NCBI Home Page NCBI Site Search page NCBI Guide that lists and describes the NCBI resources
Conserved domains on  [gi|21389509|ref|NP_653323|]
View 

sperm flagellar protein 2 isoform 2 [Homo sapiens]

Protein Classification

calponin homology domain-containing protein( domain architecture ID 10533622)

calponin homology (CH) domain-containing protein may bind actin filament (F-actin) or serve a regulatory function

CATH:  1.10.418.10
Gene Ontology:  GO:0008017
PubMed:  12186940|11911887

Graphical summary

 Zoom to residue level

show extra options »

Show site features     Horizontal zoom: ×

List of domain hits

Name Accession Description Interval E-value
CH_2 pfam06294
CH-like domain in sperm protein; Spef is a region of sperm flagellar proteins. It probably ...
5-97 3.49e-24

CH-like domain in sperm protein; Spef is a region of sperm flagellar proteins. It probably exerts a role in spermatogenesis in that the protein is expressed predominantly in adult tissue. It is present in the tails of developing and epididymal sperm internal to the fibrous sheath and around the dense outer fibres of the sperm flagellum. The amino-terminal domain (residues 1-110) shows a possible calponin homology (CH) domain; however Spef does not bind actin directly under in vitro conditions, so the function of the amino-terminal calponin-like domain is unclear. Transcription aberrations leading to a truncated protein result in immotile sperm.


:

Pssm-ID: 461871  Cd Length: 91  Bit Score: 96.35  E-value: 3.49e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509     5 LCQWLNkELKVSRTVspKSFAKAFSSGYLLGEVLHKFELQD-DFSEFLDSRVSSAKLNNFSRLEPTLNLLGVQFDQNVAH 83
Cdd:pfam06294   1 LLKWLQ-SLDLSRPV--RNIARDFSDGFLVAEILSRYYPKLvDLHNYSPGSSVAAKLNNWETLEKVLKKLGIKLSKEDIE 77
                          90
                  ....*....|....
gi 21389509    84 GIITEKPGVATKLL 97
Cdd:pfam06294  78 DLANGKPGAAERLL 91
Smc super family cl34174
Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning]; ...
176-447 8.46e-05

Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning];


The actual alignment was detected with superfamily member COG1196:

Pssm-ID: 440809 [Multi-domain]  Cd Length: 983  Bit Score: 45.31  E-value: 8.46e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 176 EKLERFQKLKEEQRCFDIEKQYLNRRRQNEIMAKIQAAIIQIpkpasNRTLKALEAQkMMKKKKEAEDVADEIKKFEALI 255
Cdd:COG1196 210 EKAERYRELKEELKELEAELLLLKLRELEAELEELEAELEEL-----EAELEELEAE-LAELEAELEELRLELEELELEL 283
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 256 kKDLQAKESASKTSLDTAGQTTTDLLNTYSD-DEYIKKIQKRLEEDAFAREQREKRRRKLLMDQLIAHEAQEEAYREEQL 334
Cdd:COG1196 284 -EEAQAEEYELLAELARLEQDIARLEERRRElEERLEELEEELAELEEELEELEEELEELEEELEEAEEELEEAEAELAE 362
                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 335 INRLMRQSQQERRIAVQLMHVRHEKEVLWQNRIFREKQHEERRLKDFQDALDREAALAKQAK-IDFEEQFLKEKRFHDQI 413
Cdd:COG1196 363 AEEALLEAEAELAEAEEELEELAEELLEALRAAAELAAQLEELEEAEEALLERLERLEEELEeLEEALAELEEEEEEEEE 442
                       250       260       270
                ....*....|....*....|....*....|....
gi 21389509 414 AVERAQARYEKHYSVCAEILDQIVDLSTKVADYR 447
Cdd:COG1196 443 ALEEAAEEEAELEEEEEALLELLAELLEEAALLE 476
 
Name Accession Description Interval E-value
CH_2 pfam06294
CH-like domain in sperm protein; Spef is a region of sperm flagellar proteins. It probably ...
5-97 3.49e-24

CH-like domain in sperm protein; Spef is a region of sperm flagellar proteins. It probably exerts a role in spermatogenesis in that the protein is expressed predominantly in adult tissue. It is present in the tails of developing and epididymal sperm internal to the fibrous sheath and around the dense outer fibres of the sperm flagellum. The amino-terminal domain (residues 1-110) shows a possible calponin homology (CH) domain; however Spef does not bind actin directly under in vitro conditions, so the function of the amino-terminal calponin-like domain is unclear. Transcription aberrations leading to a truncated protein result in immotile sperm.


Pssm-ID: 461871  Cd Length: 91  Bit Score: 96.35  E-value: 3.49e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509     5 LCQWLNkELKVSRTVspKSFAKAFSSGYLLGEVLHKFELQD-DFSEFLDSRVSSAKLNNFSRLEPTLNLLGVQFDQNVAH 83
Cdd:pfam06294   1 LLKWLQ-SLDLSRPV--RNIARDFSDGFLVAEILSRYYPKLvDLHNYSPGSSVAAKLNNWETLEKVLKKLGIKLSKEDIE 77
                          90
                  ....*....|....
gi 21389509    84 GIITEKPGVATKLL 97
Cdd:pfam06294  78 DLANGKPGAAERLL 91
Smc COG1196
Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning]; ...
176-447 8.46e-05

Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 440809 [Multi-domain]  Cd Length: 983  Bit Score: 45.31  E-value: 8.46e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 176 EKLERFQKLKEEQRCFDIEKQYLNRRRQNEIMAKIQAAIIQIpkpasNRTLKALEAQkMMKKKKEAEDVADEIKKFEALI 255
Cdd:COG1196 210 EKAERYRELKEELKELEAELLLLKLRELEAELEELEAELEEL-----EAELEELEAE-LAELEAELEELRLELEELELEL 283
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 256 kKDLQAKESASKTSLDTAGQTTTDLLNTYSD-DEYIKKIQKRLEEDAFAREQREKRRRKLLMDQLIAHEAQEEAYREEQL 334
Cdd:COG1196 284 -EEAQAEEYELLAELARLEQDIARLEERRRElEERLEELEEELAELEEELEELEEELEELEEELEEAEEELEEAEAELAE 362
                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 335 INRLMRQSQQERRIAVQLMHVRHEKEVLWQNRIFREKQHEERRLKDFQDALDREAALAKQAK-IDFEEQFLKEKRFHDQI 413
Cdd:COG1196 363 AEEALLEAEAELAEAEEELEELAEELLEALRAAAELAAQLEELEEAEEALLERLERLEEELEeLEEALAELEEEEEEEEE 442
                       250       260       270
                ....*....|....*....|....*....|....
gi 21389509 414 AVERAQARYEKHYSVCAEILDQIVDLSTKVADYR 447
Cdd:COG1196 443 ALEEAAEEEAELEEEEEALLELLAELLEEAALLE 476
 
Name Accession Description Interval E-value
CH_2 pfam06294
CH-like domain in sperm protein; Spef is a region of sperm flagellar proteins. It probably ...
5-97 3.49e-24

CH-like domain in sperm protein; Spef is a region of sperm flagellar proteins. It probably exerts a role in spermatogenesis in that the protein is expressed predominantly in adult tissue. It is present in the tails of developing and epididymal sperm internal to the fibrous sheath and around the dense outer fibres of the sperm flagellum. The amino-terminal domain (residues 1-110) shows a possible calponin homology (CH) domain; however Spef does not bind actin directly under in vitro conditions, so the function of the amino-terminal calponin-like domain is unclear. Transcription aberrations leading to a truncated protein result in immotile sperm.


Pssm-ID: 461871  Cd Length: 91  Bit Score: 96.35  E-value: 3.49e-24
                          10        20        30        40        50        60        70        80
                  ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509     5 LCQWLNkELKVSRTVspKSFAKAFSSGYLLGEVLHKFELQD-DFSEFLDSRVSSAKLNNFSRLEPTLNLLGVQFDQNVAH 83
Cdd:pfam06294   1 LLKWLQ-SLDLSRPV--RNIARDFSDGFLVAEILSRYYPKLvDLHNYSPGSSVAAKLNNWETLEKVLKKLGIKLSKEDIE 77
                          90
                  ....*....|....
gi 21389509    84 GIITEKPGVATKLL 97
Cdd:pfam06294  78 DLANGKPGAAERLL 91
Smc COG1196
Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning]; ...
176-447 8.46e-05

Chromosome segregation ATPase Smc [Cell cycle control, cell division, chromosome partitioning];


Pssm-ID: 440809 [Multi-domain]  Cd Length: 983  Bit Score: 45.31  E-value: 8.46e-05
                        10        20        30        40        50        60        70        80
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 176 EKLERFQKLKEEQRCFDIEKQYLNRRRQNEIMAKIQAAIIQIpkpasNRTLKALEAQkMMKKKKEAEDVADEIKKFEALI 255
Cdd:COG1196 210 EKAERYRELKEELKELEAELLLLKLRELEAELEELEAELEEL-----EAELEELEAE-LAELEAELEELRLELEELELEL 283
                        90       100       110       120       130       140       150       160
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 256 kKDLQAKESASKTSLDTAGQTTTDLLNTYSD-DEYIKKIQKRLEEDAFAREQREKRRRKLLMDQLIAHEAQEEAYREEQL 334
Cdd:COG1196 284 -EEAQAEEYELLAELARLEQDIARLEERRRElEERLEELEEELAELEEELEELEEELEELEEELEEAEEELEEAEAELAE 362
                       170       180       190       200       210       220       230       240
                ....*....|....*....|....*....|....*....|....*....|....*....|....*....|....*....|
gi 21389509 335 INRLMRQSQQERRIAVQLMHVRHEKEVLWQNRIFREKQHEERRLKDFQDALDREAALAKQAK-IDFEEQFLKEKRFHDQI 413
Cdd:COG1196 363 AEEALLEAEAELAEAEEELEELAEELLEALRAAAELAAQLEELEEAEEALLERLERLEEELEeLEEALAELEEEEEEEEE 442
                       250       260       270
                ....*....|....*....|....*....|....
gi 21389509 414 AVERAQARYEKHYSVCAEILDQIVDLSTKVADYR 447
Cdd:COG1196 443 ALEEAAEEEAELEEEEEALLELLAELLEEAALLE 476
 
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.
Help | Disclaimer | Write to the Help Desk
NCBI | NLM | NIH