ISDA

Deposition Date 2003-12-10

Release Date 2004-02-10

Last Version Date 2024-10-30

Entry Detail

PDB ID:

1RTQ

Keywords:

HYDROLASE

Title:

The 0.95 Angstrom Resolution Crystal Structure of the Aminopeptidase from Aeromonas proteolytica

Biological Source:

Source Organism:

Vibrio proteolyticus (Taxon ID: 671)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

0.95 Å

R-Value Free:

0.15

R-Value Work:

0.13

R-Value Observed:

0.13

Space Group:

P 61 2 2

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Molecule:Bacterial leucyl aminopeptidase
Chain IDs:A
Chain Length:299
Number of Molecules:1
Biological Source:Vibrio proteolyticus

UniProt ID:Q01693 Pfam ID:PF04389 EC:3.4.11.10

Ligand Molecules

SCN

Primary Citation

The high-resolution structures of the neutral and the low pH crystals of aminopeptidase from Aeromonas proteolytica.

Desmarais, W, Bienvenue, D.L, Bzymek, K.P, Petsko, G.A, Ringe, D, Holz, R.C.Show

J.Biol.Inorg.Chem. 11 398 408 (2006)

PMID: 16596389 DOI: 10.1007/s00775-006-0093-x

Abstact

The aminopeptidase from Aeromonas proteolytica (AAP) contains two zinc ions in the active site and catalyzes the degradation of peptides. Herein we report the crystal structures of AAP at 0.95-A resolution at neutral pH and at 1.24-A resolution at low pH. The combination of these structures allowed the precise modeling of atomic positions, the identification of the metal bridging oxygen species, and insight into the physical properties of the metal ions. On the basis of these structures, a new putative catalytic mechanism is proposed for AAP that is likely relevant to all binuclear metalloproteases.

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Primary Citation of related structures