Biology:Carboxynorspermidine synthase

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Carboxynorspermidine synthase
Identifiers
EC number1.5.1.43
Databases
IntEnzIntEnz view
BRENDABRENDA entry
ExPASyNiceZyme view
KEGGKEGG entry
MetaCycmetabolic pathway
PRIAMprofile
PDB structuresRCSB PDB PDBe PDBsum

Carboxynorspermidine synthase (EC 1.5.1.43, carboxynorspermidine dehydrogenase, carboxyspermidine dehydrogenase, CASDH, CANSDH) is an enzyme with systematic name carboxynorspermidine:NADP+ oxidoreductase.[1][2][3] This enzyme catalyses the following chemical reactions

(1) carboxynorspermidine + H2O + NADP+ [math]\displaystyle{ \rightleftharpoons }[/math] L-aspartate 4-semialdehyde + propane-1,3-diamine + NADPH + H+
(2) carboxyspermidine + H2O + NADP+ [math]\displaystyle{ \rightleftharpoons }[/math] L-aspartate 4-semialdehyde + putrescine + NADPH + H+

The reaction takes place in the opposite direction.

References

  1. "Purification and some properties of carboxynorspermidine synthase participating in a novel biosynthetic pathway for norspermidine in Vibrio alginolyticus". Journal of General Microbiology 137 (7): 1737–42. July 1991. doi:10.1099/00221287-137-7-1737. PMID 1955861. 
  2. "An alternative polyamine biosynthetic pathway is widespread in bacteria and essential for biofilm formation in Vibrio cholerae". The Journal of Biological Chemistry 284 (15): 9899–907. April 2009. doi:10.1074/jbc.M900110200. PMID 19196710. 
  3. "Alternative spermidine biosynthetic route is critical for growth of Campylobacter jejuni and is the dominant polyamine pathway in human gut microbiota". The Journal of Biological Chemistry 286 (50): 43301–12. December 2011. doi:10.1074/jbc.M111.307835. PMID 22025614. 

External links