPYELIVLHFLLGVACYMGREWELSFRLGMRPWIAVAYSAPVAAATAVFLIYPIGQGSFSDGMPLGISGTFN 175
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAHGYFGRLIFQ 240
Cdd:CHL00003  176 FMIVFQAEHNILMHPFHMLGVAGVFGGSLFSAMHGSLVTSSLIRETTENESANLGYKFGQEEETYNIVAAHGYFGRLIFQ 255
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....
gi 2125674317 241 YASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:CHL00003  256 YASFNNSRSLHFFLAAWPVVGIWFTALGISTMAFNLNGFNFNQSVVDSQGRVINTWADIINRAN 319
PsbA COG5716
Photosystem II reaction center D1, PsbA [Energy production and conversion]; Photosystem II ...
1-304 3.80e-167

Photosystem II reaction center D1, PsbA [Energy production and conversion]; Photosystem II reaction center D1, PsbA is part of the Pathway/BioSystem: Photosystem II


Pssm-ID: 444426  Cd Length: 356  Bit Score: 468.04  E-value: 3.80e-167
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   1 TSTENRLYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIREPVAGSLLYGNNIISGAVIPSSNAIGIHFYPIWEAAS 80
Cdd:COG5716    25 TSTENRIYLGWFGVLMIPTLLTAFIIFGIAFLAAPPVDMDGIREPVIGSLLFGNNLITAAVEPPSPAIGLHFYPIWEAAS 104
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  81 VEEWLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFN 160
Cdd:COG5716   105 MDEWLYNGGPYQLIVFHFLIGIWAYWGRTWELSYRLGMRPWIAWAFAAPVAAATSVGLVYPIGQGSFSEGVPLGIFGTFD 184
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 161 FMIVFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVESVNYGYKFGQEEETYNIVAAH-GYFGRLIF 239
Cdd:COG5716   185 FMLAFQADHNILMNPFHMLGVAGVYGGALLFAMHGSLVTSVLRRETTESESINAGYFGGQRELTYIVDRGTaGERARLFW 264
                         250       260       270       280       290       300
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*
gi 2125674317 240 QYASFNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNFNQSVVDSEGRVINTWADIINRAD 304
Cdd:COG5716   265 RWTMGFNARSIHFWLAAFPVLGIWTAGLGILLTAFNLNGFNVDNSIWDSQGRFIPTYADLINRAN 329
Photo_RC pfam00124
Photosynthetic reaction centre protein;
7-297 2.39e-86

Photosynthetic reaction centre protein;


Pssm-ID: 425477  Cd Length: 260  Bit Score: 259.49  E-value: 2.39e-86
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   7 LYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIdgirepvaGSLLYGNNIISGAVIPSSNAIGIHFYPIWeaasveewly 86
Cdd:pfam00124   1 FYVGFFGVLSIPTALLATFIIGIGFVAAPSVDW--------SPLLFGRNLITLAIEPPSPSYGLSFPPLW---------- 62
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  87 NGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFNFMIVFQ 166
Cdd:pfam00124  63 EGGLWQIITFHATIAFISWWLREYEIARKLGMGPHIAWAFSAAIAAYLSLGLIRPILMGSWSEGFPLGIFPHLDWTSNFS 142
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 167 AEH-NILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIR-ETSEVESVNYGYKFGQEEETYnivaahgYFGRLIFQYasf 244
Cdd:pfam00124 143 YRYgNFLYNPFHMLGIAFLFGSALLLAMHGALVLSVLRPgGTREVESINDRGTAGEREATF-------WRWTMGFNA--- 212
                         250       260       270       280       290
                  ....*....|....*....|....*....|....*....|....*....|...
gi 2125674317 245 nNSRALHFFLAAWPVVGIWLTALGVSTMAfnlngfnfnqSVVDSEGRVINTWA 297
Cdd:pfam00124 213 -NSRSIHRWGLWFAVLGIWTSAIGILLSG----------TVVDNQWPEWWTWA 254
Photo_RC cd09223
D1, D2 subunits of photosystem II (PSII); M, L subunits of bacterial photosynthetic reaction ...
84-272 8.51e-56

D1, D2 subunits of photosystem II (PSII); M, L subunits of bacterial photosynthetic reaction center; This protein superfamily contains the D1, D2 subunits of the photosystem II (PS II) and the M, L subunits of the bacterial photosynthetic reaction center (RC). These four proteins are highly homologous and share a common fold. PS II is a multi-subunit protein found in the photosynthetic membranes of plants, algae, and cyanobacteria. It utilizes light-induced electron transfer and water-splitting reactions to produce protons, electrons, and molecular oxygen. The protons generated are instrumental in ATP formation. Bacterial photosynthetic reaction center (RC) complex is found in photosynthetic bacteria, such as purple bacteria and other proteobacteria species. It couples light-induced electron transfer to proton pumping across the membrane by reactions of a quinone molecule (QB) that binds two electrons and two protons at the active site. Protons are translocated from the bacterial cytoplasm to the periplasmic space, generating an electrochemical gradient of protons (the protonmotive force) that can be used to power reactions such as the synthesis of ATP.


Pssm-ID: 187745 [Multi-domain]  Cd Length: 199  Bit Score: 179.19  E-value: 8.51e-56
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  84 WLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFNFMI 163
Cdd:cd09223    20 IGIAGGLWQIITFHALGAFISWMLRQVEIARKLGMGPHIAVAFSAPIASFFVLFLIRPIGQGSWSDAFPYGISSHLDWVN 99
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 164 VFQAEH-NILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSEVEsvnygykfGQEEETYNIVAAHGYFGRLIFQYA 242
Cdd:cd09223   100 NFQYEHnNWHYNPFHMLGVAFVFGGALLCAMHGALVLSVLNPEGEETE--------GQEAEEYNTAEHANYFWRDIFGYA 171
                         170       180       190
                  ....*....|....*....|....*....|
gi 2125674317 243 SFNnsRALHFFLAAWPVVGIWLTALGVSTM 272
Cdd:cd09223   172 IGN--RSIHRFGLFLAVVGVWFSAIGIITS 199
Photosystem-II_D2 cd09288
D2 subunit of photosystem II (PS II); Photosystem II (PS II), D2 subunit. PS II is a ...
7-281 1.04e-41

D2 subunit of photosystem II (PS II); Photosystem II (PS II), D2 subunit. PS II is a multi-subunit protein found in the photosynthetic membranes of plants, algae, and cyanobacteria. It utilizes light-induced electron transfer and water-splitting reactions to produce protons, electrons, and molecular oxygen. The protons generated are instrumental in ATP formation. Molecular dioxygen is released as a by-product. PS II can be described as containing two parts: the photochemical part and the catalytic part. The photochemical portion promotes the fast, efficient light-induced charge separation and stabilization that occur when light is absorbed by chlorophyll. The catalytic portion, where water is oxidized, involves a cluster of Mn ions close to a redox-active tyrosine residue. The Mn cluster and its ligands form a functional unit called the oxygen-evolving complex (OEC) or the water-oxidizing complex (WOC). The D1 and D2 subunits are a pair of intertwined polypeptides. They contain all the cofactors involved directly in water oxidation and plastoquinone reduction. D1 and D2 are highly homologous and are also similar to the L and M proteins in bacterial photosynthetic reaction centers.


Pssm-ID: 187746  Cd Length: 339  Bit Score: 147.05  E-value: 1.04e-41
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   7 LYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIrepvAGSLLYGNNIISGAVIPSSNAIGIHFYPIW--EA-ASVEE 83
Cdd:cd09288    15 VFVGWSGLLLFPCAYLALGGWFTGTTFVTSWYTHGL----ASSYLEGCNFLTAAVSTPANSMGHSLLLLWgpEAqGDFTR 90
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  84 WLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFNFMI 163
Cdd:cd09288    91 WCQLGGLWTFVALHGAFGLIGFMLRQFEIARSVGIRPYNAIAFSGPIAVFVSVFLIYPLGQSGWFFAPSFGVAAIFRFIL 170
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 164 VFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIrETSEVESVNYGYKFGQEEETYNIVAAHGYFGRlIFQYAs 243
Cdd:cd09288   171 FFQGFHNWTLNPFHMMGVAGVLGAALLCAIHGATVENTLF-EDGDGANTFRAFNPTQAEETYSMVTANRFWSQ-IFGVA- 247
                         250       260       270
                  ....*....|....*....|....*....|....*...
gi 2125674317 244 FNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNF 281
Cdd:cd09288   248 FSNKRWLHFFMLFVPVTGLWMSAIGVVGLALNLRAYDF 285
psbD CHL00004
photosystem II protein D2
7-281 1.04e-36

photosystem II protein D2


Pssm-ID: 176949  Cd Length: 353  Bit Score: 134.21  E-value: 1.04e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   7 LYIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIrepvAGSLLYGNNIISGAVIPSSNAIGIHFYPIW--EA-ASVEE 83
Cdd:CHL00004   29 VFVGWSGLLLFPCAYFALGGWFTGTTFVTSWYTHGL----ASSYLEGCNFLTAAVSTPANSLAHSLLLLWgpEAqGDFTR 104
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  84 WLYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFNFMI 163
Cdd:CHL00004  105 WCQLGGLWTFVALHGAFGLIGFMLRQFELARSVQLRPYNAIAFSGPIAVFVSVFLIYPLGQSGWFFAPSFGVAAIFRFIL 184
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 164 VFQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIrETSEVESVNYGYKFGQEEETYNIVAAHGYFGRlIFQYAs 243
Cdd:CHL00004  185 FFQGFHNWTLNPFHMMGVAGVLGAALLCAIHGATVENTLF-EDGDGANTFRAFNPTQAEETYSMVTANRFWSQ-IFGVA- 261
                         250       260       270
                  ....*....|....*....|....*....|....*...
gi 2125674317 244 FNNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNF 281
Cdd:CHL00004  262 FSNKRWLHFFMLFVPVTGLWMSAIGVVGLALNLRAYDF 299
PLN00074 PLN00074
photosystem II D2 protein (PsbD); Provisional
8-281 6.20e-36

photosystem II D2 protein (PsbD); Provisional


Pssm-ID: 215048  Cd Length: 353  Bit Score: 132.09  E-value: 6.20e-36
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317   8 YIGWFGCLMIPTLLTAASCYIIAFIAAPPVDIDGIrepvAGSLLYGNNIISGAVIPSSNAIGIHFYPIW--EA-ASVEEW 84
Cdd:PLN00074   30 FVGWSGLLLFPCAYFALGGWFTGTTFVTSWYTHGL----ASSYLEGCNFLTAAVSTPANSLAHSLLLLWgpEAqGDFTRW 105
                          90       100       110       120       130       140       150       160
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  85 LYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFNFMIV 164
Cdd:PLN00074  106 CQLGGLWTFVALHGAFGLIGFMLRQFELARSVQLRPYNAIAFSGPIAVFVSVFLIYPLGQSGWFFAPSFGVAAIFRFILF 185
                         170       180       190       200       210       220       230       240
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317 165 FQAEHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIrETSEVESVNYGYKFGQEEETYNIVAAHGYFGRlIFQYAsF 244
Cdd:PLN00074  186 FQGFHNWTLNPFHMMGVAGVLGAALLCAIHGATVENTLF-EDGDGANTFRAFNPTQAEETYSMVTANRFWSQ-IFGVA-F 262
                         250       260       270
                  ....*....|....*....|....*....|....*..
gi 2125674317 245 NNSRALHFFLAAWPVVGIWLTALGVSTMAFNLNGFNF 281
Cdd:PLN00074  263 SNKRWLHFFMLFVPVTGLWMSALGVVGLALNLRAYDF 299
Photo-RC_L cd09290
Subunit L of bacterial photosynthetic reaction center; Bacterial photosynthetic reaction ...
88-200 8.40e-06

Subunit L of bacterial photosynthetic reaction center; Bacterial photosynthetic reaction center (RC) complex, subunit L. The bacterial photosynthetic reaction center couples light-induced electron transfer with pumping protons across the membrane using reactions involving a quinone molecule (QB) that binds two electrons and two protons at the active site. The reaction center consists of three membrane-bound subunits, designated L, M, and H, plus an additional extracellular cytochrome subunit. The L and M subunits are arranged around an axis of 2-fold rotational symmetry perpendicular to the membrane, forming a scaffold that maintains the cofactors in a precise configuration. The L and M subunits have both sequence and structural similarity, suggesting a common evolutionary origin. The L and M subunits bind noncovalently to the nine cofactors in 2-fold symmetric branches: four bacteriochlorophylls (Bchl), two bacteriopheophytins (Bphe), two ubiquinone molecules (QA and QB), and a non-heme iron. Two Bchls on the periplasmic side of the membrane form the 'special pair' or dimer which is the primary electron donor for the photosynthetic reactions. The electron transfer reaction proceeds from the dimer to an intermediate acceptor (PA), a primary quinone (QA), and a secondary quinone (QB). Protons are translocated from the bacterial cytoplasm to the periplasmic space, generating an electrochemical gradient of protons (the protonmotive force) that can be used to power reactions such as ATP synthesis. The RC complex is found in photosynthetic bacteria, such as purple bacteria and other proteobacteria species.


Pssm-ID: 187748  Cd Length: 273  Bit Score: 46.28  E-value: 8.40e-06
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  88 GGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFNFMIVFQA 167
Cdd:cd09290    84 GGLWQIITVCATGAFVSWALRQVEISRKLGMGYHVPIAFGVAISAYLTLQVIRPILMGAWGHGFPYGIMSHLDWVSNFGY 163
                          90       100       110
                  ....*....|....*....|....*....|....
gi 2125674317 168 EH-NILMHPFHMAGVAGVFGGSLFSAMHGSLVTS 200
Cdd:cd09290   164 QYlNFHYNPAHMIAITFLFTNTLALSMHGSLILS 197
PsbD COG5719
Photosystem II reaction center D2, PsbD [Energy production and conversion]; Photosystem II ...
85-200 7.59e-05

Photosystem II reaction center D2, PsbD [Energy production and conversion]; Photosystem II reaction center D2, PsbD is part of the Pathway/BioSystem: Photosystem II


Pssm-ID: 444429  Cd Length: 316  Bit Score: 43.50  E-value: 7.59e-05
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  85 LYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMR---PWIFVAFSAPVAAASavfLVYPIGQGSFSDGMPLGISG---- 157
Cdd:COG5719   109 LAEGGWWQIATFFLTGSFLSWWLREYERARKLGMGthvPWAFAAAIFLYLVLG---VIRPLLMGSWGEAVPYGIFPhldw 185
                          90       100       110       120
                  ....*....|....*....|....*....|....*....|...
gi 2125674317 158 TFNFMIVFQaehNILMHPFHMAGVAGVFGGSLFSAMHGSLVTS 200
Cdd:COG5719   186 TSNFSYRYG---NFHYNPFHMLSITFLFGSTLLLAMHGATILA 225
PRK14505 PRK14505
bifunctional photosynthetic reaction center subunit L/M; Provisional
86-208 3.29e-04

bifunctional photosynthetic reaction center subunit L/M; Provisional


Pssm-ID: 172976  Cd Length: 643  Bit Score: 41.96  E-value: 3.29e-04
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  86 YNGGPYQLIVFHFLLGVAT------YMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTF 159
Cdd:PRK14505  114 FNIDPAKPGFFWFLTMVAAtiafigWLLRQIDISLKLDMGMEVPIAFGAVVSSWITLQWLRPIAMGAWGHGFPLGITHHL 193
                          90       100       110       120       130
                  ....*....|....*....|....*....|....*....|....*....|.
gi 2125674317 160 NFM--IVFQAeHNILMHPFHMAGVAGVFGGSLFSAMHGSLVTSSLIRETSE 208
Cdd:PRK14505  194 DWVsnIGYQY-YNFFYNPFHAIGITLLFASTLFLHMHGSAVLSEAKRNISD 243
Photo-RC_M cd09291
Subunit M of bacterial photosynthetic reaction center; Bacterial photosynthetic reaction ...
85-195 6.05e-03

Subunit M of bacterial photosynthetic reaction center; Bacterial photosynthetic reaction center (RC) complex, subunit M. The bacterial photosynthetic reaction center couples light-induced electron transfer with pumping protons across the membrane using reactions involving a quinone molecule (QB) that binds two electrons and two protons at the active site. The reaction center consists of three membrane-bound subunits, designated L, M, and H, plus an additional extracellular cytochrome subunit. The L and M subunits are arranged around an axis of 2-fold rotational symmetry perpendicular to the membrane, forming a scaffold that maintains the cofactors in a precise configuration. The L and M subunits have both sequence and structural similarity, suggesting a common evolutionary origin. The L and M subunits bind noncovalently to the nine cofactors in 2-fold symmetric branches: four bacteriochlorophylls (Bchl), two bacteriopheophytins (Bphe), two ubiquinone molecules (QA and QB), and a non-heme iron. Two Bchls on the periplasmic side of the membrane form the 'special pair' or dimer which is the primary electron donor for the photosynthetic reactions. The electron transfer reaction proceeds from the dimer to an intermediate acceptor (PA), a primary quinone (QA), and a secondary quinone (QB). Protons are translocated from the bacterial cytoplasm to the periplasmic space, generating an electrochemical gradient of protons (the protonmotive force) that can be used to power reactions such as ATP synthesis. The RC complex is found in photosynthetic bacteria, such as purple bacteria and other proteobacteria species.


Pssm-ID: 187749  Cd Length: 297  Bit Score: 37.79  E-value: 6.05e-03
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 2125674317  85 LYNGGPYQLIVFHFLLGVATYMGREWELSYRLGMRPWIFVAFSAPVAAASAVFLVYPIGQGSFSDGMPLGISGTFNFMIV 164
Cdd:cd09291    98 LNEGGWWLIAGFFLTLSILLWWIRTYTRAKALGMGTHLAWAFAAAIFLYLVIGFIRPVLMGSWSEAVPFGIFPHLDWTNA 177
                          90       100       110
                  ....*....|....*....|....*....|..
gi 2125674317 165 FQAEH-NILMHPFHMAGVAGVFGGSLFSAMHG 195
Cdd:cd09291   178 FSIRYgNFYYNPFHMLSIAFLYGSTLLFAMHG 209
 
Blast search parameters
Data Source: Precalculated data, version = cdd.v.3.21
Preset Options:Database: CDSEARCH/cdd   Low complexity filter: no  Composition Based Adjustment: yes   E-value threshold: 0.01

References:

  • Wang J et al. (2023), "The conserved domain database in 2023", Nucleic Acids Res.51(D)384-8.
  • Lu S et al. (2020), "The conserved domain database in 2020", Nucleic Acids Res.48(D)265-8.
  • Marchler-Bauer A et al. (2017), "CDD/SPARCLE: functional classification of proteins via subfamily domain architectures.", Nucleic Acids Res.45(D)200-3.
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