CATH Classification
Level | CATH Code | Description |
---|---|---|
2 | Mainly Beta | |
2.30 | Roll | |
2.30.42 | Pdz3 Domain | |
2.30.42.10 | PDZ domain |
Domain Context
CATH Clusters
Superfamily | 2.30.42.10 |
Functional Family | Periplasmic serine endoprotease DegP-like |
Enzyme Information
3.4.21.107 |
Peptidase Do.
based on mapping to UniProt P0C0V0
Acts on substrates that are at least partially unfolded. The cleavage site P1 residue is normally between a pair of hydrophobic residues, such as Val-|-Val.
-!- This serine endopeptidase is essential for the clearance of denatured or aggregated proteins from the inner-membrane and periplasmic space in Escherichia coli. -!- Natural substrates of the enzyme include colicin A lysis protein, pilin subunits and MalS from E.coli. -!- The enzyme has weak peptidase activity with casein and other non- native substrates. -!- The peptidase acts as a chaperone at low temperatures but switches to a peptidase (heat shock protein) at higher temperatures. -!- Molecular chaperones and peptidases control the folded state of proteins by recognizing hydrophobic stretches of polypeptide that become exposed by misfolding or unfolding. -!- They then bind these hydrophobic substrates to prevent aggregation or assist in protein refolding. -!- If attempts at refolding fail, then irreversibly damaged proteins are degraded by peptidases such as this enzyme. -!- Belongs to peptidase family S1B.
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UniProtKB Entries (1)
P0C0V0 |
DEGP_ECOLI
Escherichia coli K-12
Periplasmic serine endoprotease DegP
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PDB Structure
PDB | 3CS0 |
External Links | |
Method | X-RAY DIFFRACTION |
Organism | |
Primary Citation |
Structural basis for the regulated protease and chaperone function of DegP
Nature
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