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