The Enzyme Database

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EC 2.3.1.172     
Accepted name: anthocyanin 5-O-glucoside 6′′′-O-malonyltransferase
Reaction: malonyl-CoA + pelargonidin 3-O-(6-caffeoyl-β-D-glucoside) 5-O-β-D-glucoside = CoA + 4′′′-demalonylsalvianin
For diagram of salvianin biosynthesis, click here
Glossary: salvianin = pelargonidin 3-O-(6-caffeoyl-β-D-glucoside) 5-O-(4,6-di-O-malonyl-β-D-glucoside)
4′′′-demalonylsalvianin = pelargonidin 3-O-(6-caffeoyl-β-D-glucoside) 5-O-(6-O-malonyl-β-D-glucoside)
pelargonidin = 3,4′,5,7-tetrahydroxyflavylium
Systematic name: malonyl-CoA:pelargonidin-3-O-(6-caffeoyl-β-D-glucoside)-5-O-β-D-glucoside 6′′′-O-malonyltransferase
Comments: Specific for the penultimate step in salvianin biosynthesis. The enzyme also catalyses the malonylation of shisonin to malonylshisonin [cyanidin 3-O-(6′′-O-p-coumaryl-β-D-glucoside)-5-(6′′′-O-malonyl-β-D-glucoside)]. The compounds 4′′′-demalonylsalvianin, salvianin, pelargonidin 3,5-diglucoside and delphinidin 3,5-diglucoside cannot act as substrates.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc, CAS registry number: 380229-66-3
References:
1.  Suzuki, H., Nakayama, T., Yonekura-Sakakibara, K., Fukui, Y., Nakamura, N., Nakao, M., Tanaka, Y., Yamaguchi, M.A., Kusumi, T. and Nishino, T. Malonyl-CoA:anthocyanin 5-O-glucoside-6′′′-O-malonyltransferase from scarlet sage (Salvia splendens) flowers. J. Biol. Chem. 276 (2001) 49013–49019. [DOI] [PMID: 11598135]
[EC 2.3.1.172 created 2004]
 
 
EC 2.3.1.214     
Accepted name: pelargonidin 3-O-(6-caffeoylglucoside) 5-O-(6-O-malonylglucoside) 4′′′-malonyltransferase
Reaction: malonyl-CoA + 4′′′-demalonylsalvianin = CoA + salvianin
For diagram of salvianin biosynthesis, click here
Glossary: salvianin = pelargonidin 3-O-(6-caffeoyl-β-D-glucoside) 5-O-(4,6-di-O-malonyl-β-D-glucoside)
4′′′-demalonylsalvianin = pelargonidin 3-O-(6-caffeoyl-β-D-glucoside) 5-O-(6-O-malonyl-β-D-glucoside)
Other name(s): malonyl-CoA:anthocyanin 5-glucoside 4′′′-O-malonyltransferase; Ss5MaT2
Systematic name: malonyl-CoA:4′′′-demalonylsalvianin 4′′′-O-malonyltransferase
Comments: Isolated from the plant Salvia splendens (scarlet sage).
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Suzuki, H., Sawada, S., Watanabe, K., Nagae, S., Yamaguchi, M.A., Nakayama, T. and Nishino, T. Identification and characterization of a novel anthocyanin malonyltransferase from scarlet sage (Salvia splendens) flowers: an enzyme that is phylogenetically separated from other anthocyanin acyltransferases. Plant J. 38 (2004) 994–1003. [DOI] [PMID: 15165190]
[EC 2.3.1.214 created 2013]
 
 
EC 2.3.1.215     
Accepted name: anthocyanidin 3-O-glucoside 6′′-O-acyltransferase
Reaction: 4-hydroxycinnamoyl-CoA + an anthocyanidin 3-O-β-D-glucoside = CoA + an anthocyanidin 3-O-[6-O-(4-hydroxycinnamoyl)-β-D-glucoside]
For diagram of anthocyanidin acylglucoside biosynthesis, click here and for diagram of salvianin biosynthesis, click here
Glossary: 4-hydroxycinnamoyl-CoA = 4-coumaroyl-CoA
3,4-dihydroxycinnamoyl-CoA = caffeoyl-CoA
cyanidin = 3,3′,4′,5,7-pentahydroxyflavylium
delphinidin = 3,3′,4′,5,5′,7-hexahydroxyflavylium
Systematic name: 4-hydroxycinnamoyl-CoA:anthocyanin-3-O-glucoside 6′′-O-acyltransferase
Comments: Isolated from the plants Perilla frutescens and Gentiana triflora (clustered gentian). Acts on a range of anthocyanidin 3-O-glucosides, 3,5-di-O-glucosides and cyanidin 3-rutinoside. It did not act on delphinidin 3,3′,7-tri-O-glucoside. Recombinant Perilla frutescens enzyme could utilize caffeoyl-CoA but not malonyl-CoA as alternative acyl donor.
Links to other databases: BRENDA, EXPASY, KEGG, MetaCyc
References:
1.  Fujiwara, H., Tanaka, Y., Fukui, Y., Ashikari, T., Yamaguchi, M. and Kusumi, T. Purification and characterization of anthocyanin 3-aromatic acyltransferase from Perilla frutescens. Plant Sci. 137 (1998) 87–94.
2.  Yonekura-Sakakibara, K., Tanaka, Y., Fukuchi-Mizutani, M., Fujiwara, H., Fukui, Y., Ashikari, T., Murakami, Y., Yamaguchi, M. and Kusumi, T. Molecular and biochemical characterization of a novel hydroxycinnamoyl-CoA: anthocyanin 3-O-glucoside-6"-O-acyltransferase from Perilla frutescens. Plant Cell Physiol. 41 (2000) 495–502. [DOI] [PMID: 10845463]
[EC 2.3.1.215 created 2013]
 
 


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