1JB0: Crystal Structure of Photosystem I: a Photosynthetic Reaction Center and Core Antenna System from Cyanobacteria

Citation:
Abstract
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.
PDB ID: 1JB0Download
MMDB ID: 16884
PDB Deposition Date: 2001/6/1
Updated in MMDB: 2007/10
Experimental Method:
x-ray diffraction
Resolution: 2.5  Å
Source Organism:
Similar Structures:
Biological Unit for 1JB0: 36-meric; determined by author
Molecular Components in 1JB0
Label Count Molecule
Proteins (36 molecules)
3
Photosystem I P700 Chlorophyll a Apoprotein A1
Molecule annotation
3
Photosystem I P700 Chlorophyll a Apoprotein A2
Molecule annotation
3
Photosystem I Iron-sulfur Center
Molecule annotation
3
Photosystem 1 Reaction Centre Subunit II
Molecule annotation
3
Photosystem 1 Reaction Centre Subunit IV
Molecule annotation
3
Photosystem 1 Reaction Centre Subunit III
Molecule annotation
3
Photosystem 1 Reaction Centre Subunit Viii
Molecule annotation
3
Photosystem 1 Reaction Centre Subunit IX
Molecule annotation
3
Photosystem 1 Reaction Centre Subunit X
Molecule annotation
3
Photosystem 1 Reaction Centre Subunit XI
Molecule annotation
3
Photosystem 1 Reaction Centre Subunit XII
Molecule annotation
3
Photosystem I Subunit Psax
Molecule annotation
Chemicals (384 molecules)
1
288
2
6
3
9
4
66
5
9
6
3
7
3
* Click molecule labels to explore molecular sequence information.

Citing MMDB
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