The Enzyme Database

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EC 1.13.12.22     
Accepted name: deoxynogalonate monooxygenase
Reaction: deoxynogalonate + O2 = nogalonate + H2O
For diagram of nogalamycin biosynthesis, click here
Glossary: deoxynogalonate = [4,5-dihydroxy-10-oxo-3-(3-oxobutanoyl)-9,10-dihydroanthracen-2-yl]acetate
nogalonate = [4,5-dihydroxy-9,10-dioxo-3-(3-oxobutanoyl)-9,10-dihydroanthracen-2-yl]acetate
Other name(s): SnoaB (gene name); 12-deoxynogalonic acid oxidoreductase; [4,5-dihydroxy-10-oxo-3-(3-oxobutanoyl)-9,10-dihydroanthracen-2-yl]acetate oxidase; [4,5-dihydroxy-10-oxo-3-(3-oxobutanoyl)-9,10-dihydroanthracen-2-yl]acetate monooxygenase; deoxynogalonate oxidoreductase
Systematic name: deoxynogalonate:oxygen oxidoreductase
Comments: The enzyme, characterized from the bacterium Streptomyces nogalater, is involved in the biosynthesis of the aromatic polyketide nogalamycin.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Koskiniemi, H., Grocholski, T., Schneider, G. and Niemi, J. Expression, purification and crystallization of the cofactor-independent monooxygenase SnoaB from the nogalamycin biosynthetic pathway. Acta Crystallogr. Sect. F Struct. Biol. Cryst. Commun. 65 (2009) 256–259. [DOI] [PMID: 19255477]
2.  Grocholski, T., Koskiniemi, H., Lindqvist, Y., Mantsala, P., Niemi, J. and Schneider, G. Crystal structure of the cofactor-independent monooxygenase SnoaB from Streptomyces nogalater: implications for the reaction mechanism. Biochemistry 49 (2010) 934–944. [DOI] [PMID: 20052967]
[EC 1.13.12.22 created 2015]
 
 
EC 5.5.1.26     
Accepted name: nogalonic acid methyl ester cyclase
Reaction: nogalaviketone = methyl nogalonate
Glossary: methyl nogalonate = methyl [4,5-dihydroxy-9,10-dioxo-3-(3-oxobutanoyl)-9,10-dihydroanthracen-2-yl]acetate
nogalaviketone = methyl 5,7-dihydroxy-2-methyl-4,6,11-trioxo-3,4,6,11-tetrahydrotetracene-1-carboxylate
Other name(s): methyl nogalonate cyclase; SnoaL (gene name); methyl nogalonate lyase (cyclizing)
Systematic name: nogalaviketone lyase (ring-opening)
Comments: The enzyme, characterized from the bacterium Streptomyces nogalater, is involved in the biosynthesis of the aromatic polyketide nogalamycin.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Sultana, A., Kallio, P., Jansson, A., Wang, J.S., Niemi, J., Mantsala, P. and Schneider, G. Structure of the polyketide cyclase SnoaL reveals a novel mechanism for enzymatic aldol condensation. EMBO J. 23 (2004) 1911–1921. [DOI] [PMID: 15071504]
2.  Sultana, A., Kallio, P., Jansson, A., Niemi, J., Mantsala, P. and Schneider, G. Crystallization and preliminary crystallographic data of SnoaL, a polyketide cyclase in nogalamycin biosynthesis. Acta Crystallogr. D Biol. Crystallogr. 60 (2004) 1118–1120. [DOI] [PMID: 15159574]
[EC 5.5.1.26 created 2015]
 
 


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