6ie3

X-ray diffraction
1.97Å resolution

Crystal structure of methyladenine demethylase

Released:
Source organism: Homo sapiens

Function and Biology Details

Reactions catalysed:
DNA-base-CH(3) + 2-oxoglutarate + O(2) = DNA-base + formaldehyde + succinate + CO(2)
N(6)-methyladenine in DNA + 2-oxoglutarate + O(2) = adenine in DNA + formaldehyde + succinate + CO(2)
The C-O-P bond 3' to the apurinic or apyrimidinic site in DNA is broken by a beta-elimination reaction, leaving a 3'-terminal unsaturated sugar and a product with a terminal 5'-phosphate

Structure analysis Details

Assembly composition:
monomeric (preferred)
PDBe Complex ID:
PDB-CPX-171810 (preferred)
Entry contents:
1 distinct polypeptide molecule
Macromolecule:
Nucleic acid dioxygenase ALKBH1 Chain: A
Molecule details ›
Chain: A
Length: 389 amino acids
Theoretical weight: 43.89 KDa
Source organism: Homo sapiens
Expression system: Escherichia coli BL21(DE3)
UniProt:
  • Canonical: Q13686 (Residues: 1-389; Coverage: 100%)
Gene names: ABH, ABH1, ALKBH, ALKBH1
Sequence domains: 2OG-Fe(II) oxygenase superfamily

Ligands and Environments

2 bound ligands:
No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: SSRF BEAMLINE BL19U1
Spacegroup: P65
Unit cell:
a: 56.732Å b: 56.732Å c: 191.686Å
α: 90° β: 90° γ: 120°
R-values:
R R work R free
0.204 0.203 0.233
Expression system: Escherichia coli BL21(DE3)