UDP-3-O-[3-hydroxymyristoyl] glucosamine N-acyltransferase (<db_xref db="EC" dbkey="2.3.1"/>) catalyses an early step in lipid A biosynthesis [<cite idref="PUB00010088"/>]: <reaction>UDP-3-O-(3-hydroxytetradecanoyl)glucosamine + (R)-3-hydroxytetradecanoyl- [acyl carrier protein] = UDP-2,3-bis(3-hydroxytetradecanoyl)glucosamine + [acyl carrier protein] </reaction>This enzyme contains several hexapeptide repeats and forms part of the wider bacterial transferase hexapeptide repeat family. UDP-3-O-[3-hydroxymyristoyl] glucosamine N-acyltransferase