Structural highlights
6nwa is a 51 chain structure with sequence from Synechocystis sp. pcc 6803. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
|
| Ligands: | , , , , , , , , |
| Activity: | Photosystem I, with EC number 1.97.1.12 |
| Resources: | FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT |
Function
[ISIA_SYNY3] Functions as an antenna for photosystem I (PSI) under iron-limiting conditions, when phycobilisomes disappear. In the (PSI)3(Isi3)18 complex most of the harvested energy is probably used by PSI; in other PSI-containing supercomplexes a large part of the energy will probably not be used for light harvesting, but rather is dissipated to protect the organism from light damage.[1] [2] [PSAE_SYNY3] Stabilizes the interaction between PsaC and the PSI core, assists the docking of the ferredoxin to PSI and interacts with ferredoxin-NADP oxidoreductase.[HAMAP-Rule:MF_00613]
References
- ↑ Bibby TS, Nield J, Barber J. Iron deficiency induces the formation of an antenna ring around trimeric photosystem I in cyanobacteria. Nature. 2001 Aug 16;412(6848):743-5. PMID:11507643 doi:http://dx.doi.org/10.1038/35089098
- ↑ Ihalainen JA, D'Haene S, Yeremenko N, van Roon H, Arteni AA, Boekema EJ, van Grondelle R, Matthijs HC, Dekker JP. Aggregates of the chlorophyll-binding protein IsiA (CP43') dissipate energy in cyanobacteria. Biochemistry. 2005 Aug 16;44(32):10846-53. PMID:16086587 doi:http://dx.doi.org/10.1021/bi0510680
