>TIGR01087 murD UDP-N-acetylmuramoylalanine--D-glutamate ligase; InterPro: IPR005762 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 UDP-N-acetylmuramoylalanine-D-glutamate ligase (MurD). MurD catalyses the addition of d-glutamate to the nucleotide precursor UDP-N-acetylmuramoyl-l-alanine. ; GO: 0005524 ATP binding, 0008764 UDP-N-acetylmuramoylalanine-D-glutamate 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=368.33 Aligned_cols=326 Identities=24% Similarity=0.277 Sum_probs=246.9 Q ss_pred CCCEEEEECCCCCCHHHHHHHHHHHHHHCCCCCHHHHHCCCCCC-CHHCCCCCCCHHHHHCCCCCCCCCCCCCCCCCC-- Q ss_conf 99399983036542012334677775201122212211014574-100012322144430156644332112122323-- Q gi|254781101|r 107 KATIIAITGSVGKTTTKEMLTIALSSIKKTYACIGSYNNHIGVP-LTLARMPVDVDFGIFELGMSHLGEIRFLTHLVR-- 183 (472) Q Consensus 107 ~~~vI~ITGTnGKTTt~~~l~~iL~~~~~~~~t~gn~Nn~iGvp-ltll~~~~~~~~~V~E~g~~~~gei~~L~~i~~-- 183 (472) T Consensus 109 ~~~~~aITGTnGKtTTT~L~~~~L~~~G~~a~~gGN----IG~p~L~~~~~-~~~~~~VlElSSFQ---L~~~~-~~~p~ 179 (476) T TIGR01087 109 PAKVVAITGTNGKTTTTSLLYHLLKAAGLKAVLGGN----IGTPALEVLDQ-EGAELYVLELSSFQ---LETTE-SLRPA 179 (476) T ss_pred CCCEEEEECCCCHHHHHHHHHHHHHHCCCCEEEECC----CCCHHHHHHCC-CCCCEEEEEECCHH---HCCCC-CCCCC T ss_conf 873799972686079999999999846997786257----88125553105-88966999700032---04575-55665 Q ss_pred CCEEEEEEECCCHHHHHHHHHHHHHHHHHHCCCCCCCCHHHHCCC---CHHHHHHHHHCCCCCCCCCCCCCCCC---CCC Q ss_conf 220255531210123444578888654331037622101210134---24689987520123333322222222---222 Q gi|254781101|r 184 PHIAVITTIAPAHLSNFSGIEEIASAKAEIFEGLEKTGTIFLNYD---DSFFELLKAKSHALGIKTIYSFGKSK---NAD 257 (472) Q Consensus 184 P~iaiiTNI~~dHld~~~s~e~i~~~K~~i~~~l~~~g~~ViN~D---d~~~~~l~~~~~~~~~~~i~~~g~~~---~ad 257 (472) T Consensus 180 p~i~~~lNi~~DHLD~h~~~~~Y~~aK~~i~~~~~~~d~~v~n~d~~~~~~~~~~~~~~~---~-~~~~~~~~~CP~~~~ 255 (476) T TIGR01087 180 PEIALILNISEDHLDWHGSFEDYVAAKLKIFARQTEGDVAVLNADQAYDPRFTRLEKKSK---A-QVVLFSVEKCPAEAE 255 (476) T ss_pred CEEEEEECCCHHHHCCCCCHHHHHHHHHHHHCCCCCCCEEEEECCCCCCCHHHHCCCCCC---C-EEEEECCCCCCHHHH T ss_conf 124687066356301107988999998898525998767988120025504652124675---3-078740445808899 Q ss_pred CCCCCCCCCCCCCCCCCCCC--------CCCCCCCCCCCCCCCCCCCCCHHHHHHHHCCC----CHHHHHHHHCCCCCCC Q ss_conf 22344211346510012456--------54322122222222333322103567651012----1034554311476644 Q gi|254781101|r 258 FQLRKWKQCSEQSWMEVQLQ--------GKSMEVVHHGIGYHMAQNMLMTLGIVSILTAD----VDTAIKALSVFHPKEG 325 (472) Q Consensus 258 ~~~~~i~~~~~~~~~~~~~~--------~~~~~~~l~~~G~hnv~NalaAia~~~~lGi~----~~~i~~~L~~~~~~~G 325 (472) T Consensus 256 ~~l---~~~~~~~~l~~~~e~~~~C~~~~~~~~~~~~l~g~h~~~n~laa~ala~~~g~~~~~~~~~~~~~l~~F~~~~H 332 (476) T TIGR01087 256 QGL---EIRDGKEYLKPNDENDFACDDLTILPCEELKLLGLHNAENILAAIALAKSLGLNSDEELEAILEALRSFKGLPH 332 (476) T ss_pred HHH---HHCCCCEEECCCCCCCCCHHHHHHHHHCCCCCCCHHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHCCCCCC T ss_conf 764---12388526336787630000112433215676788899999999999998288976016899999984579876 Q ss_pred CCCCCEECCCCCCEEEEEECCCCCCCCHHHHHHHHHHHHHCCCCCCEEEECCHHHCCCCHHHHHHHHHHHHHHCCCCEEE Q ss_conf 33101000365311331000256532101257778741110268713885123541710589999999999864998999 Q gi|254781101|r 326 RGKRYRCALNQGFFTLIDESYNANPASMKAAISVLSQISPHGEGRRIAVLGDMCEMGELSQSFHIDLAEVLSLYNISHVW 405 (472) Q Consensus 326 R~~~~~~~~~~~~~~iIDDsYNAnP~S~~aal~~l~~~~~~~~~r~i~VlG~m~ELG~~~~~~h~~i~~~~~~~~~d~v~ 405 (472) T Consensus 333 RlE~---~~~~~G~~f~NDSKATn~~At~~AL~~~~~-----~~~~~LI~GG~-----~KG~df~~L~~~~~~~-~~~~~ 398 (476) T TIGR01087 333 RLEY---VGQKNGVHFINDSKATNVHATLAALSALKN-----PKRVILIVGGD-----DKGADFSPLAPALKKK-VKAVL 398 (476) T ss_pred CEEE---EEECCCEEEEECCCCCCHHHHHHHHHHCCC-----CCEEEEEEECC-----CCCCCHHHHHHHHCCC-EEEEE T ss_conf 2688---777285479825621218999999984799-----97189996034-----6899848999984365-07999 Q ss_pred EECCCHHHHHHHCCCCCCEE------EECCHHHHHHHHHHHCCCC--CEEEE---ECC---------CHHHHHHHHH Q ss_conf 98803898998511379799------9789899999999844789--89999---771---------3254899999 Q gi|254781101|r 406 LSGFHVLALKDALPRSIHVH------YSETMDGLFLFIQSSLVDG--DVVVV---KSS---------NSCGFYRLIN 462 (472) Q Consensus 406 ~~G~~~~~~~~~~~~~~~~~------~~~~~e~a~~~l~~~~~~g--diVLi---KGS---------r~~~le~iv~ 462 (472) T Consensus 399 ~~G~~~~~~~~~l~~~~~~~~~~~~~~~~~l~~Av~~a~~~~~~g~~d~vLLSPacASFDqF~~y~eRGe~F~~~v~ 475 (476) T TIGR01087 399 AIGEDAAKIAKLLKEIGLVVKYGEETLVESLEEAVQAAREVAKEGNADVVLLSPACASFDQFKSYEERGEKFKELVR 475 (476) T ss_pred EECCCHHHHHHHHHHCCCCCCCCCCHHHHHHHHHHHHHHHHHCCCCCCEEEECCCCCCHHHHCCHHHHHHHHHHHHH T ss_conf 85354789999863427643546530577899999999997127997679888641217773038888899999981

HHsearch alignment for GI: 254781101 and conserved domain: TIGR01087