› 1gka

X-ray diffraction
3.23Å resolution

The molecular basis of the coloration mechanism in lobster shell. beta-crustacyanin at 3.2 A resolution

Released:
DOI: 10.2210/pdb1gka/pdb
PDB entry 1gka coloured by chain, front view.
PDB entry 1gka coloured by chain, side view.
PDB entry 1gka coloured by chain, top view.
Source organism: Homarus gammarus
Primary publication:
The molecular basis of the coloration mechanism in lobster shell: beta-crustacyanin at 3.2-A resolution.
Cianci M, Rizkallah PJ, Olczak A, Raftery J, Chayen NE, Zagalsky PF, Helliwell JR
Proc Natl Acad Sci U S A 99 9795-800 (2002)
PMID: 12119396

Function and Biology Details

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

Structure analysis Details

Assembly composition:
hetero dimer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-157741 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Crustacyanin-A1 subunit Chain: A
Molecule details ›
Chain: A
Length: 180 amino acids
Theoretical weight: 20.56 KDa
Source organism: Homarus gammarus
UniProt:
  • Canonical: P58989 (Residues: 2-181; Coverage: 99%)
Sequence domains: Lipocalin / cytosolic fatty-acid binding protein family
Structure domains: Lipocalin
Crustacyanin-A2 subunit Chain: B
Molecule details ›
Chain: B
Length: 174 amino acids
Theoretical weight: 19.69 KDa
Source organism: Homarus gammarus
UniProt:
  • Canonical: P80007 (Residues: 1-174; Coverage: 100%)
Sequence domains: Lipocalin / cytosolic fatty-acid binding protein family
Structure domains: Lipocalin

Ligands and Environments

4 bound ligands:
Ligand AXT 2 x AXT
Ligand D12 1 x D12
Ligand TRS 1 x TRS
Ligand EPE 1 x EPE
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SRS BEAMLINE PX14.1
Spacegroup: P6322
Unit cell:
a: 155.466Å b: 155.466Å c: 168.504Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.213 0.213 0.252

Quick links

Citations

11 review citations

The genetics and biochemistry of floral pigments.
Grotewold E. (2006)
10 more

11 mentions without citation

The molecular aspects of absorption and metabolism of carotenoids and retinoids in vertebrates.
Widjaja-Adhi et al. (2020)
10 more