>TIGR01085 murE UDP-N-acetylmuramyl-tripeptide synthetases; InterPro: IPR005761 The bacterial cell wall provides strength and rigidity to counteract internal osmotic pressure, and protection against the environment. The peptidoglycan layer gives the cell wall its strength, and helps maintain the overall shape of the cell. The basic peptidoglycan structure of both Gram-positive and Gram-negative bacteria is comprised of a sheet of glycan chains connected by short cross-linking polypeptides. Biosynthesis of peptidoglycan is a multi-step (11-12 steps) process comprising three main stages: (1) formation of UDP-N-acetylmuramic acid (UDPMurNAc) from N-acetylglucosamine (GlcNAc). (2) addition of a short polypeptide chain to the UDPMurNAc. (3) addition of a second GlcNAc to the disaccharide-pentapeptide building block and transport of this unit through the cytoplasmic membrane and incorporation into the growing peptidoglycan layer. Stage two involves four key Mur ligase enzymes: MurC (6.3.2.8 from EC) , MurD (6.3.2.9 from EC) , MurE (6.3.2.13 from EC) and MurF (6.3.2.10 from EC) . These four Mur ligases are responsible for the successive additions of L-alanine, D-glutamate, meso-diaminopimelate or L-lysine, and D-alanyl-D-alanine to UDP-N-acetylmuramic acid. All four Mur ligases are topologically similar to one another, even though they display low sequence identity. They are each composed of three domains: an N-terminal Rossmann-fold domain responsible for binding the UDPMurNAc substrate; a central domain (similar to ATP-binding domains of several ATPases and GTPases); and a C-terminal domain (similar to dihydrofolate reductase fold) that appears to be associated with binding the incoming amino acid. The conserved sequence motifs found in the four Mur enzymes also map to other members of the Mur ligase family, including folylpolyglutamate synthetase, cyanophycin synthetase and the capB enzyme from Bacillales . This entry represents DP-N-acetylmuramoylalanyl-D-glutamate-2,6-diaminopimelate ligases (MurE; 6.3.2.13 from EC). An exception is found with Staphylococcus aureus, in which diaminopimelate is replaced by lysine in the peptidoglycan and MurE is (6.3.2.7 from EC). The Mycobacteria, part of the closest neighbouring branch outside of the low-GC Gram-positive bacteria, use diaminopimelate.; GO: 0005524 ATP binding, 0016881 acid-amino acid ligase activity, 0008360 regulation of cell shape, 0009252 peptidoglycan biosynthetic process, 0009273 peptidoglycan-based cell wall biogenesis, 0051301 cell division, 0005737 cytoplasm.

Probab=100.00 E-value=0 Score=424.22 Aligned_cols=362 Identities=20% Similarity=0.256 Sum_probs=259.4 Q ss_pred HHHHHHHHHHC-CCHHHHCCCEEEEECCCCHHHHHHHHHHHHHHCCCCEEEEECCCCCEEEEEEEECCCCCCCEECCHHH Q ss_conf 89999999872-99588359839994589847999999999999789351413784110120089888477871558899 Q gi|254780821|r 6 LLKMGYLLEDL-GRPQDRLPPVIHIGGTNGKGSVASFSQRLLETSGLSVHVHTSPHLIRWNERFRLGVKGGRGRLVEDVE 84 (429) Q Consensus 6 l~r~~~ll~~l-g~P~~~~~~vI~VtGTnGKttt~~~i~~il~~~g~k~g~~tSPhl~~~~Eri~i~~~~~~g~~i~~~~ 84 (429) T Consensus 70 r~~~~~~A~~fY~~Ps~~l-~viGvTGTNGKTtt~~li~~~l~~~G~~tgliGT-----------~g~~~~g~~~~~--- 134 (494) T TIGR01085 70 RHALSSLAAAFYGHPSKKL-KVIGVTGTNGKTTTTSLIAQLLELLGKKTGLIGT-----------IGYRLGGNELIK--- 134 (494) T ss_pred HHHHHHHHHHHHCCCCCCE-EEEEEEECCCCHHHHHHHHHHHHHCCCEEEEEEE-----------EEEECCCCCCCC--- T ss_conf 5888999999734855251-6899971287448999999999867970899865-----------453047763126--- Q ss_pred HHHHHHHHHHCCCCCCCCHHHHHHH-HHHHHHHCCCCCHHHHHH---HHH-H--HHHHHCCCCCCCEEEEEECCCHHCCC Q ss_conf 9999999863047767795789999-999874114462477764---447-5--67641356775158986025000000 Q gi|254780821|r 85 LLDVFRRVRRVKSAQNLTIFELSIA-TALVLFSKYPADCAIIEV---GLG-G--SLDATNIIEKVAVSVITSISLDHEKI 157 (429) Q Consensus 85 ~~~~~~~i~~~~~~~~~t~FE~lt~-~a~~~f~~~~~d~~vlE~---GlG-G--r~DaTnvi~~~~vavITnI~~DHle~ 157 (429) T Consensus 135 ------------~~~~~TTP~~~~~q~~L~~~~~~g~~~~v~EvSSHaL~q~TARV~~~~----F~~~vFTNl~~DHLDf 198 (494) T TIGR01085 135 ------------DPASLTTPEALTLQKTLAEMVEAGAQYAVMEVSSHALAQGTARVEGVD----FDAAVFTNLTRDHLDF 198 (494) T ss_pred ------------CCCCCCCCCCHHHHHHHHHHHHCCCCEEEEEEEHHHHHCCCCEEECCE----EEEEEEECCCHHHHHH T ss_conf ------------655567997189999999999659979999863012421421110211----5799960788302340 Q ss_pred CCCCHHHHHHHHHHHCCC-C--------CCCCCCCCCCHHHHHHHHHHHHHCCCCCCCCCCC-------CCCCCCC---- Q ss_conf 278523445666531137-9--------8331544471789889999862105665235763-------2101258---- Q gi|254780821|r 158 LGNTVSAIAKDKSGIIKP-G--------CPVVIGHQVYDEVREILVSKAEKMGCPYNVYGDD-------FYAFEKN---- 217 (429) Q Consensus 158 LG~tle~Ia~eKa~I~k~-~--------~~~v~~~~~~~~~~~~i~~~a~~~~~~~~~~~~~-------~~~~~~~---- 217 (429) T Consensus 199 Hg-tmEnY~~aK~~LF~~~~~~~~~~~~~~aV~n~d-D~~~~~f~~~~~~~~~~~~~~~~A~~R~~~~~~~~~~~~~~~~ 276 (494) T TIGR01085 199 HG-TMENYFAAKAKLFTELGLKSDRRRARFAVINLD-DEYGAQFVKRLPKDITVSAITQKADWRGKAQDIKITDSGYSFE 276 (494) T ss_pred CC-CHHHHHHHHHHCCCCCCCCCCCCCCCCEEEEEC-CHHHHHHHHHHHHHCEEEEEEECCCCCCCCCCCHHHCCCCEEE T ss_conf 33-489999999852440013677535661158864-5446999861025225778850421263112401100001034 Q ss_pred -CEEEEEECCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHCCHHHHCCCCCCCCC-CCCCEEEEECCCCCCCCCCCCEE Q ss_conf -5244431033334444443222211111469999875320000110011222233-66530354228754445787459 Q gi|254780821|r 218 -KCLVYQDKISQTNLTVLGLVGEHQYINAATAICAVQMAGFTLEKECINAALQSVQ-WFGRLQKITEGPLLNKLPDHSEV 295 (429) Q Consensus 218 -~~~~~~~~~~~~~~~~l~l~G~hn~~Na~~Aiaa~~~lg~~i~~~~I~~gL~~~~-~pGR~e~i~~~~~~~~~~~~~~v 295 (429) T Consensus 277 G~~~~~~~~~g~~~~~~~~LiG~FNv~N~lAa~a~~~~~g-g~~~~~~~~~l~~~~gv~GRmE~v~~~~------~~f~V 349 (494) T TIGR01085 277 GQSFTFETPAGVEFKLHTPLIGRFNVYNLLAALATLLHLG-GIDLEDIVAALEKLRGVPGRMELVDGGQ------QKFLV 349 (494) T ss_pred EEEEEEECCCCCEEEEEECCCHHHHHHHHHHHHHHHHHHC-CCCHHHHHHHHHHCCCCCCCCEEECCCC------CCCEE T ss_conf 5666752467520688753613688999999999999733-8889999989873489987312302789------99607 Q ss_pred EEECCCCHHHHHHHHHHHHHHC-CCCCCCEEEEECCCCCCCHH---HHHHHHHHHCCEEEEEEECCCCCCCCCCCCCHHH Q ss_conf 9933632157998886543311-47777124311346798989---9999888638889998422889984212789899 Q gi|254780821|r 296 WIDGGHNPNAGLVVSKEISKLK-GSSNKPFYLVIGMVEGKKYG---RYLEAFVELSPIVLSVSLICRGRERQSISITPKV 371 (429) Q Consensus 296 iiD~AHNp~s~~~l~~~l~~l~-~~~~~~i~~I~G~~~dKd~~---~~l~~l~~~~d~i~~~~~~~~~~~~~~~~~~~~~ 371 (429) T Consensus 350 ~VDYAHTPDaLek~L~~lr~~~~~~~~g~L~~vFGcGGdRDr~KRplMG~iA~~~AD~~ilT~DNPR~Edp~~I---~~D 426 (494) T TIGR01085 350 IVDYAHTPDALEKVLRTLRAIKLKHKKGRLIVVFGCGGDRDRGKRPLMGAIAEQLADLIILTSDNPRSEDPEQI---IAD 426 (494) T ss_pred EEEECCCHHHHHHHHHHHHHHHHHCCCCCEEEEEECCCCCCCCCCHHHHHHHHHHCCEEEEECCCCCCCCHHHH---HHH T ss_conf 99714880589999999999984258982799981578998445758999999829868983688545797999---999 Q ss_pred HHHHHHHCC--CCEEEECCHHHHHHHHHHHCCCCCCCEEEEEC Q ss_conf 999998549--97899699899999999860358867999949 Q gi|254780821|r 372 LMQEAKKLG--FQAMACSSMIEALSRVRKINEELPPPLILIAG 412 (429) Q Consensus 372 l~~~~~~~~--~~~~~~~~~~eAi~~a~~~~~~~~~d~VLV~G 412 (429) T Consensus 427 i~~G~~~~~~~~~~~~i~DR~~AI~~Ai~~A--~~gD~VLiAG 467 (494) T TIGR01085 427 ILAGISEKEKDKDVVIIADRRQAIRKAISNA--KAGDVVLIAG 467 (494) T ss_pred HHHHCCCCCCCCCEEEEHHHHHHHHHHHHHH--CCCCEEEEEC T ss_conf 9971477666751589601789999999840--4798899961

HHsearch alignment for GI: 254780821 and conserved domain: TIGR01085