X-ray diffraction
0.9Å resolution

Crystal structure of photoactive yellow protein (PYP); 3-Br-p-coumaric acid chromophore


Function and Biology Details

Biochemical function:
Cellular component:
  • not assigned

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Photoactive yellow protein Chain: A
Molecule details ›
Chain: A
Length: 128 amino acids
Theoretical weight: 14.17 KDa
Source organism: Halorhodospira halophila
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P16113 (Residues: 1-125; Coverage: 100%)
Gene name: pyp
Sequence domains: PAS fold

Ligands and Environments

1 bound ligand:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRL BEAMLINE BL9-2
Spacegroup: P63
Unit cell:
a: 65.767Å b: 65.767Å c: 40.577Å
α: 90° β: 90° γ: 120°
R R work R free
0.127 0.127 0.137
Expression system: Escherichia coli BL21(DE3)