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Conserved domains on  [gi|440234270|gb|AGB97205|]
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PsbA, partial (chloroplast) [Vicia ferreirensis]

Protein Classification

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 ...
1-20 1.22e-04

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 PLN00056:

Pssm-ID: 447584  Cd Length: 353  Bit Score: 35.10  E-value: 1.22e-04
                         10        20
                 ....*....|....*....|
gi 440234270   1 RNAHNFPLDLAAVEAPSING 20
Cdd:PLN00056 334 RNAHNFPLDLAAVEAPSTNG 353
 
Name Accession Description Interval E-value
PLN00056 PLN00056
photosystem Q(B) protein; Provisional
1-20 1.22e-04

photosystem Q(B) protein; Provisional


Pssm-ID: 177687  Cd Length: 353  Bit Score: 35.10  E-value: 1.22e-04
                         10        20
                 ....*....|....*....|
gi 440234270   1 RNAHNFPLDLAAVEAPSING 20
Cdd:PLN00056 334 RNAHNFPLDLAAVEAPSTNG 353
 
Name Accession Description Interval E-value
PLN00056 PLN00056
photosystem Q(B) protein; Provisional
1-20 1.22e-04

photosystem Q(B) protein; Provisional


Pssm-ID: 177687  Cd Length: 353  Bit Score: 35.10  E-value: 1.22e-04
                         10        20
                 ....*....|....*....|
gi 440234270   1 RNAHNFPLDLAAVEAPSING 20
Cdd:PLN00056 334 RNAHNFPLDLAAVEAPSTNG 353
 
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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