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- *************************************
- * Phosphoglycerate kinase signature *
- *************************************
-
- Phosphoglycerate kinase (EC 2.7.2.3) (PGK) [1] catalyzes the second step in
- the second phase of glycolysis, the reversible conversion of 1,3-diphospho-
- glycerate to 3-phosphoglycerate with generation of one molecule of ATP. PGK
- is found in all living organisms and its sequence has been highly conserved
- throughout evolution. It is a two-domain protein; each domain is composed of
- six repeats of an alpha/beta structural motif. As a signature pattern for
- PGK's, we selected a conserved region which forms a loop between one of the
- beta sheets and an alpha helix. This loop is part of the enzyme's substrate-
- binding cleft; the conserved amino acids are almost all involved in substrate-
- binding.
-
- -Consensus pattern: N-G-P-x-G-x-F-E
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: December 1991 / Text revised.
-
- [ 1] Watson H.C., Littlechild J.A.
- Biochem. Soc. Trans. 18:187-190(1990).
-