1vz2

From Proteopedia

PROLYL OLIGOPEPTIDASE FROM PORCINE BRAIN, Y73C/V427C/C255T MUTANT

Structural highlights

1vz2 is a 1 chain structure with sequence from Sus scrofa. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance.
Method:	X-ray diffraction, Resolution 2.2Å
Ligands:
Resources:	FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT

Function

PPCE_PIG Cleaves peptide bonds on the C-terminal side of prolyl residues within peptides that are up to approximately 30 amino acids long.

Evolutionary Conservation

Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf.

Publication Abstract from PubMed

Prolyl oligopeptidase contains a peptidase domain and its catalytic triad is covered by the central tunnel of a seven-bladed beta-propeller. This domain makes the enzyme an oligopeptidase by excluding large structured peptides from the active site. The apparently rigid crystal structure does not explain how the substrate can approach the catalytic groups. Two possibilities of substrate access were investigated: either blades 1 and 7 of the propeller domain move apart, or the peptidase and/or propeller domains move to create an entry site at the domain interface. Engineering disulfide bridges to the expected oscillating structures prevented such movements, which destroyed the catalytic activity and precluded substrate binding. This indicated that concerted movements of the propeller and the peptidase domains are essential for the enzyme action.

Concerted structural changes in the peptidase and the propeller domains of prolyl oligopeptidase are required for substrate binding.,Szeltner Z, Rea D, Juhasz T, Renner V, Fulop V, Polgar L J Mol Biol. 2004 Jul 9;340(3):627-37. PMID:15210359^[1]

From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

References

↑ Szeltner Z, Rea D, Juhasz T, Renner V, Fulop V, Polgar L. Concerted structural changes in the peptidase and the propeller domains of prolyl oligopeptidase are required for substrate binding. J Mol Biol. 2004 Jul 9;340(3):627-37. PMID:15210359 doi:10.1016/j.jmb.2004.05.011