HHsearch alignment for GI: 254780821 and conserved domain: TIGR01082

>TIGR01082 murC UDP-N-acetylmuramate--alanine ligase; InterPro: IPR005758 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-acetylmuramate-alanine ligase (MurC). MurC is an essential, cytoplasmic peptidoglycan biosynthetic enzyme, catalyzes the ATP-dependent ligation of L-alanine (Ala) and UDP-N-acetylmuramic acid (UNAM) to form UDP-N-acetylmuramyl-L-alanine (UNAM-Ala). The enzyme is a nonribosomal peptide ligase which utilises ATP to form an amide bond between L-alanine and UNAM.1 Mechanistic studies on the Escherichia coli MurC enzyme using oxygen isotope analyses demonstrated that the enzyme-catalyzed reaction proceeds through an acyl phosphate UNAM intermediate prior to L-alanine addition.; GO: 0005524 ATP binding, 0008763 UDP-N-acetylmuramate-L-alanine 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=2.7e-40  Score=268.09  Aligned_cols=349  Identities=20%  Similarity=0.222  Sum_probs=232.0

Q ss_pred             HHHHHHHHHHCCCHHHHCC-CEEEEECCCCHHHHHHHHHHHHHHCCCCEEEEECCCCCEEEEEEEECCC----CCCCEEC
Q ss_conf             8999999987299588359-8399945898479999999999997893514137841101200898884----7787155
Q gi|254780821|r    6 LLKMGYLLEDLGRPQDRLP-PVIHIGGTNGKGSVASFSQRLLETSGLSVHVHTSPHLIRWNERFRLGVK----GGRGRLV   80 (429)
Q Consensus         6 l~r~~~ll~~lg~P~~~~~-~vI~VtGTnGKttt~~~i~~il~~~g~k~g~~tSPhl~~~~Eri~i~~~----~~~g~~i   80 (429)
T Consensus        94 ~~R~~~Lael~~-----~~k~~iaVaGtHGKTTTTamia~~~~~aGLdPt~-------------~~GG~~~~~~~Na~~g  155 (491)
T TIGR01082        94 IRRAEMLAELMR-----KRKESIAVAGTHGKTTTTAMIAVILKEAGLDPTV-------------IVGGEVKEAGTNARLG  155 (491)
T ss_pred             ECHHHHHHHHHH-----HHCCEEEEECCCCCHHHHHHHHHHHHHCCCCCCE-------------EECCCCCCCCCCEEEC
T ss_conf             337899999986-----2087079983687256899999999844999768-------------9866436657743571


Q ss_pred             CHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHH--HHCCCCCCCEEEEEECCCHHCC-C
Q ss_conf             889999999998630477677957899999998741144624777644475676--4135677515898602500000-0
Q gi|254780821|r   81 EDVELLDVFRRVRRVKSAQNLTIFELSIATALVLFSKYPADCAIIEVGLGGSLD--ATNIIEKVAVSVITSISLDHEK-I  157 (429)
Q Consensus        81 ~~~~~~~~~~~i~~~~~~~~~t~FE~lt~~a~~~f~~~~~d~~vlE~GlGGr~D--aTnvi~~~~vavITnI~~DHle-~  157 (429)
T Consensus       156 ~-------------------------------------~~~~lvaEaD---ESd~~~sFl~~~P~~ai~TNie~DH~D~t  195 (491)
T TIGR01082       156 S-------------------------------------SGEYLVAEAD---ESDRSASFLHLQPEVAIVTNIEPDHLDNT  195 (491)
T ss_pred             C-------------------------------------CCCEEEEEEE---ECCCCCCHHCCCCCEEEECCCCCCCCCCC
T ss_conf             4-------------------------------------6867999987---23776401206985799747774347766


Q ss_pred             CCCCHHHH--HHHHHH-HCCCCCCCCCCCCCCHHHHHHHHHHHHHCCC-CCCCCC---CC--CCC---CCCCC--EEEEE
Q ss_conf             27852344--566653-1137983315444717898899998621056-652357---63--210---12585--24443
Q gi|254780821|r  158 LGNTVSAI--AKDKSG-IIKPGCPVVIGHQVYDEVREILVSKAEKMGC-PYNVYG---DD--FYA---FEKNK--CLVYQ  223 (429)
Q Consensus       158 LG~tle~I--a~eKa~-I~k~~~~~v~~~~~~~~~~~~i~~~a~~~~~-~~~~~~---~~--~~~---~~~~~--~~~~~  223 (429)
T Consensus       196 Y~~~~E~~~~aF~~F~~~l~~~G~~v~c~D-D~~~~~l~-~~~~~~r~d~~~~y~~~~~~~~~~~~~~~~~~~~~~f~v~  273 (491)
T TIGR01082       196 YGSSLERLKAAFEKFIHNLPFYGLAVICAD-DPVLRKLV-PKATESRKDVVITYGGSGEDADIRAENIQQSGAEFEFSVR  273 (491)
T ss_pred             CCCCHHHHHHHHHHHHHHCCCCCEEEEECC-CHHHHHHH-HHHHHCCCEEEEECCCCCCCCEEEEEEEEECCCEEEEEEE
T ss_conf             645789999999999982788879999838-65478776-3555338704786687776414778874322645899999


Q ss_pred             ECCCC-------CCCCCCCCCCCCCCCCHHHHHHHHHHHHHCC-------HHHHCCCCCCCCCCCC-CEEEEECCCCCCC
Q ss_conf             10333-------3444444322221111146999987532000-------0110011222233665-3035422875444
Q gi|254780821|r  224 DKISQ-------TNLTVLGLVGEHQYINAATAICAVQMAGFTL-------EKECINAALQSVQWFG-RLQKITEGPLLNK  288 (429)
Q Consensus       224 ~~~~~-------~~~~~l~l~G~hn~~Na~~Aiaa~~~lg~~i-------~~~~I~~gL~~~~~pG-R~e~i~~~~~~~~  288 (429)
T Consensus       274 ~~~~~~~~~~~G~~~~~~~~pG~HNvLNAlAA~ava~~~g~~~~G~~~~~~~~~I~~~L~~F~G~~RRf~~~g~~~~~~-  352 (491)
T TIGR01082       274 LKGKLGEATTEGPLEFKLNLPGRHNVLNALAAIAVALELGLDFYGKVIVDFLEAIKRALANFQGVKRRFEILGECNGGN-  352 (491)
T ss_pred             ECCCCCCCEEEEEEEEEEECCCCCCHHHHHHHHHHHHHHCCCCCCCEEEEHHHHHHHHHHCCCCCCHHHHHHHHCCCCC-
T ss_conf             7045220111002799980387200678999998888722123685564158999999850689731012010027898-


Q ss_pred             CCCCCEEEEECCCCHHHHHHHHHHHHHHCCCCCCCEEEEEC---CCCCCC-HHHHHHHHHHHCCEEEEEEECCCCCCCCC
Q ss_conf             57874599933632157998886543311477771243113---467989-89999988863888999842288998421
Q gi|254780821|r  289 LPDHSEVWIDGGHNPNAGLVVSKEISKLKGSSNKPFYLVIG---MVEGKK-YGRYLEAFVELSPIVLSVSLICRGRERQS  364 (429)
Q Consensus       289 ~~~~~~viiD~AHNp~s~~~l~~~l~~l~~~~~~~i~~I~G---~~~dKd-~~~~l~~l~~~~d~i~~~~~~~~~~~~~~  364 (429)
T Consensus       353 n~g~~~~~DDYAHHPtEi~aTl~aAr~~~~~k~~r~v~~FQPHrYsRT~~~~~~F~~~L~~haD~l~~~diY~A~E~~~-  431 (491)
T TIGR01082       353 NNGTVLLIDDYAHHPTEIKATLAAARQVYPDKNRRIVVVFQPHRYSRTKDLFDDFAKVLSDHADELILLDIYAAGEEPI-  431 (491)
T ss_pred             CCCEEEEEECCCCCHHHHHHHHHHHHHHHCCCCCEEEEEECCCCHHHHHHHHHHHHHHHHHCCCEEEEECCCCCCCCCC-
T ss_conf             7527999965899978999999999875211795799997498567899889999999973089999815321136776-


Q ss_pred             CCCCHHHHHHHHHHCC--CCEEEECCHHHHHHHHHHHCCCCCCCEEEEECCHHHHHHHHH
Q ss_conf             2789899999998549--978996998999999998603588679999497799999999
Q gi|254780821|r  365 ISITPKVLMQEAKKLG--FQAMACSSMIEALSRVRKINEELPPPLILIAGSLYLAGEALR  422 (429)
Q Consensus       365 ~~~~~~~l~~~~~~~~--~~~~~~~~~~eAi~~a~~~~~~~~~d~VLV~GS~ylvge~l~  422 (429)
T Consensus       432 ~g~~~~~l~~~~~~~~~~~~~~f~~~~~~~~~~l~~~~--~~GD~~~~~G----AG~~~~  485 (491)
T TIGR01082       432 AGIDGKSLARKITQKKGKEEPYFVPDLAEVVEFLAEVL--QSGDLILTMG----AGDVSK  485 (491)
T ss_pred             CCCCHHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHHHC--CCCCEEEEEC----CCCHHH
T ss_conf             78778999999862578777610421778999999971--6998999960----552010