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- ********************************************************
- * Alanine racemase pyridoxal-phosphate attachment site *
- ********************************************************
-
- Alanine racemase (EC 5.1.1.1) [1] catalyzes the pyridoxal-dependent conversion
- of L-alanine into D-alanine, a key building block of bacterial peptidoglycan.
- In bacteria such as Escherichia coli or Salmonella typhimurium, there are two
- forms of alanine racemase: a biosynthetic form (alr) required for cell wall
- formation and a form (dadB) that functions in L-alanine catabolism. In
- contrast to dadB and alr which are monomeric enzymes, the alanine racemase of
- Bacillaceae are homodimers. In Pseudomonas putida, there is a broad-
- specificity amino acid racemase which is functionally and structurally related
- to alanine racemase.
-
- The pyridoxal-phosphate group of alanine racemase is attached to a lysine
- residue. The sequence around this residue is highly conserved in all forms of
- the enzyme.
-
- -Consensus pattern: V-x-K-A-[DN]-A-Y-G-H-G
- [K is the pyridoxal-P attachment site]
- -Sequences known to belong to this class detected by the pattern: ALL.
- -Other sequence(s) detected in SWISS-PROT: NONE.
- -Last update: November 1990 / First entry.
-
- [ 1] Hayashi H., Wada H., Yoshimura T., Esaki N., Soda K.
- Annu. Rev. Biochem. 59:87-110(1990).
-