>cd03352 LbH_LpxD UDP-3-O-acyl-glucosamine N-acyltransferase (LpxD): The enzyme catalyzes the transfer of 3-hydroxymyristic acid or 3-hydroxy-arachidic acid, depending on the organism, from the acyl carrier protein (ACP) to UDP-3-O-acyl-glucosamine to produce UDP-2,3-diacyl-GlcNAc. This constitutes the third step in the lipid A biosynthetic pathway in Gram-negative bacteria. LpxD is a homotrimer, with each subunit consisting of a novel combination of an N-terminal uridine-binding domain, a core lipid-binding left-handed parallel beta helix (LbH) domain, and a C-terminal alpha-helical extension. The LbH domain contains 9 turns, each containing three imperfect tandem repeats of a hexapeptide repeat motif (X-[STAV]-X-[LIV]-[GAED]-X).

Probab=100.00 E-value=2.3e-37 Score=231.05 Aligned_cols=170 Identities=29% Similarity=0.430 Sum_probs=140.6 Q ss_pred EECCCEEEEEEEEECCCCCEECCCCCCCCCCCCEEEECCCCCCC-CCCCCCCCCCCCCCCCCCC---------------- Q ss_conf 21152799411233178410012232234420002111631343-3212111210021344320---------------- Q gi|254780942|r 257 IAPETVFLSHDTIIQPDTVIEPHVFFGCGVSIENYVQIRAFSYL-EGVHIGKKTIIGPFARIRQ---------------- 319 (442) Q Consensus 257 ~~p~~~~i~~~~~I~~~~~I~~~~~Ig~~~~Ig~~~~I~~~~~i-~~~~Ig~~~~Ig~~~~i~~---------------- 319 (442) T Consensus 10 I~~-~avI~~~v~Ig~n~~I~~~~~I~~~v~IG~~~~I~~~~~I~~~~~IG~~~~I~~~~vIg~~~f~~~~~~~~~~~~~ 88 (205) T cd03352 10 IGP-NAVIGEGVVIGDGVVIGPGVVIGDGVVIGDDCVIHPNVTIYEGCIIGDRVIIHSGAVIGSDGFGFAPDGGGWVKIP 88 (205) T ss_pred ECC-CCEECCCCEECCCCEECCCCEECCCCEECCCCEEECCCEECCCCEECCEEEECCCEEECCCCCCCCCCCCCCEECC T ss_conf 999-8799999999999999898899999688988366003447278687544777153486213532314798404514 Q ss_pred ---CEEECCCCCCCCEEEEE-----CCCCCCCCCCCCCCCCCCCEECCCCEECCCEEECCCCCCCCCCCEECCCCEECCC Q ss_conf ---00002586443202310-----2112478544874555663988998997980883445775456298788798869 Q gi|254780942|r 320 ---ETTIEKNVRIGNFCEVK-----KATIKEGSKINHLSYVGDSVVGKNVNIGAGTITCNYDGTHKYKTHINENAFIGSN 391 (442) Q Consensus 320 ---~s~i~~~~~Ig~~~ei~-----~s~i~~g~~i~~~~~igd~~iG~~~~ig~g~i~~n~~g~~~~~~~ig~~~~iG~~ 391 (442) T Consensus 89 ~~g~v~Ig~~v~Ig~~~~I~~g~~~~T~IG~~~~i~~~v-----~igh~~~iG~~~~i~~~~~~~g-~~~Igd~~~iG~~ 162 (205) T cd03352 89 QLGGVIIGDDVEIGANTTIDRGALGDTVIGDGTKIDNLV-----QIAHNVRIGENCLIAAQVGIAG-STTIGDNVIIGGQ 162 (205) T ss_pred CCCCEEECCCEEECCCCEECCCCCCCCCCCCCCEECCCC-----CCCCCCCCCCCEEECCCCCCCC-CEEECCCCEECCC T ss_conf 213189848849888627636642677478776864545-----2556404158707503200026-5249743539896 Q ss_pred CEEECCEEECCCCEECCCCEECCCCCCCCEEEECCCEEEECC Q ss_conf 989378398899899778357664369868981356077077 Q gi|254780942|r 392 SSLIAPITIGQGTYVASGSIITQDTPENSLVFARSRQIVKED 433 (442) Q Consensus 392 ~~i~~gv~ig~~~~i~ag~~v~~dv~~~~~v~~~~~~~~~~~ 433 (442) T Consensus 163 s~i~~gv~IG~~a~VgagSvVtkdVp~~~iv~G~PAr~ir~~ 204 (205) T cd03352 163 VGIAGHLTIGDGVVIGAGSGVTSIVPPGEYVSGTPAQPHREW 204 (205) T ss_pred CEECCCCEECCCCEECCCCEECCCCCCCCEEEEEECCHHHHH T ss_conf 488299399999899868879648699969997628435641

HHsearch alignment for GI: 254780942 and conserved domain: cd03352