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- * Orn/Lys/Arg decarboxylases family 1 pyridoxal-phosphate attachment site *
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-
- Pyridoxal-dependent decarboxylases acting on ornithine, lysine, arginine and
- related substrates can be classified into two different families on the basis
- of sequence similarities [1]. The first family consists of:
-
- - Prokaryotic ornithine decarboxylase (EC 4.1.1.17) (ODC). ODC catalyzes the
- transformation of ornithine into putrescine.
- - Prokaryotic lysine decarboxylase (EC 4.1.1.18) (LDC). LDC catalyzes the
- transformation of lysine into cadaverine.
- - Escherichia coli biodegradative arginine decarboxylase (EC 4.1.1.19) (ADC).
- ADC catalyzes the transformation of arginine into agmatine.
-
- One of the regions of sequence similarity contains a conserved lysine residue
- which is known, in Escherichia coli LDC [2] and in ADC [3], to be the site of
- attachment of the pyridoxal-phosphate group. We have used this region as a
- signature pattern.
-
- -Consensus pattern: [STA]-x-S-x-H-K-x(2)-[GSTAN](2)-x-[STA]-Q-[STA](2)
- [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: October 1993 / Pattern and text revised.
-
- [ 1] Bairoch A.
- Unpublished observations (1993).
- [ 2] Meng S.-Y., Bennett G.N.
- J. Bacteriol. 174:2659-2669(1992).
- [ 3] Stim K.P., Bennett G.N.
- J. Bacteriol. 175:1221-1234(1993).
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