>TIGR01173 glmU UDP-N-acetylglucosamine pyrophosphorylase; InterPro: IPR005882 N-Acetylglucosamine-1-PO(4) uridyltransferase (GlmU, 2.7.7.23 from EC) is a trimeric bifunctional enzyme that catalyzes the last two sequential reactions in the de novo biosynthetic pathway for UDP-GlcNAc. The X-ray crystal structure of Escherichia coli GlmU in complex with UDP-GlcNAc and CoA has been determined to 2.1 A resolution and reveals a two-domain architecture that is responsible for these two reactions . The C-terminal domain is responsible for the CoA-dependent acetylation of Glc-1-PO(4) to GlcNAc-1-PO(4) and displays the longest left-handed parallel beta-helix observed to date. The acetyltransferase active site defined by the binding site for CoA makes use of residues from all three subunits and is positioned beneath an open cavity large enough to accommodate the Glc-1-PO(4) acetyl acceptor. The N-terminal domain catalyzes uridyl transfer from UTP to GlcNAc-1-PO(4) to form the final products UDP-GlcNAc and pyrophosphate. This domain is composed of a central seven-stranded beta-sheet surrounded by six alpha-helices in a Rossmann fold-like topology. ; GO: 0003977 UDP-N-acetylglucosamine diphosphorylase activity, 0009103 lipopolysaccharide biosynthetic process.

Probab=100.00 E-value=1.8e-42 Score=281.28 Aligned_cols=235 Identities=21% Similarity=0.297 Sum_probs=181.1 Q ss_pred EEEEECCCCCCCCCHHHCCCCCCEEEECCEEHHHHHHHHHHHCCCCEEEEECCCCCCCCHHHCCCCHHHHHHHHHCCCCE Q ss_conf 89995688883343244088833356883627999999999789988999813554441010011745444565418700 Q gi|254780365|r 9 KAVFPIAGLGMRFFPISKVIPKEMLAIVDRPVIQYVIEEALEAGLTDFVFVTGRGKGLIKDYFDIQFELEQSLRKRNKKA 88 (299) Q Consensus 9 KavIlAaG~GtRl~P~T~~~pKpllpi~~kpiI~~~i~~l~~~Gi~~i~iv~~~~k~~I~~~f~~~~~~~~~l~~~~~~~ 88 (299) T Consensus 2 ~~vILAAGkGTRMk---S~lPKVLH~laGkpMl~hVi~~A~~L~~~~i~vV~GH~~~~V~~~l~~~-------------- 64 (461) T TIGR01173 2 SVVILAAGKGTRMK---SKLPKVLHPLAGKPMLEHVIDAARKLSPEKIHVVLGHGAEQVRKALAEE-------------- 64 (461) T ss_pred EEEEEECCCCCCCC---CCCCCCCCHHHCCCHHHHHHHHHHCCCCCCEEEEECCCHHHHHHHHHCC-------------- T ss_conf 38998068883111---3868601201032278999999853783415999816869999985037-------------- Q ss_pred EECCCCCCCCCCCEEEECCCCCCCC-CCCCCCCCCCCCC---CCCCCCCCCCCCCCCCCCCCCCC-CCCCCCCC-CCCCE Q ss_conf 0011344112485799843334233-4665421101122---33331112786444544332211-22212234-32200 Q gi|254780365|r 89 ELTLLAESIPSIGNAVFTWQYERKG-LGHAVWCARNIIG---DNPFALLLPDMIMSPLEGENCMA-NMIKLYEK-EGANI 162 (299) Q Consensus 89 ~~~~~~~~~~~~~~i~~v~Q~~p~G-tg~Ai~~a~~~i~---de~flv~~gD~i~~~~~~~~~l~-~li~~~~~-~~~~v 162 (299) T Consensus 65 ----------~d~t~~~v~Q~~qlGGTGHAv~~a~~~l~~~~~~~vLvLyGDv---PLi~~eTL~m~Ll~~~~~~~~~~~ 131 (461) T TIGR01173 65 ----------NDKTVNWVLQAEQLGGTGHAVLQALPFLSEDDDGRVLVLYGDV---PLISAETLEMRLLESHRQLNGAKV 131 (461) T ss_pred ----------CCCEEEEEEECCCCCCHHHHHHHHCCCCCCCCCCEEEEEECCC---CCCCHHHHHHHHHHHHHCCCCCCE T ss_conf ----------9967999996889787289998711678886686089995887---877567787798886300010451 Q ss_pred -EEEEECCHHHCCCCCCEECCCCCCCCCCEEEEECCCCCCCCCCC--CEEECHHHEECHH-HHHHHCCCCCCCCCCCCCH Q ss_conf -11243285443313310013333335300000025778886734--2330202002723-3110001226667675003 Q gi|254780365|r 163 -LAVSECDPQLSCKYGMVQVGKAIDHQVFHISDMIEKPDSSTFIS--NFFINGRYILHPD-IFSILNDWKENEGKGEIQL 238 (299) Q Consensus 163 -i~~~~v~~~~~~~yGvi~~~~~~~~~~~~I~~~vEKP~~~~~~S--nl~~~GiYi~~~~-i~~~L~~~~~~~~~gE~~l 238 (299) T Consensus 132 tlLt~~--l~DP~GYGRI~r~~-----~g~V~~IVE~KDA~~eqk~I~eiNtG~y~~~~~~L~~~L~~l~n~NaqgEYYL 204 (461) T TIGR01173 132 TLLTAK--LEDPTGYGRIIREN-----DGAVQAIVEEKDANEEQKAIKEINTGVYVFDGAALKRWLPKLSNNNAQGEYYL 204 (461) T ss_pred EEEEEE--ECCCCCCCEEEECC-----CCCEEEEECCCCCCHHHHCCCEEEEEEEEECHHHHHHHHHHHCCCCCCCCCCH T ss_conf 799987--18889543589848-----99589997335988698035278887999832899988876287704443147 Q ss_pred HHHHHHHHHCC-CEEEEEEEEEEEECCCHHHHHHHHHHHHHCC Q ss_conf 78999998319-8489998137864399889999999986318 Q gi|254780365|r 239 TDSMRKLSERH-DFLAYHFKGHTYDCGSKKGFVLANIAFALAR 280 (299) Q Consensus 239 tD~i~~l~~~~-~v~a~~~~g~w~DiG~~~~yl~A~~~~al~~ 280 (299) T Consensus 205 TD~ia~a~~~g~~v~~~~~~d~~E~~GvNdR~qLa~lE~~~q~ 247 (461) T TIGR01173 205 TDVIALAVADGEEVRAVQVDDSEEVLGVNDRLQLAQLERILQR 247 (461) T ss_pred HHHHHHHHCCCCEEEEEEECCHHHHCCCCCHHHHHHHHHHHHH T ss_conf 8999998508947899980875983366798899999999999

HHsearch alignment for GI: 254780365 and conserved domain: TIGR01173