Protein: Photosystem I subunit O (PSI-O) (Q949Q5)
Organism: Arabidopsis thaliana (Mouse-ear cress)
Function: Involved in the balancing of excitation energy between the two photosystems I (PSI) and II (PSII).
Subcellular location: Plastid, chloroplast thylakoid membrane {ECO:0000269|PubMed:11801243}; Multi-pass membrane protein {ECO:0000269|PubMed:11801243}. Note=Prevalent in stroma lamellae with low amounts in grana.
Sequence: MAATFATPSTVIGLGGSSITTKPFSSSFLKPTLSAKNPLRLAGASGGRVTCFERNWLRRDLNVVGFGLIGWLAPSSIPAINGKSLTGLFFDSIGTELAHFPTPPALTSQFWLWLVTWHLGLFLCLTFGQIGFKGRTEDYF
InterPro domains: - IPR017498: Photosystem I PsaO (family) [1-140]
Interaction partners: - Photosystem I reaction center subunit V, chloroplastic
- Photosystem I reaction center subunit III, chloroplastic
- Photosystem I reaction center subunit psaK, chloroplastic
- Photosystem I reaction center subunit XI, chloroplastic
- Photosystem I chlorophyll a/b-binding protein 3-1, chloroplastic
- Photosystem I reaction center subunit VI-2, chloroplastic
- Photosystem I reaction center subunit VI-1, chloroplastic
- Photosystem I reaction center subunit IV A, chloroplastic
- Chlorophyll a-b binding protein 6, chloroplastic
- Photosystem I reaction center subunit II-1, chloroplastic
Gene Ontology annotations:
Molecular Function (MF): GO:0003674 (molecular function), GO:0005488 (binding), GO:0005515 (protein binding)
Biological Process (BP): GO:0008150 (biological process), GO:0065007 (biological regulation), GO:0050896 (response to stimulus), GO:0050789 (regulation of biological process), GO:0048519 (negative regulation of biological process), GO:0009628 (response to abiotic stimulus), GO:0019222 (regulation of metabolic process), GO:0050794 (regulation of cellular process), GO:0048523 (negative regulation of cellular process), GO:0009892 (negative regulation of metabolic process), GO:0009266 (response to temperature stimulus), GO:0051172 (negative regulation of nitrogen compound metabolic process), GO:0009314 (response to radiation), GO:0010605 (negative regulation of macromolecule metabolic process), GO:0009889 (regulation of biosynthetic process), GO:0051171 (regulation of nitrogen compound metabolic process), GO:0060255 (regulation of macromolecule metabolic process), GO:0031323 (regulation of cellular metabolic process), GO:0009890 (negative regulation of biosynthetic process), GO:0080090 (regulation of primary metabolic process), GO:0031324 (negative regulation of cellular metabolic process), GO:0009416 (response to light stimulus), GO:0010556 (regulation of macromolecule biosynthetic process), GO:0031326 (regulation of cellular biosynthetic process), GO:0019219 (regulation of nucleobase-containing compound metabolic process), GO:0010558 (negative regulation of macromolecule biosynthetic process), GO:0031327 (negative regulation of cellular biosynthetic process), GO:0051252 (regulation of RNA metabolic process), GO:0051253 (negative regulation of RNA metabolic process), GO:0045934 (negative regulation of nucleobase-containing compound metabolic process), GO:0010468 (regulation of gene expression), GO:2001141 (regulation of RNA biosynthetic process), GO:1902679 (negative regulation of RNA biosynthetic process), GO:0006355 (regulation of DNA-templated transcription), GO:1903507 (negative regulation of nucleic acid-templated transcription), GO:1903506 (regulation of nucleic acid-templated transcription), GO:0045892 (negative regulation of DNA-templated transcription)
Cellular Component (CC): GO:0005575 (cellular component), GO:0110165 (cellular anatomical entity), GO:0005622 (intracellular anatomical structure), GO:0043226 (organelle), GO:0016020 (membrane), GO:0031975 (envelope), GO:0005737 (cytoplasm), GO:0031090 (organelle membrane), GO:0031967 (organelle envelope), GO:0034357 (photosynthetic membrane), GO:0043229 (intracellular organelle), GO:0019867 (outer membrane), GO:0009536 (plastid), GO:0043228 (non-membrane-bounded organelle), GO:0043227 (membrane-bounded organelle), GO:0009507 (chloroplast), GO:0042651 (thylakoid membrane), GO:0043231 (intracellular membrane-bounded organelle), GO:0031976 (plastid thylakoid), GO:0098588 (bounding membrane of organelle), GO:0043232 (intracellular non-membrane-bounded organelle), GO:0009526 (plastid envelope), GO:0042170 (plastid membrane), GO:0031968 (organelle outer membrane), GO:0009941 (chloroplast envelope), GO:0009579 (thylakoid), GO:0055035 (plastid thylakoid membrane), GO:0009535 (chloroplast thylakoid membrane), GO:0009534 (chloroplast thylakoid)