Function
Hydrolyzes the pyrophosphate bond of UDP-2,3-diacylglucosamine to yield 2,3-diacylglucosamine 1-phosphate (lipid X) and UMP by catalyzing the attack of water at the alpha-P atom (PubMed:12000770). Involved in the biosynthesis of lipid A, a phosphorylated glycolipid that anchors the lipopolysaccharide to the outer membrane of the cell (PubMed:12000770, PubMed:12000771). Is essential for E.coli growth (PubMed:12000771). Does not cleave the unacylated UDP-GlcNAc, the mono-acylated UDP-3-O-(R)-3-hydroxymyristoyl-GlcNAc, and CDP-diacylglycerol (PubMed:12000770).