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- ************************************************
- * Phosphoenolpyruvate carboxylase active sites *
- ************************************************
-
- Phosphoenolpyruvate carboxylase (EC 4.1.1.31) (PEPcase) catalyzes the
- irreversible beta-carboxylation of phosphoenolpyruvate by bicarbonate to yield
- oxaloacetate and phosphate. The enzyme is found in all plants and in a variety
- of microorganisms. A histidine [1] and a lysine [2] have been implicated in
- the catalytic mechanism of this enzyme; the regions around these active site
- residues are highly conserved in PEPcase from various plants, bacteria and
- cyanobacteria and can be used as a signature patterns for this type of enzyme.
-
- -Consensus pattern: V-x-T-A-H-P-T-[EQ]-x(2)-R-[KRH]
- [H is an 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: V-M-[LIVM]-G-Y-S-D-S-x-K-D-[STAG]-G
- [K is an 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: December 1992 / Patterns and text revised.
-
- [ 1] Terada K., Izui K.
- Eur. J. Biochem. 202:797-803(1991).
- [ 2] Jiao J.-A., Podesta F.E., Chollet R., O'Leary M.H., Andreo C.S.
- Biochim. Biophys. Acta 1041:291-295(1990).
-