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- ******************************************************************
- * Galactose-1-phosphate uridyl transferase active site signature *
- ******************************************************************
-
- Galactose-1-phosphate uridyl transferase (EC 2.7.7.10) (galT) catalyzes the
- transfer of an uridyldiphosphate group on galactose (or glucose) 1-phosphate.
- During the reaction, the uridyl moiety links to a histidine residue. In the
- Escherichia coli enzyme, it has been shown [1] that two histidine residues
- separated by a single proline residue are essential for enzyme activity. They
- are conserved in all known GalT sequences.
-
- -Consensus pattern: F-E-N-[RK]-G-x(3)-G-x(4)-H-P-H-x-Q
- [The two H's are the active site residues]
- -Sequences known to belong to this class detected by the pattern: ALL, except
- for Lactobacillus helveticus galT which does not seem to be related to other
- members of this family [2].
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: December 1992 / Text revised.
-
- [ 1] Reichardt J.K.V., Berg P.
- Nucleic Acids Res. 16:9017-9026(1988).
- [ 2] Mollet B., Pilloud N.
- J. Bacteriol. 173:4464-4473(1991).
-