› 4qid

X-ray diffraction
2.57Å resolution

Crystal structure of Haloquadratum walsbyi bacteriorhodopsin

Released:
DOI: 10.2210/pdb4qid/pdb
PDB entry 4qid coloured by chain, front view.
PDB entry 4qid coloured by chain, side view.
PDB entry 4qid coloured by chain, top view.
Source organism: Haloquadratum walsbyi DSM 16790
Entry authors: Wang AHJ, Hsu MF, Yang CS, Fu HY

Function and Biology Details

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

Structure analysis Details

Assembly composition:
homo dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-172746 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Bacteriorhodopsin-I Chains: A, B
Molecule details ›
Chains: A, B
Length: 262 amino acids
Theoretical weight: 28.49 KDa
Source organism: Haloquadratum walsbyi DSM 16790
Expression system: Escherichia coli
UniProt:
  • Canonical: Q18DH8 (Residues: 3-254; Coverage: 99%)
Gene names: HQ_1014A, bop1, bopI
Sequence domains: Bacteriorhodopsin-like protein
Structure domains: Rhodopsin 7-helix transmembrane proteins

Ligands and Environments

3 bound ligands:
Ligand RET 2 x RET
Ligand ACT 2 x ACT
Ligand MPG 1 x MPG
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SPRING-8 BEAMLINE BL44XU
Spacegroup: C2
Unit cell:
a: 131.939Å b: 29.799Å c: 124.973Å
α: 90° β: 118.76° γ: 90°
R-values:
R R work R free
0.208 0.207 0.229
Expression system: Escherichia coli

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