Protein Domain : IPR000549

Type:  Family Name:  Photosystem I PsaG/PsaK protein
Description:  Oxygenic photosynthesis uses two multi-subunit photosystems (I and II) located in the cell membranes of cyanobacteria and in the thylakoid membranes of chloroplasts in plants and algae. Photosystem II (PSII) has a P680 reaction centre containing chlorophyll 'a' that uses light energy to carry out the oxidation (splitting) of water molecules, and to produce ATP via a proton pump. Photosystem I (PSI) has a P700 reaction centre containing chlorophyll that takes the electron and associated hydrogen donated from PSII to reduce NADP+ to NADPH. Both ATP and NADPH are subsequently used in the light-independent reactions to convert carbon dioxide to glucose using the hydrogen atom extracted from water by PSII, releasing oxygen as a by-product.Photosystem I (PSI) [] is an integral membrane protein complex that uses light energy to mediate electron transfer from plastocyanin to ferredoxin. It is found in the chloroplasts of plants and cyanobacteria. PSI is composed of at least 14 different subunits, two of which, PSI-G (gene psaG) and PSI-K (gene psaK), are small hydrophobic proteins of about 7 to 9 Kd and evolutionary related []. Both seem to contain two transmembrane regions. Cyanobacteria contain only PSI-K. Short Name:  PSI_PsaG/PsaK

2 Child Features

DB identifier Type Name
IPR016370 Family Photosystem I PsaG/PsaK, plant
IPR017492 Family Photosystem I PsaK, reaction centre

0 Contains

3 Cross Referencess

Identifier
PF01241
PS01026
SSF81563

0 Found In

3 GO Annotations

GO Term Gene Name
GO:0015979 IPR000549
GO:0009522 IPR000549
GO:0016020 IPR000549

3 Ontology Annotations

GO Term Gene Name
GO:0015979 IPR000549
GO:0009522 IPR000549
GO:0016020 IPR000549

0 Parent Features

755 Proteins

DB identifier UniProt Accession Secondary Identifier Organism Name Length
29306 D8QXL1 PAC:15409979 Selaginella moellendorffii 78  
27993 D8R141 PAC:15408868 Selaginella moellendorffii 115  
evm.model.supercontig_12.69 PAC:16406910 Carica papaya 158  
evm.model.supercontig_17.68 PAC:16410792 Carica papaya 129  
29932.m000601 B9SKT8 PAC:16814086 Ricinus communis 129  
28657.m000392 B9T0J8 PAC:16801449 Ricinus communis 160  
Cucsa.042230.1 A0A0A0L4W3 PAC:16952896 Cucumis sativus 158  
Cucsa.048130.1 A0A0A0KM49 PAC:16953798 Cucumis sativus 131  
orange1.1g033067m A0A067GIU0 PAC:18114176 Citrus sinensis 128  
orange1.1g031508m A0A067GF15 PAC:18126061 Citrus sinensis 158  
AT1G30380.1 Q9SUI5 PAC:19654676 Arabidopsis thaliana 130  
AT1G55670.1 Q9S7N7 PAC:19658203 Arabidopsis thaliana 160  
Thhalv10009090m V4L252 PAC:20187518 Eutrema salsugineum 131  
Thhalv10009089m V4L252 PAC:20187519 Eutrema salsugineum 131  
Thhalv10011835m V4KFE4 PAC:20184209 Eutrema salsugineum 162  
Ciclev10009769m V4WH36 PAC:20794850 Citrus clementina 158  
Ciclev10017170m V4W7P0 PAC:20816768 Citrus clementina 128  
Lus10041966 PAC:23153855 Linum usitatissimum 142  
Lus10017476 PAC:23163110 Linum usitatissimum 142  
Lus10012086 PAC:23146016 Linum usitatissimum 129  
Lus10028806 PAC:23177203 Linum usitatissimum 143  
Lus10017974 PAC:23147898 Linum usitatissimum 143  
Lus10007399 PAC:23175818 Linum usitatissimum 128  
Potri.011G168700.1 A9PEV3 PAC:27002992 Populus trichocarpa 159  
Potri.001G471900.1 A9PHN7 PAC:27047250 Populus trichocarpa 159  
Potri.018G027600.2 A0A2K1WUY5 PAC:27010512 Populus trichocarpa 130  
Potri.018G027600.1 PAC:27010511 Populus trichocarpa 135  
Potri.006G254200.1 B9HA54 PAC:27008339 Populus trichocarpa 130  
Gorai.013G148000.1 A0A0D2SEF6 PAC:26790021 Gossypium raimondii 158  
Gorai.009G454900.1 A0A0D2V2L0 PAC:26762883 Gossypium raimondii 160  

2 Publications

First Author Title Year Journal Volume Pages PubMed ID
            3333014
            8360180