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EC Explorer

EC 2.3.1.243 Details
EC number
2.3.1.243
Accepted name
acyl-Kdo2-lipid IVA acyltransferase
Reaction
a fatty acyl-[acyl-carrier protein] + an α-Kdo-(2→4)-α-Kdo-(2→6)-(acyl)-[lipid IVA] = an α-Kdo-(2→4)-α-Kdo-(2→6)-(acyl)2-[lipid IVA] + an [acyl-carrier protein]
Other name(s)
lpxM (gene name), MsbB acyltransferase, myristoyl-[acyl-carrier protein]:α-Kdo-(2→4)-α-Kdo-(2→6)-(dodecanoyl)-lipid IVA O-myristoyltransferase, tetradecanoyl-[acyl-carrier protein]:dodecanoyl-Kdo2-lipid IVA O-tetradecanoyltransferase, lauroyl-Kdo2-lipid IVA myristoyltransferase
Systematic name
fatty acyl-[acyl-carrier protein]:α-Kdo-(2→4)-α-Kdo-(2→6)-(acyl)-[lipid IVA] O-acyltransferase
Comment
The enzyme is involved in the biosynthesis of the phosphorylated outer membrane glycolipid lipid A. It transfers an acyl group to the 3-O position of the 3R-hydroxyacyl already attached at the 2-O position of the non-reducing glucosamine molecule. The enzyme from the bacterium Escherichia coli is specific for myristoyl (C14) acyl groups, giving the enzyme its previous accepted name. However, enzymes from different species accept highly variable substrates.
History
created 2014, modified 2021
EC Tree
2.3.1.55 created 1976, deleted 1999
2.3.1.120 created 1990, deleted 1992
2.3.1.124 created 1990, deleted 1992