2aou

X-ray diffraction
2.3Å resolution

Histamine Methyltransferase Complexed with the Antimalarial Drug Amodiaquine

Released:
Source organism: Homo sapiens

Function and Biology Details

Reaction catalysed:
S-adenosyl-L-methionine + histamine = S-adenosyl-L-homocysteine + N(tau)-methylhistamine
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-156132 (preferred)
Entry contents:
2 distinct polypeptide molecules
Macromolecules (2 distinct):
Histamine N-methyltransferase Chain: A
Molecule details ›
Chain: A
Length: 292 amino acids
Theoretical weight: 33.35 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P50135 (Residues: 1-292; Coverage: 100%)
Gene name: HNMT
Sequence domains: Methyltransferase domain
Structure domains: Vaccinia Virus protein VP39
Histamine N-methyltransferase Chain: B
Molecule details ›
Chain: B
Length: 292 amino acids
Theoretical weight: 33.35 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli
UniProt:
  • Canonical: P50135 (Residues: 1-292; Coverage: 100%)
Gene name: HNMT
Sequence domains: Methyltransferase domain
Structure domains: Vaccinia Virus protein VP39

Ligands and Environments

1 bound ligand:
2 modified residues:

Experiments and Validation Details

Entry percentile scores
X-ray source: NSLS BEAMLINE X26C
Spacegroup: P6
Unit cell:
a: 130.89Å b: 130.89Å c: 63.32Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.213 0.207 0.258
Expression system: Escherichia coli