› 3qbk

X-ray diffraction
2.2Å resolution

Bromide-bound form of pharaonis halorhodopsin

Released:
DOI: 10.2210/pdb3qbk/pdb
PDB entry 3qbk coloured by chain, front view.
PDB entry 3qbk coloured by chain, side view.
PDB entry 3qbk coloured by chain, top view.
Source organism: Natronomonas pharaonis
Primary publication:
Crystal structures of an O-like blue form and an anion-free yellow form of pharaonis halorhodopsin.
Kanada S, Takeguchi Y, Murakami M, Ihara K, Kouyama T
J Mol Biol 413 162-76 (2011)
PMID: 21871461

Function and Biology Details

Biochemical function:
Biological process:
Cellular component:
Sequence domains:

Structure analysis Details

Assembly composition:
homo trimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-147416 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Halorhodopsin Chains: A, B, D
Molecule details ›
Chains: A, B, D
Length: 291 amino acids
Theoretical weight: 30.98 KDa
Source organism: Natronomonas pharaonis
UniProt:
  • Canonical: P15647 (Residues: 1-291; Coverage: 100%)
Gene name: hop
Sequence domains: Bacteriorhodopsin-like protein
Structure domains: Rhodopsin 7-helix transmembrane proteins

Ligands and Environments

3 bound ligands:
Ligand RET 3 x RET
Ligand 22B 2 x 22B
Ligand BR 6 x BR
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL26B2
Spacegroup: C2
Unit cell:
a: 152.15Å b: 99.72Å c: 99.97Å
α: 90° β: 127.8° γ: 90°
R-values:
R R work R free
0.248 0.248 0.267

Quick links

Citations

3 review citations

Microbial and animal rhodopsins: structures, functions, and molecular mechanisms.
Ernst et al. (2014)
2 more