Protein Domain : IPR001280

Type:  Family Name:  Photosystem I PsaA/PsaB
Description:  Photosystem I (PSI) [] is an integral membrane protein complex that uses light energy to mediate electron transfer from plastocyanin to ferredoxin. PSI is found in the chloroplast of plants and cyanobacteria. The electron transfer components of the reaction centre of PSI are a primary electron donor P-700 (chlorophyll dimer) and five electron acceptors: A0 (chlorophyll), A1 (a phylloquinone) and three 4Fe-4S iron-sulphur centres: Fx, Fa, and Fb.PsaA and psaB, two closely related proteins, are involved in the binding of P700, A0, A1, and Fx. psaA and psaB are both integral membrane proteins of 730 to 750 amino acids that seem to contain 11 transmembrane segments. The Fx 4Fe-4S iron-sulphur centre is bound by four cysteines; two of these cysteines are provided by the psaA protein and the two others by psaB. The two cysteines in both proteins are proximal and located in a loop between the ninth and tenth transmembrane segments. A leucine zipper motif seems to be present [] downstream of the cysteines and could contribute to dimerisation of psaA/psaB. Short Name:  PSI_PsaA/B
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2 Child Features

DB identifier Type Name
IPR006244 Family Photosystem I PsaB
IPR006243 Family Photosystem I PsaA

1 Contains

DB identifier Type Name
IPR020586 Conserved_site Photosystem I PsaA/PsaB, conserved site

5 Cross Referencess

Identifier
PF00223
PIRSF002905
PR00257
G3DSA:1.20.1130.10
SSF81558

0 Found In

4 GO Annotations

GO Term Gene Name
GO:0015979 IPR001280
GO:0009522 IPR001280
GO:0009579 IPR001280
GO:0016021 IPR001280

4 Ontology Annotations

GO Term Gene Name
GO:0015979 IPR001280
GO:0009522 IPR001280
GO:0009579 IPR001280
GO:0016021 IPR001280

0 Parent Features

3256 Proteins

DB identifier UniProt Accession Secondary Identifier Organism Name Length
137750 D8TE61 PAC:15422228 Selaginella moellendorffii 736  
236842 D8TE62 PAC:15412127 Selaginella moellendorffii 734  
270578 D8R6G6 PAC:15421063 Selaginella moellendorffii 300  
evm.model.supercontig_38.42 PAC:16418878 Carica papaya 117  
evm.model.supercontig_768.2 PAC:16426050 Carica papaya 118  
29745.m000371 B9SUD1 PAC:16807704 Ricinus communis 584  
29852.m001990 B9RL07 PAC:16811552 Ricinus communis 349  
29852.m001991 B9RL08 PAC:16811553 Ricinus communis 178  
29852.m001992 B9RL09 PAC:16811554 Ricinus communis 112  
29852.m001993 B9RL10 PAC:16811555 Ricinus communis 292  
30209.m001514 B9RX98 PAC:16824058 Ricinus communis 335  
45070.m000007 B9TBK0 PAC:16827769 Ricinus communis 207  
55843.m000006 B9TI65 PAC:16828874 Ricinus communis 314  
Cucsa.384310.1 PAC:16982455 Cucumis sativus 154  
orange1.1g012922m A0A067GSL0 PAC:18113026 Citrus sinensis 453  
AT5G11000.1 Q9LEU1 PAC:19670916 Arabidopsis thaliana 389  
ATCG00680.1 P56777 PAC:19637991 Arabidopsis thaliana 508  
ATCG00340.1 P56767 PAC:19637953 Arabidopsis thaliana 734  
ATCG00350.1 P56766 PAC:19637978 Arabidopsis thaliana 750  
Thhalv10022971m V4M7E7 PAC:20202094 Eutrema salsugineum 298  
Thhalv10011033m V4NI87 PAC:20207341 Eutrema salsugineum 852  
Thhalv10015286m V4LF95 PAC:20205445 Eutrema salsugineum 387  
Ciclev10004112m V4VZ44 PAC:20799298 Citrus clementina 130  
Ciclev10003146m V4T2Y2 PAC:20788827 Citrus clementina 166  
Ciclev10030467m V4T4T8 PAC:20799285 Citrus clementina 214  
Potri.009G016300.1 A0A2K1Z180 PAC:26986009 Populus trichocarpa 264  
Potri.T007600.1 A0A2K1RA47 PAC:26983135 Populus trichocarpa 283  
Potri.016G089700.1 A0A2K1XD07 PAC:27012405 Populus trichocarpa 378  
Potri.017G052700.1 A0A2K1X3K1 PAC:26985560 Populus trichocarpa 276  
Potri.002G040000.1 A0A2K2BD50 PAC:27020457 Populus trichocarpa 90  

2 Publications

First Author Title Year Journal Volume Pages PubMed ID
            3333014
            2186925