The Enzyme Database

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Accepted name: carboxynorspermidine decarboxylase
Reaction: (1) carboxynorspermidine = bis(3-aminopropyl)amine + CO2
(2) carboxyspermidine = spermidine + CO2
Glossary: bis(3-aminopropyl)amine = norspermidine
Other name(s): carboxyspermidine decarboxylase; CANSDC; VC1623 (gene name)
Systematic name: carboxynorspermidine carboxy-lyase (bis(3-aminopropyl)amine-forming)
Comments: A pyridoxal 5′-phosphate enzyme. Part of a bacterial polyamine biosynthesis pathway. The enzyme is essential for biofilm formation in the bacterium Vibrio cholerae [1]. The enzyme from Campylobacter jejuni only produces spermidine in vivo even though it shows activity with carboxynorspermidine in vitro [3].
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
1.  Lee, J., Sperandio, V., Frantz, D.E., Longgood, J., Camilli, A., Phillips, M.A. and Michael, A.J. An alternative polyamine biosynthetic pathway is widespread in bacteria and essential for biofilm formation in Vibrio cholerae. J. Biol. Chem. 284 (2009) 9899–9907. [DOI] [PMID: 19196710]
2.  Deng, X., Lee, J., Michael, A.J., Tomchick, D.R., Goldsmith, E.J. and Phillips, M.A. Evolution of substrate specificity within a diverse family of β/α-barrel-fold basic amino acid decarboxylases: X-ray structure determination of enzymes with specificity for L-arginine and carboxynorspermidine. J. Biol. Chem. 285 (2010) 25708–25719. [DOI] [PMID: 20534592]
3.  Hanfrey, C.C., Pearson, B.M., Hazeldine, S., Lee, J., Gaskin, D.J., Woster, P.M., Phillips, M.A. and Michael, A.J. Alternative spermidine biosynthetic route is critical for growth of Campylobacter jejuni and is the dominant polyamine pathway in human gut microbiota. J. Biol. Chem. 286 (2011) 43301–43312. [DOI] [PMID: 22025614]
[EC created 2012]

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