› 4k7b

X-ray diffraction
1.55Å resolution

Crystal structure of Extrinsic protein in photosystem II

Released:
DOI: 10.2210/pdb4k7b/pdb
PDB entry 4k7b coloured by chain, front view.
PDB entry 4k7b coloured by chain, side view.
PDB entry 4k7b coloured by chain, top view.
Source organism: Chaetoceros gracilis
Primary publication:
Crystal structure of Psb31, a novel extrinsic protein of photosystem II from a marine centric diatom and implications for its binding and function.
Nagao R, Suga M, Niikura A, Okumura A, Koua FH, Suzuki T, Tomo T, Enami I, Shen JR
Biochemistry 52 6646-52 (2013)
PMID: 23988112

Function and Biology Details

Biochemical function:
  • not assigned
Biological process:
  • not assigned
Cellular component:
  • not assigned
Sequence domain:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-110441 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Photosystem II Psb31 protein domain-containing protein Chain: A
Molecule details ›
Chain: A
Length: 124 amino acids
Theoretical weight: 13.27 KDa
Source organism: Chaetoceros gracilis
Expression system: Escherichia coli
UniProt:
  • Canonical: B6ZHE7 (Residues: 56-179; Coverage: 76%)
Gene name: psb31
Sequence domains: Photosystem II Psb31 protein
Structure domains: Sodium ion translocating NADH-quinone reductase subunit C-like

Ligands and Environments

2 bound ligands:
Ligand SO4 2 x SO4
Ligand GOL 1 x GOL
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL41XU
Spacegroup: P3121
Unit cell:
a: 92.411Å b: 92.411Å c: 31.283Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.186 0.186 0.195
Expression system: Escherichia coli

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Citations

5 review citations

The PsbP and PsbQ family proteins in the photosynthetic machinery of chloroplasts.
Ifuku K. (2014)
4 more