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1jb0
From Proteopedia
Crystal Structure of Photosystem I: a Photosynthetic Reaction Center and Core Antenna System from Cyanobacteria
Life on Earth depends on photosynthesis, the conversion of light energy from the Sun to chemical energy. In plants, green algae and cyanobacteria, this process is driven by the cooperation of two large protein-cofactor complexes, photosystems I and II, which are located in the thylakoid photosynthetic membranes. The crystal structure of photosystem I from the thermophilic cyanobacterium Synechococcus elongatus described here provides a picture at atomic detail of 12 protein subunits and 127 cofactors comprising 96 chlorophylls, 2 phylloquinones, 3 Fe4S4 clusters, 22 carotenoids, 4 lipids, a putative Ca2+ ion and 201 water molecules. The structural information on the proteins and cofactors and their interactions provides a basis for understanding how the high efficiency of photosystem I in light capturing and electron transfer is achieved.
Three-dimensional structure of cyanobacterial photosystem I at 2.5 A resolution., Jordan P, Fromme P, Witt HT, Klukas O, Saenger W, Krauss N, Nature. 2001 Jun 21;411(6840):909-17. PMID:11418848
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
About this Structure
1JB0 is a 12 chains structure with sequences from Synechococcus elongatus. The October 2001 RCSB PDB Molecule of the Month feature on Photosystem I by David S. Goodsell is 10.2210/rcsb_pdb/mom_2001_10. The June 2005 RCSB PDB Molecule of the Month feature on Carotenoid Oxygenase by David S. Goodsell is 10.2210/rcsb_pdb/mom_2005_6. Full crystallographic information is available from OCA.
Reference
- Jordan P, Fromme P, Witt HT, Klukas O, Saenger W, Krauss N. Three-dimensional structure of cyanobacterial photosystem I at 2.5 A resolution. Nature. 2001 Jun 21;411(6840):909-17. PMID:11418848 doi:10.1038/35082000
Page seeded by OCA on Wed Jan 20 22:31:26 2010
