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- *********************
- * Enolase signature *
- *********************
-
- Enolase (EC 4.2.1.11) is a glycolytic enzyme that catalyzes the dehydration of
- 2-phospho-D-glycerate to phosphoenolpyruvate. It is a dimeric enzyme that
- requires magnesium both for catalysis and stabilizing the dimer. Enolase is
- probably found in all organisms that metabolize sugars. In vertebrates, there
- are three different tissue-specific isozymes: alpha present in most tissues,
- beta in muscles and gamma found only in nervous tissues.
-
- As a signature pattern for enolase, we selected a conserved region that
- includes an Asp-Asp dipeptide. According to the three-dimensional structure of
- enolase [1], the first aspartic acid is one of three residues involved in
- binding the magnesium ion while the second is part of the active site region.
-
- Tau-crystallin, one of the major lens proteins in some fish, reptiles and
- birds, has been shown [2] to be evolutionary related to enolase.
-
- -Consensus pattern: D-D-L-x-V-[STA]-N-[PV]
- [The first D is a magnesium ligand]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: December 1992 / Pattern and text revised.
-
- [ 1] Lebioda L., Stec B., Brewer J.M.
- J. Biol. Chem. 264:3685-3693(1989).
- [ 2] Wistow G., Piattigorsky J.
- Science 236:1554-1556(1987).
-