› 3at5

X-ray diffraction
2.2Å resolution

Side-necked turtle (Pleurodira, Chelonia, REPTILIA) hemoglobin: cDNA-derived primary structures and X-ray crystal structures of Hb A

Released:
DOI: 10.2210/pdb3at5/pdb
PDB entry 3at5 coloured by chain, front view.
PDB entry 3at5 coloured by chain, side view.
PDB entry 3at5 coloured by chain, top view.
Source organism: Podocnemis unifilis
Primary publication:
Side-necked turtle (Pleurodira, Chelonia, reptilia) hemoglobin: cDNA-derived primary structures and X-ray crystal structures of Hb A.
Hasegawa T, Shishikura F, Kuwada T
IUBMB Life 63 188-96 (2011)
PMID: 21445850

Function and Biology Details

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

Structure analysis Details

Assembly composition:
hetero tetramer (preferred)
Assembly name:
PDBe Complex ID:
PDB-CPX-123010 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Globin domain-containing protein Chain: A
Molecule details ›
Chain: A
Length: 141 amino acids
Theoretical weight: 15.62 KDa
Source organism: Podocnemis unifilis
UniProt:
  • Canonical: E5RWQ0 (Residues: 2-142; Coverage: 99%)
Gene name: HBAA
Sequence domains: Globin
Structure domains: Globins
Globin domain-containing protein Chain: B
Molecule details ›
Chain: B
Length: 146 amino acids
Theoretical weight: 16.35 KDa
Source organism: Podocnemis unifilis
UniProt:
  • Canonical: E5RWQ1 (Residues: 2-147; Coverage: 99%)
Gene name: HBB
Sequence domains: Globin
Structure domains: Globins

Ligands and Environments

1 bound ligand:
Ligand HEM 2 x HEM
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU FR-E SUPERBRIGHT
Spacegroup: P41212
Unit cell:
a: 85.935Å b: 85.935Å c: 103.779Å
α: 90° β: 90° γ: 90°
R-values:
R R work R free
0.202 0.202 0.22

Quick links

Citations

3 citation in other articles

Lack of conventional oxygen-linked proton and anion binding sites does not impair allosteric regulation of oxygen binding in dwarf caiman hemoglobin.
Weber et al. (2013)
2 more

2 mentions without citation

A stochastic evolutionary model for protein structure alignment and phylogeny.
Challis et al. (2012)
1 more