X-ray diffraction
2.11Å resolution

Crystal Structure of Met260Ala mutant of E. coli Aminopeptidase N in complex with L-Leucine

Source organism: Escherichia coli K-12
Entry authors: Addlagatta A, Gumpena R

Function and Biology Details

Reaction catalysed:
Release of an N-terminal amino acid, Xaa-|-Yaa- from a peptide, amide or arylamide. Xaa is preferably Ala, but may be most amino acids including Pro (slow action). When a terminal hydrophobic residue is followed by a prolyl residue, the two may be released as an intact Xaa-Pro dipeptide.
Biochemical function:
Biological process:
Cellular component:

Structure analysis Details

Assembly composition:
monomeric (preferred)
Entry contents:
1 distinct polypeptide molecule
Aminopeptidase N Chain: A
Molecule details ›
Chain: A
Length: 866 amino acids
Theoretical weight: 98.48 KDa
Source organism: Escherichia coli K-12
Expression system: Escherichia coli BL21(DE3)
  • Canonical: P04825 (Residues: 5-870; Coverage: 100%)
Gene names: JW0915, b0932, pepN
Sequence domains:
Structure domains:

Ligands and Environments

No modified residues

Experiments and Validation Details

Entry percentile scores
X-ray source: RIGAKU MICROMAX-007 HF
Spacegroup: P3121
Unit cell:
a: 120.277Å b: 120.277Å c: 169.813Å
α: 90° β: 90° γ: 120°
R R work R free
0.126 0.124 0.165
Expression system: Escherichia coli BL21(DE3)