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- *******************************
- * ClpP proteases active sites *
- *******************************
-
- The Clp proteinase from Escherichia coli cleaves peptides in various proteins
- in a process that requires ATP hydrolysis [1]. Clp is a dimeric protein which
- consists of a proteolytic subunit (gene clpP) and either of two related ATP-
- binding regulatory subunits (genes clpA and clpX). ClpP is a serine protease
- which has a chymotrypsin-like activity. Its catalytic activity seems to be
- provided by a charge relay system similar to that of the trypsin family of
- serine proteases, but which evolved by independent convergent evolution.
-
- Proteases highly similar to ClpP have been found to be encoded in the genome
- of the chloroplast of plants and seem to be also present in other eukaryotes.
-
- The sequences around two of the residues involved in the catalytic triad (a
- serine and a histidine) are highly conserved and can be used as signature
- patterns specific to that category of proteases.
-
- -Consensus pattern: T-x(2)-[LIVM]-G-x-A-A-S-M-[PAG]-[STA]
- [S is the active site residue]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Consensus pattern: K-R-x(3)-P-x(3)-[LIVMY]-M-[LIVM]-H-Q-P
- [H is the active site residue]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
-
- -Last update: June 1994 / Patterns and text revised.
-
- [ 1] Maurizi M.R., Clark W.P., Kim S.-H., Gottesman S.
- J. Biol. Chem. 265:12546-12552(1990).
-