>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=803.57 Aligned_cols=433 Identities=33% Similarity=0.470 Sum_probs=359.7 Q ss_pred EEEEECCCHHHH--HHHHHHHHCCCEEEEEECCCHHH----HHHHH--CCCEEECC---CCCCCCCCCEEEECCCCCCCC Q ss_conf 799983685489--99999998598699981896478----89997--89899645---315722588899888868567 Q gi|254781099|r 10 SIAVFGLGRSGL--SAACALKDSGVHVIAWDDHPCAV----KQAKD--MGIEVIDF---REIPWSIISFLVLSPGIALTG 78 (468) Q Consensus 10 ~v~i~G~G~sG~--s~A~~l~~~G~~V~~~D~~~~~~----~~l~~--~g~~~~~~---~~~~~~~~d~vv~Spgi~~~~ 78 (468) T Consensus 1 ~i~i~GlG~tG~G~a~a~~L~~~g~~~~~~D~~~~~~~~~~~~~~~~~~~~~l~~~~~~~~~~~~~~d~vv~SPGi~~~- 79 (476) T TIGR01087 1 KILILGLGKTGRGVAVARFLKKKGAEVTVTDDDPEEELERSKGQLKLSEGVVLYTGGKDDLEDLNNADLVVLSPGIPPD- 79 (476) T ss_pred CEEEEEECCCCHHHHHHHHHHHCCCEEEEEECCCCCCCCCHHHHCCCCCCEEEEECCCCCCCCCCCCEEEEECCCCCCC- T ss_conf 9789986751078999999997298799998452213431133124556413532675310123342079978989867- Q ss_pred CCCCHHHHHHHHCCCEEEEEHHHHHHHHHHCCCCCCEEEEECCCCCCHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCC Q ss_conf 55788899999769809983034223343015688689960345752157899999987310000000124432211016 Q gi|254781099|r 79 ENAHWCVKLANQFNVEIIGDIELFVRERRFSSLQSPFIAVTGTNGKSSTVALISHVLRKNGYDVQLGGNIGLPILNLEYF 158 (468) Q Consensus 79 ~~~~~~~~~a~~~gi~v~s~~el~~~~~~~~~~~~~vI~VTGT~GKTTt~~ll~~iL~~~g~~~~~~GNiG~p~~~~~~~ 158 (468) T Consensus 80 ---hp~~~~a~~~g~~v~gdi~L~~~~~~~~-~~~~~~aITGTnGKtTTT~L~~~~L~~~G~~a~~gGNIG~p~L~~~~~ 155 (476) T TIGR01087 80 ---HPLVQAAAKRGIPVVGDIELALRLVDFP-EPAKVVAITGTNGKTTTTSLLYHLLKAAGLKAVLGGNIGTPALEVLDQ 155 (476) T ss_pred ---CHHHHHHHHCCCEEEEHHHHHHHHCCCC-CCCCEEEEECCCCHHHHHHHHHHHHHHCCCCEEEECCCCCHHHHHHCC T ss_conf ---7799999966980898679999741578-987379997268607999999999984699778625788125553105 Q ss_pred CCCCEEEEECCCCCCCCCCCCC--CCCCEEEEECCCHHHHHHHHHHCCCCCCCEEEEC---CCCCCCCCCHHHHHHHHHC Q ss_conf 8883799921775432122333--2210111002101222111000011221000101---3443224786789998740 Q gi|254781099|r 159 SPNRFYVIECSSYQIELTPTID--PSIGVLLNISPDHLDRHHTLENYVNIKKKIVTMS---KHAIICINDHQCEKIAYDM 233 (468) Q Consensus 159 ~~~~~~V~E~SSfQL~~~~~~~--PdiavITNI~~DHLd~~~s~e~y~~aK~~i~~~~---~~~iln~dd~~~~~~~~~~ 233 (468) T Consensus 156 ~~~~~~VlElSSFQL~~~~~~~p~p~i~~~lNi~~DHLD~h~~~~~Y~~aK~~i~~~~~~~d~~v~n~d~~~~~~~~~~~ 235 (476) T TIGR01087 156 EGAELYVLELSSFQLETTESLRPAPEIALILNISEDHLDWHGSFEDYVAAKLKIFARQTEGDVAVLNADQAYDPRFTRLE 235 (476) T ss_pred CCCCEEEEEECCHHHCCCCCCCCCCEEEEEECCCHHHHCCCCCHHHHHHHHHHHHCCCCCCCEEEEECCCCCCCHHHHCC T ss_conf 88966999700032045755566512468706635630110798899999889852599876798812002550465212 Q ss_pred CCCCCEEECCCCCC--CCCCCCEEECCCE--EEECCC--------CCCCCCCCCCCCCHHHHHCCCHHHHHHCCCCC--- Q ss_conf 12343011036443--2223411212413--541467--------64212345588510111001101222102222--- Q gi|254781099|r 234 NFIGHSISRISSQS--LQSDSDLYIDESF--LKCSAT--------SEVIFDFSQETKKHNIQNLVTSAVVCMQLGLK--- 298 (468) Q Consensus 234 ~~~~~~~~~~~~~~--~~~~~~~~~~~~~--~~~~~~--------~~~~~~~~~l~G~HNi~NalaAia~a~~lGi~--- 298 (468) T Consensus 236 ~~~~~~~~~~~~~~CP~~~~~~l~~~~~~~~l~~~~e~~~~C~~~~~~~~~~~~l~g~h~~~n~laa~ala~~~g~~~~~ 315 (476) T TIGR01087 236 KKSKAQVVLFSVEKCPAEAEQGLEIRDGKEYLKPNDENDFACDDLTILPCEELKLLGLHNAENILAAIALAKSLGLNSDE 315 (476) T ss_pred CCCCCEEEEECCCCCCHHHHHHHHHCCCCEEECCCCCCCCCHHHHHHHHHCCCCCCCHHHHHHHHHHHHHHHHHCCCCCC T ss_conf 46753078740445808899764123885263367876300001124332156767888999999999999982889760 Q ss_pred -CCCCHHHCCCHHHHHHHHHHHCCCCCCEEECCCCCCCHHHHHHHHHCCCCC--CEEEECCCCCCCCHHHHHHHHC-CCC Q ss_conf -211000000001345443321003430000023556755555532013332--0012032101220689899842-786 Q gi|254781099|r 299 -VEEIKRALLSCGGLTHRLQTIARLGHVIFINDSKATNLHSVIHAFLNEKRR--IYWIAGGLSKSDDFSTLFPFIS-KIA 374 (468) Q Consensus 299 -~~~i~~~L~~f~gv~~R~E~i~~~~gv~iIDDS~atnp~a~~~Al~~~~~~--i~lI~GG~~K~~d~~~L~~~~~-~~~ 374 (468) T Consensus 316 ~~~~~~~~l~~F~~~~HRlE~~~~~~G~~f~NDSKATn~~At~~AL~~~~~~~~~~LI~GG~~KG~df~~L~~~~~~~~~ 395 (476) T TIGR01087 316 ELEAILEALRSFKGLPHRLEYVGQKNGVHFINDSKATNVHATLAALSALKNPKRVILIVGGDDKGADFSPLAPALKKKVK 395 (476) T ss_pred HHHHHHHHHHHCCCCCCCEEEEEECCCEEEEECCCCCCHHHHHHHHHHCCCCCEEEEEEECCCCCCCHHHHHHHHCCCEE T ss_conf 16899999984579876268877728547982562121899999998479997189996034689984899998436507 Q ss_pred EEEEECCCHHHHHHHHHCCCCEE------EECCHHHHHHHHHHHHHHCCCC--CEEEECCCCCCCCCCCCHHHHHHHHHH Q ss_conf 89998899899888631689889------9879999999999999844898--599945221663134798999999999 Q gi|254781099|r 375 KAYFIGNSAMLFFHHFGGKINST------LSKTLDQALKSVVRDVENVQLP--SIVLFSPGCASFDQYNNFRERGFSFMS 446 (468) Q Consensus 375 ~~~liG~~~~~i~~~~~~~~~~~------~~~~~~~a~~~i~~~~~~~~~g--DiVLlSPa~aS~d~f~~y~~RG~~F~~ 446 (468) T Consensus 396 ~~~~~G~~~~~~~~~l~~~~~~~~~~~~~~~~~l~~Av~~a~---~~~~~g~~d~vLLSPacASFDqF~~y~eRGe~F~~ 472 (476) T TIGR01087 396 AVLAIGEDAAKIAKLLKEIGLVVKYGEETLVESLEEAVQAAR---EVAKEGNADVVLLSPACASFDQFKSYEERGEKFKE 472 (476) T ss_pred EEEEECCCHHHHHHHHHHCCCCCCCCCCHHHHHHHHHHHHHH---HHHCCCCCCEEEECCCCCCHHHHCCHHHHHHHHHH T ss_conf 999853547899998634276435465305778999999999---97127997679888641217773038888899999 Q ss_pred HHHH Q ss_conf 9986 Q gi|254781099|r 447 QVSE 450 (468) Q Consensus 447 ~v~~ 450 (468) T Consensus 473 ~v~~ 476 (476) T TIGR01087 473 LVRA 476 (476) T ss_pred HHHC T ss_conf 9819

HHsearch alignment for GI: 254781099 and conserved domain: TIGR01087