X-ray diffraction
2.1Å resolution

sensory rhodopsin II

Source organism: Natronomonas pharaonis
Primary publication:
X-ray structure of sensory rhodopsin II at 2.1-A resolution.
Proc. Natl. Acad. Sci. U.S.A. 98 10131-6 (2001)
PMID: 11504917

Function and Biology Details

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Sensory rhodopsin-2 Chain: A
Molecule details ›
Chain: A
Length: 239 amino acids
Theoretical weight: 25.37 KDa
Source organism: Natronomonas pharaonis
Expression system: Escherichia coli
  • Canonical: P42196 (Residues: 1-239; Coverage: 100%)
Gene names: sop2, sopII
Sequence domains: Bacteriorhodopsin-like protein
Structure domains: Rhopdopsin 7-helix transmembrane proteins

Ligands and Environments

2 bound ligands:

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: ESRF BEAMLINE ID14-2
Spacegroup: C2221
Unit cell:
a: 84.83Å b: 128.74Å c: 50.74Å
α: 90° β: 90° γ: 90°
R R work R free
0.237 0.237 0.256
Expression system: Escherichia coli