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UniProt functional annotation for Q8DHJ2 | ||
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| UniProt code: Q8DHJ2. |
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| Organism: | |
Thermosynechococcus elongatus (strain BP-1). |
| Taxonomy: | |
Bacteria; Cyanobacteria; Synechococcales; Synechococcaceae; Thermosynechococcus. |
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| Function: | |
Controls the interaction of photosystem II (PSII) cores with the light-harvesting antenna. May also aid in binding of PsbK, Ycf12 and the oxygen-evolving complex to PSII, at least in vitro. PSII is a light-driven water plastoquinone oxidoreductase, using light energy to abstract electrons from H(2)O, generating a proton gradient subsequently used for ATP formation. {ECO:0000255|HAMAP-Rule:MF_00644, ECO:0000269|PubMed:17967798, ECO:0000269|PubMed:20558739, ECO:0000269|PubMed:21367867, ECO:0000269|PubMed:25006873}. |
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| Cofactor: | |
Note=PSII binds multiple chlorophylls, carotenoids and specific lipids. {ECO:0000269|PubMed:14764885, ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:17935689, ECO:0000269|PubMed:17967798, ECO:0000269|PubMed:19219048, ECO:0000269|PubMed:20558739, ECO:0000269|PubMed:21367867, ECO:0000269|PubMed:22665786, ECO:0000269|PubMed:23413188, ECO:0000269|PubMed:25006873, ECO:0000269|PubMed:25043005}; |
| Subunit: | |
Cyanobacterial PSII is composed of 1 copy each of membrane proteins PsbA, PsbB, PsbC, PsbD, PsbE, PsbF, PsbH, PsbI, PsbJ, PsbK, PsbL, PsbM, PsbT, PsbX, PsbY, PsbZ, Ycf12, 3 peripheral proteins PsbO, PsbU, PsbV and a large number of cofactors. It forms dimeric complexes. {ECO:0000269|PubMed:14764885, ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:17935689, ECO:0000269|PubMed:17967798, ECO:0000269|PubMed:19219048, ECO:0000269|PubMed:20558739, ECO:0000269|PubMed:21367867, ECO:0000269|PubMed:22665786, ECO:0000269|PubMed:23413188, ECO:0000269|PubMed:25006873, ECO:0000269|PubMed:25043005}. |
| Subcellular location: | |
Cellular thylakoid membrane {ECO:0000255|HAMAP- Rule:MF_00644, ECO:0000269|PubMed:14764885, ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:17935689, ECO:0000269|PubMed:17967798, ECO:0000269|PubMed:19219048, ECO:0000269|PubMed:20558739, ECO:0000269|PubMed:21367867, ECO:0000269|PubMed:22665786, ECO:0000269|PubMed:23413188, ECO:0000269|PubMed:25006873, ECO:0000269|PubMed:25043005}; Multi-pass membrane protein {ECO:0000255|HAMAP-Rule:MF_00644, ECO:0000269|PubMed:14764885, ECO:0000269|PubMed:16355230, ECO:0000269|PubMed:17935689, ECO:0000269|PubMed:17967798, ECO:0000269|PubMed:19219048, ECO:0000269|PubMed:20558739, ECO:0000269|PubMed:21367867, ECO:0000269|PubMed:22665786, ECO:0000269|PubMed:23413188, ECO:0000269|PubMed:25006873, ECO:0000269|PubMed:25043005}. Note=Associated with the photosystem II complex. |
| Mass spectrometry: | |
Mass=6798; Mass_error=5; Method=MALDI; Evidence={ECO:0000269|PubMed:19219048}; |
| Mass spectrometry: | |
Mass=6793; Method=MALDI; Evidence={ECO:0000269|PubMed:20558739}; |
| Disruption phenotype: | |
Cells grow normally under all light regimes tested; it is dispensable for photoautotrophic growth. The deletion strain is more tolerant to photoinhibition, while isolated PSII complex contains less PsbK and Ycf12 than wild-type and also has reduced oxygen-evolving capacity. {ECO:0000269|PubMed:17967798}. |
| Similarity: | |
Belongs to the PsbZ family. {ECO:0000255|HAMAP- Rule:MF_00644}. |
Annotations taken from UniProtKB at the EBI.