HMM Summary Page: TIGR01854

AccessionTIGR01854
Namelipid_A_lpxH
FunctionUDP-2,3-diacylglucosamine hydrolase
Gene SymbollpxH
Trusted Cutoff190.35
Domain Trusted Cutoff190.35
Noise Cutoff94.55
Domain Noise Cutoff94.55
Isology Typeequivalog
EC Number3.6.1.-
HMM Length231
Mainrole CategoryCell envelope
Subrole CategoryBiosynthesis and degradation of surface polysaccharides and lipopolysaccharides
Gene Ontology TermGO:0008758: UDP-2,3-diacylglucosamine hydrolase activity molecular_function
GO:0009245: lipid A biosynthetic process biological_process
AuthorHaft DH
Entry DateMar 17 2003 9:07AM
Last ModifiedFeb 14 2011 3:27PM
CommentThis HMM represents LpxH, UDP-2,3-diacylglucosamine hydrolase, and essential enzyme in E. coli that catalyzes the fourth step in lipid A biosynthesis. Note that Pseudomonas aeruginosa has both a member of this family that shares this function and a more distant homolog, designated LpxH2, that does not. Many species that produce lipid A lack an lpxH gene in this family; some of those species have an lpxH2 gene instead, although for which the function is unknown.
ReferencesRM 12000771 RT Accumulation of the lipid A precursor UDP-2,3-diacylglucosamine in an Escherichia coli mutant lacking the lpxH gene. RA Babinski KJ, Kanjilal SJ, Raetz CR. RL J Biol Chem 2002 Jul 19;277(29):25947-56 DR HAMAP; MF_00575; 107 of 110
Genome PropertyGenProp0204: KDO(2)-lipid A (Re LPS) biosynthesis and delivery (HMM)