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IPR023618 is a Photosystem I PsaG/PsaK domain, chloroplastic.
<p>Photosystem I (PSI) [[cite:PUB00000583]] 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 are small hydrophobic proteins of about 7 to 9 Kd and evolutionary related, PsaG (also known as PSI-G) and PsaK (also known as PSI-K), both integral membrane proteins. Cyanobacteria contain only PsaK [[cite:PUB00002802]]. While cyanobacterial PSI have phycobilisomes to harvest light, eukaryotic PSI have a membrane-imbedded peripheral antenna [[cite:PUB00100153]].</p> <p>The domain represented by this entry consists of an α orthogonal bundle and it is found in photosystem I subunits PsaG and PsaK from chloroplasts.</p>
This description is obtained from EB-eye REST.
GO predictions are based solely on the InterPro-to-GO mappings published by EMBL-EBI, which are in turn based on the mapping of predicted domains to the InterPro dataset. The InterPro-to-GO mapping was last updated on , while the GO metadata was last updated on .
| GO term | Namespace | Name | Definition | Relationships |
|---|---|---|---|---|
| Cellular component | Photosystem I | A photosystem that contains an iron-sulfur reaction center associated with accessory pigments and electron carriers. In cyanobacteria and chloroplasts, photosystem I functions as a light-dependent plastocyanin-ferredoxin oxidoreductase, transferring electrons from plastocyanin to ferredoxin; in photosynthetic bacteria that have only a single type I photosystem, such as the green sulfur bacteria, electrons can go either to ferredoxin (Fd) -> NAD+ or to menaquinone (MK) -> Cytb/FeS -> Cytc555 -> photosystem I (cyclic photophosphorylation). | ||
| Biological process | Photosynthesis | The synthesis by organisms of organic chemical compounds, especially carbohydrates, from carbon dioxide (CO2) using energy obtained from light rather than from the oxidation of chemical compounds. |
| Transcript | Name | Description | Predicted domains | Domain count |
|---|---|---|---|---|
| – | Photosystem I subunit X precursor [Retama raetam] gi|16930767|gb|AAL32043.1|AF439284_1 | 9 | ||
| – | Photosystem I subunit K [Theobroma cacao] gi|508705053|gb|EOX96949.1| | 7 | ||
| – | PREDICTED: photosystem I reaction center subunit V, chloroplastic-like [Cicer arietinum] gi|502127398|ref|XP_004499692.1| | 15 | ||
| – | Photosystem I subunit K [Theobroma cacao] gi|508705053|gb|EOX96949.1| | 7 | ||
| – | Photosystem I reaction center subunit psaK; TAIR: AT1G30380.1 photosystem I subunit K; Swiss-Prot: sp|Q9SUI5|PSAK_ARATH Photosystem I reaction center subunit psaK, chloroplastic; TrEMBL-Plants: tr|I3SM84|I3SM84_LOTJA Uncharacterized protein; Found in the gene: LotjaGi1g1v0227100 | 13 | ||
| – | Photosystem I reaction center subunit V; TAIR: AT1G55670.1 photosystem I subunit G; Swiss-Prot: sp|Q9S7N7|PSAG_ARATH Photosystem I reaction center subunit V, chloroplastic; TrEMBL-Plants: tr|I3S5Z3|I3S5Z3_LOTJA Uncharacterized protein; Found in the gene: LotjaGi3g1v0331900 | 15 | ||
| – | Photosystem I reaction center subunit psaK; TAIR: AT1G30380.1 photosystem I subunit K; Swiss-Prot: sp|Q9SUI5|PSAK_ARATH Photosystem I reaction center subunit psaK, chloroplastic; TrEMBL-Plants: tr|I3SM84|I3SM84_LOTJA Uncharacterized protein; Found in the gene: LotjaGi4g1v0058400 | 7 |
A list of co-occurring predicted domains within the L. japonicus gene space:
| Predicted domain | Source | Observations | Saturation (%) |
|---|---|---|---|
| TRANSMEMBRANE | Phobius | 1 | 14.29 |