Structural highlights
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
Proteases have a variety of strategies for selecting substrates in order to prevent uncontrolled protein degradation. A recent crystal structure determination of prolyl oligopeptidase has suggested a way for substrate selection involving an unclosed seven-bladed beta-propeller domain. We have engineered a disulfide bond between the first and seventh blades of the propeller, which resulted in the loss of enzymatic activity. These results provided direct evidence for a novel strategy of regulation in which oscillating propeller blades act as a gating filter during catalysis, letting small peptide substrates into the active site while excluding large proteins to prevent accidental proteolysis.
Catalysis of serine oligopeptidases is controlled by a gating filter mechanism.,Fulop V, Szeltner Z, Polgar L EMBO Rep. 2000 Sep;1(3):277-81. PMID:11256612[1]
From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.
See Also
References
- ↑ Fulop V, Szeltner Z, Polgar L. Catalysis of serine oligopeptidases is controlled by a gating filter mechanism. EMBO Rep. 2000 Sep;1(3):277-81. PMID:11256612 doi:10.1093/embo-reports/kvd048
