>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=404.59 Aligned_cols=314 Identities=21% Similarity=0.279 Sum_probs=230.9 Q ss_pred CCCCCEEEEECCCCCCHHHHHHHHHHHHHHHHCCCCCCCCCCCC-----------------------CCCCCCCCCEEEE Q ss_conf 56886899603457521578999999873100000001244322-----------------------1101688837999 Q gi|254781099|r 110 SLQSPFIAVTGTNGKSSTVALISHVLRKNGYDVQLGGNIGLPIL-----------------------NLEYFSPNRFYVI 166 (468) Q Consensus 110 ~~~~~vI~VTGT~GKTTt~~ll~~iL~~~g~~~~~~GNiG~p~~-----------------------~~~~~~~~~~~V~ 166 (468) T Consensus 85 s~~l~viGvTGTNGKTtt~~li~~~l~~~G~~tgliGT~g~~~~g~~~~~~~~~~TTP~~~~~q~~L~~~~~~g~~~~v~ 164 (494) T TIGR01085 85 SKKLKVIGVTGTNGKTTTTSLIAQLLELLGKKTGLIGTIGYRLGGNELIKDPASLTTPEALTLQKTLAEMVEAGAQYAVM 164 (494) T ss_pred CCCEEEEEEEECCCCHHHHHHHHHHHHHCCCEEEEEEEEEEECCCCCCCCCCCCCCCCCCHHHHHHHHHHHHCCCCEEEE T ss_conf 52516899971287448999999999867970899865453047763126655567997189999999999659979999 Q ss_pred ECCCCCC--C--CCCCCCCCCCEEEEECCCHHHHHHHHHHCCCCCCCEEEE--C-------CCCCCCCCCHHHHHHHHHC Q ss_conf 2177543--2--122333221011100210122211100001122100010--1-------3443224786789998740 Q gi|254781099|r 167 ECSSYQI--E--LTPTIDPSIGVLLNISPDHLDRHHTLENYVNIKKKIVTM--S-------KHAIICINDHQCEKIAYDM 233 (468) Q Consensus 167 E~SSfQL--~--~~~~~~PdiavITNI~~DHLd~~~s~e~y~~aK~~i~~~--~-------~~~iln~dd~~~~~~~~~~ 233 (468) T Consensus 165 EvSSHaL~q~TARV~~~~F~~~vFTNl~~DHLDfHgtmEnY~~aK~~LF~~~~~~~~~~~~~~aV~n~dD~~~~~f~~~~ 244 (494) T TIGR01085 165 EVSSHALAQGTARVEGVDFDAAVFTNLTRDHLDFHGTMENYFAAKAKLFTELGLKSDRRRARFAVINLDDEYGAQFVKRL 244 (494) T ss_pred EEEHHHHHCCCCEEECCEEEEEEEECCCHHHHHHCCCHHHHHHHHHHCCCCCCCCCCCCCCCCEEEEECCHHHHHHHHHH T ss_conf 86301242142111021157999607883023403348999999985244001367753566115886454469998610 Q ss_pred CCCCCEEECCCCCC-------CC-CCCCEEECCCEEEECCCCC-CCCCCCCCCCCHHHHHCCCHHHHHHCCC-CCCCCCH Q ss_conf 12343011036443-------22-2341121241354146764-2123455885101110011012221022-2221100 Q gi|254781099|r 234 NFIGHSISRISSQS-------LQ-SDSDLYIDESFLKCSATSE-VIFDFSQETKKHNIQNLVTSAVVCMQLG-LKVEEIK 303 (468) Q Consensus 234 ~~~~~~~~~~~~~~-------~~-~~~~~~~~~~~~~~~~~~~-~~~~~~~l~G~HNi~NalaAia~a~~lG-i~~~~i~ 303 (468) T Consensus 245 ~~~~~~~~~~~~A~~R~~~~~~~~~~~~~~~~G~~~~~~~~~g~~~~~~~~LiG~FNv~N~lAa~a~~~~~gg~~~~~~~ 324 (494) T TIGR01085 245 PKDITVSAITQKADWRGKAQDIKITDSGYSFEGQSFTFETPAGVEFKLHTPLIGRFNVYNLLAALATLLHLGGIDLEDIV 324 (494) T ss_pred HHHCEEEEEEECCCCCCCCCCCHHHCCCCEEEEEEEEEECCCCCEEEEEECCCHHHHHHHHHHHHHHHHHHCCCCHHHHH T ss_conf 25225778850421263112401100001034566675246752068875361368899999999999973388899999 Q ss_pred HHCCCHHHHHHHHHHHCCCC-CCEEECCCCCCCHHHHHHHHHCCC--------CCCEEE--ECCCCCCCCHHHH-HHHHC Q ss_conf 00000013454433210034-300000235567555555320133--------320012--0321012206898-99842 Q gi|254781099|r 304 RALLSCGGLTHRLQTIARLG-HVIFINDSKATNLHSVIHAFLNEK--------RRIYWI--AGGLSKSDDFSTL-FPFIS 371 (468) Q Consensus 304 ~~L~~f~gv~~R~E~i~~~~-gv~iIDDS~atnp~a~~~Al~~~~--------~~i~lI--~GG~~K~~d~~~L-~~~~~ 371 (468) T Consensus 325 ~~l~~~~gv~GRmE~v~~~~~~f~V~VD-YAHTPDaLek~L~~lr~~~~~~~~g~L~~vFGcGG-dRDr~KRplMG~iA~ 402 (494) T TIGR01085 325 AALEKLRGVPGRMELVDGGQQKFLVIVD-YAHTPDALEKVLRTLRAIKLKHKKGRLIVVFGCGG-DRDRGKRPLMGAIAE 402 (494) T ss_pred HHHHHCCCCCCCCEEECCCCCCCEEEEE-ECCCHHHHHHHHHHHHHHHHHCCCCCEEEEEECCC-CCCCCCCHHHHHHHH T ss_conf 8987348998731230278999607997-14880589999999999984258982799981578-998445758999999 Q ss_pred CCCEEEEE------CCCHHHHHHHH-HCCCCEEE---ECCHHHHHHHHHHHHHHCCCCCEEEEC Q ss_conf 78689998------89989988863-16898899---879999999999999844898599945 Q gi|254781099|r 372 KIAKAYFI------GNSAMLFFHHF-GGKINSTL---SKTLDQALKSVVRDVENVQLPSIVLFS 425 (468) Q Consensus 372 ~~~~~~li------G~~~~~i~~~~-~~~~~~~~---~~~~~~a~~~i~~~~~~~~~gDiVLlS 425 (468) T Consensus 403 ~~AD~~ilT~DNPR~Edp~~I~~Di~~G~~~~~~~~~~~~i~DR~~AI~~Ai~~A~~gD~VLiA 466 (494) T TIGR01085 403 QLADLIILTSDNPRSEDPEQIIADILAGISEKEKDKDVVIIADRRQAIRKAISNAKAGDVVLIA 466 (494) T ss_pred HHCCEEEEECCCCCCCCHHHHHHHHHHHCCCCCCCCCEEEEHHHHHHHHHHHHHHCCCCEEEEE T ss_conf 8298689836885457979999999971477666751589601789999999840479889996

HHsearch alignment for GI: 254781099 and conserved domain: TIGR01085