>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=997.12 Aligned_cols=463 Identities=39% Similarity=0.599 Sum_probs=423.2 Q ss_pred CCCEEEEEECCCCCCCCCEEEEECCCCCCHHHHHHHHHHCCCEEEEECCCCCCCCCCCCCCCCCCEEEECCH-HHHHHHH Q ss_conf 743002453023146898899803887676888999998598899984732233343223479709997998-9999999 Q gi|254781102|r 27 ERKINEVSSDSRHIQAGWIFVAIVGNKEDGHLFIPQAIAQGAEAIVVSSAYSLQDFSATIRSNTPILVVDNT-RKFLSLF 105 (497) Q Consensus 27 d~~i~~i~~DSr~v~~g~lFval~G~~~dGh~fi~~A~~~GA~~~i~~~~~~~~~~~~~~~~~~p~i~V~d~-~~aL~~l 105 (497) T Consensus 1 ~~~~~~l~~~S~~V~~G~~F~A~~G~~~DG~~fi~~A~~~GA~aVv~e~~~~-~~---~~~~~V~~i~~~d~~r~~~~~~ 76 (494) T TIGR01085 1 DLEVTGLTLDSREVKPGDLFVAIKGTKVDGHDFIEEAIENGAVAVVVEREVD-YV---AGRAGVPVIIVPDLKRHALSSL 76 (494) T ss_pred CCEEECCCCCHHHCCCCCEEEEECCCCCCHHHHHHHHHHCCCEEEEECCCCC-CC---CCCCCCEEEEECCHHHHHHHHH T ss_conf 9603110013001279967897125655848889999872988999806011-27---6434610799623135888999 Q ss_pred HHHHHCCCCC--CEEEEEEEECCCEEHHHHHHHHHHCCCCCCCCCCCCCCCC-CCC---CCCCCCCCHHHHHHHHHHHCC Q ss_conf 9998276200--2245654306520001233333210232222234544332-355---445767531221111111011 Q gi|254781102|r 106 ASRLYGKHPE--NILAVTGTSGKSSVASFVQQICQRSGLSSFQIGPTSTISS-FAQ---DNRLTTPSPIYLAKALSYLSS 179 (497) Q Consensus 106 a~~~~~~~~~--~vIgITGTnGKTTt~~~l~~iL~~~g~~~~~~g~~~~~~~-~~~---~~~~TtP~~~~l~~~l~~~~~ 179 (497) T Consensus 77 A~~fY~~Ps~~l~viGvTGTNGKTtt~~li~~~l~~~G~~tgliGT~g~~~~g~~~~~~~~~~TTP~~~~~q~~L~~~~~ 156 (494) T TIGR01085 77 AAAFYGHPSKKLKVIGVTGTNGKTTTTSLIAQLLELLGKKTGLIGTIGYRLGGNELIKDPASLTTPEALTLQKTLAEMVE 156 (494) T ss_pred HHHHHCCCCCCEEEEEEEECCCCHHHHHHHHHHHHHCCCEEEEEEEEEEECCCCCCCCCCCCCCCCCCHHHHHHHHHHHH T ss_conf 99973485525168999712874489999999998679708998654530477631266555679971899999999996 Q ss_pred CCCCCCCCCCCHHHHHHH--HHCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHHCCCC-----CCCCCCCCCCCC Q ss_conf 223333356676665554--3104321211123215455432110112234554210000001-----223211125420 Q gi|254781102|r 180 QGVTHVSVEASSHGLDQH--RLDGIKLIAGSFTNLGRDHIDYHQTQQAYFNAKMRLFEELLPK-----ESPAIIYADDAY 252 (497) Q Consensus 180 ~g~~~~vlEvSS~gl~~~--rl~~i~~diaviTNI~~dHLd~~gs~e~y~~aK~~If~~~~~~-----~~~~ViN~Dd~~ 252 (497) T Consensus 157 ~g~~~~v~EvSSHaL~q~TARV~~~~F~~~vFTNl~~DHLDfHgtmEnY~~aK~~LF~~~~~~~~~~~~~~aV~n~dD~~ 236 (494) T TIGR01085 157 AGAQYAVMEVSSHALAQGTARVEGVDFDAAVFTNLTRDHLDFHGTMENYFAAKAKLFTELGLKSDRRRARFAVINLDDEY 236 (494) T ss_pred CCCCEEEEEEEHHHHHCCCCEEECCEEEEEEEECCCHHHHHHCCCHHHHHHHHHHCCCCCCCCCCCCCCCCEEEEECCHH T ss_conf 59979999863012421421110211579996078830234033489999999852440013677535661158864544 Q ss_pred HHHHHHHCCCCCCCCCCCC-----CCCCCCCCCEECCCCCCCCCCCCCCCC-EEECCCCCCCCCCCCHHHHHHHHHHHCC Q ss_conf 0012221023565322222-----333322000000145444321122210-0101223433222110577888775202 Q gi|254781102|r 253 SKEVMKRAHNAGCRVLSVG-----YQGKFIHLKKVCAIHNKQQVTISVEGK-DFDFLFPLPGEFQVYNALVAAGLCIAIG 326 (497) Q Consensus 253 ~~~l~~~~~~~~~~~~~~g-----~~~~~~~~~~~~~~~~~~~~~i~~~~~-~~~~~l~l~G~hni~NalaAia~a~~lG 326 (497) T Consensus 237 ~~~f~~~~~~~~~~~~~~~~A~~R~~~~~~~~~~~~~~~~G~~~~~~~~~g~~~~~~~~LiG~FNv~N~lAa~a~~~~~g 316 (494) T TIGR01085 237 GAQFVKRLPKDITVSAITQKADWRGKAQDIKITDSGYSFEGQSFTFETPAGVEFKLHTPLIGRFNVYNLLAALATLLHLG 316 (494) T ss_pred HHHHHHHHHHHCEEEEEEECCCCCCCCCCCHHHCCCCEEEEEEEEEECCCCCEEEEEECCCHHHHHHHHHHHHHHHHHHC T ss_conf 69998610252257788504212631124011000010345666752467520688753613688999999999999733 Q ss_pred -CCHHHHHHHHHHHHHHHHHHCCCCCCCCCCEEEECCCCCHHHHHHHHHHHH----HCCCCCCCEEEECCCCCCCCHHHH Q ss_conf -676763111234433455210001355786023000378689999741211----002344403540266546004689 Q gi|254781102|r 327 -IDSALVLEHLEKLHVVPGRFEFVGTNSRGGRIYVDYAHTSNSLEMILKNIR----TITSGRIIVVFGCGGDRDQGKRPI 401 (497) Q Consensus 327 -i~~~~i~~~L~~f~~~~gR~E~i~~~~~~~~viiDyahNP~s~~~aL~~l~----~~~~~r~i~V~G~~Gdrd~~kr~~ 401 (497) T Consensus 317 g~~~~~~~~~l~~~~gv~GRmE~v~~~~~~f~V~VDYAHTPDaLek~L~~lr~~~~~~~~g~L~~vFGcGGdRDr~KRpl 396 (494) T TIGR01085 317 GIDLEDIVAALEKLRGVPGRMELVDGGQQKFLVIVDYAHTPDALEKVLRTLRAIKLKHKKGRLIVVFGCGGDRDRGKRPL 396 (494) T ss_pred CCCHHHHHHHHHHCCCCCCCCEEECCCCCCCEEEEEECCCHHHHHHHHHHHHHHHHHCCCCCEEEEEECCCCCCCCCCHH T ss_conf 88899999898734899873123027899960799714880589999999999984258982799981578998445758 Q ss_pred HHHHHHHHCCEEEECCCCCCCCCHHHHHHHHHHCCCC------EEEECCHHHHHHHHHHHCCCCCEEEEECCCCCCCEEE Q ss_conf 9999986198999908879898989999999834798------0997898999999999658988999944688663584 Q gi|254781102|r 402 MGKIALDLADIAIVTDDNPRSEDPEKIRAEIIHGIPG------FIEKGNRIEAIRTAIEMLNKQDVLVVAGKGHETVHIV 475 (497) Q Consensus 402 mg~~a~~~ad~vi~t~d~~r~e~~~~I~~~i~~g~~~------~~~~~dr~eAi~~A~~~a~~gDvili~GkG~e~~~~~ 475 (497) T Consensus 397 MG~iA~~~AD~~ilT~DNPR~Edp~~I~~Di~~G~~~~~~~~~~~~i~DR~~AI~~Ai~~A~~gD~VLiAGKGHE~yQi~ 476 (494) T TIGR01085 397 MGAIAEQLADLIILTSDNPRSEDPEQIIADILAGISEKEKDKDVVIIADRRQAIRKAISNAKAGDVVLIAGKGHEDYQII 476 (494) T ss_pred HHHHHHHHCCEEEEECCCCCCCCHHHHHHHHHHHCCCCCCCCCEEEEHHHHHHHHHHHHHHCCCCEEEEECCCCCCCEEE T ss_conf 99999982986898368854579799999999714776667515896017899999998404798899961577522565 Q ss_pred CCCEECCCCHHHHHHHHHH Q ss_conf 4978867998999999844 Q gi|254781102|r 476 TNGEKKMSVDCDIIREILG 494 (497) Q Consensus 476 ~~~~~~~~~d~~~~~~~l~ 494 (497) T Consensus 477 ~~-~~~~FdD~Evv~~al~ 494 (494) T TIGR01085 477 GN-EKIPFDDREVVKEALA 494 (494) T ss_pred CC-EEECCCHHHHHHHHCC T ss_conf 67-4770187999999809

HHsearch alignment for GI: 254781102 and conserved domain: TIGR01085