>TIGR01205 D_ala_D_alaTIGR D-alanine--D-alanine ligase; InterPro: IPR005905 D-alanine--D-alanine ligase (6.3.2.4 from EC) is a bacterial enzyme involved in cell-wall biosynthesis. It participates in forming UDP-N-acetylmuramoyl pentapeptide, the peptidoglycan precursor. These enzymes are proteins of 300 to 360 amino acids containing many conserved regions. The N-terminal Gly-rich region could be involved in ATP-binding. This family of enzymes represent chromosomal versions of species not specifically resistant to glycopeptide antibiotics such as vancomycin. The mechanism of glycopeptide antibiotic resistance involves the production of D-alanine-D-lactate (VanA and VanB families) or D-alanine-D-serine (VanC). This model attempts to exclude the VanA/VanB and VanC subfamilies while capturing most other D-Ala-D-Ala ligases above the trusted cut-off. However, changes in small numbers of amino acids, as demonstrated crystallographically, can alter specificity. In chlamydial species, this enzyme is found as a fusion protein with UDP-N-acetylmuramate--alanine ligase. ; GO: 0008716 D-alanine-D-alanine ligase activity, 0009252 peptidoglycan biosynthetic process, 0005737 cytoplasm.

Probab=98.55 E-value=1.3e-06 Score=63.14 Aligned_cols=153 Identities=20% Similarity=0.191 Sum_probs=98.8 Q ss_pred HHHHHHHHHHCCCCCCCCEEE--CCHHHHH-------HHHHHCCCCEEEEECCCCCCCCCCCCCCCCCCCCCCEEEEECC Q ss_conf 799999999868988881574--7999999-------9998729986999712136876565655677777770799589 Q gi|254781049|r 5 EYQAKALLRKYNVPVAKGVVI--SSVHAAE-------SAIKTLPGPLYVVKSQIHAGGRGKGRFKELPADSKGGVRVESS 75 (398) Q Consensus 5 EyqaK~lL~~~GIpvp~g~~a--~s~~ea~-------~~a~~ig~p~~VvKaQV~aGgRGKa~~~~~hk~~~GGV~l~~s 75 (398) T Consensus 150 K~~tK~~~~~~Glp~~~y~~l~~~~~~~~~~~~~~~~~~~~~lg~P~-~VKPa-~------------~GSSv-G~~~V~~ 214 (375) T TIGR01205 150 KLLTKLLLKSLGLPTPDYAVLRRKERSSEDEAECENVAVLEKLGFPV-FVKPA-R------------EGSSV-GISKVKS 214 (375) T ss_pred HHHHHHHHHHCCCCCCCCEEEEECCCCCCHHHHHHHHHHHHHCCCCE-EEEEC-C------------CCCEE-EEEEECC T ss_conf 89999999875797447046750454456134689999998368978-99734-6------------77757-7898467 Q ss_pred HHHHHHHHHHHCCCCCCCCCCCCCCCCCCCEEECCC---CCCCEEEEEEEEEECCCCCEEEEEECCCCCCHHHHHHHCHH Q ss_conf 999999999861876544212222244330110345---55650589999983477804899844788402455574831 Q gi|254781049|r 76 LKSVISDIREILGSTLITKQTGPTGSRVNCVYVEDG---ADILRELYLSLLVDRTSGMVAFIASTQGGMDIEEVAKDYPQ 152 (398) Q Consensus 76 ~~ea~~~a~~ilg~~l~t~qt~~~G~~v~~vLVEe~---v~~~~E~ylgi~~Dr~~~~~vii~S~~GGvdIE~va~~~p~ 152 (398) T Consensus 215 ~~eL~~a~~~Af~~d-------------~~v~vE~~~~~i~-grEl~v~~L~~~~-~lp~~--~~-~~~-~------~~~ 269 (375) T TIGR01205 215 EEELEAALDEAFKYD-------------ERVIVEEFKQRIK-GRELEVSILGNEE-ALPII--SI-VPE-I------EPD 269 (375) T ss_pred HHHHHHHHHHHHCCC-------------CEEEEEECCCCCC-CCEEEEEEEECCC-CCEEE--EC-CCC-C------CCC T ss_conf 789999999861559-------------6599981114789-8526898870797-43245--40-675-3------567 Q ss_pred HHEEEECCCCCCCCHHH-HHHHHHH-CCCCHHHHHHHHHHHHHHHHHH Q ss_conf 22033214445789578-8878875-1988899885999999998999 Q gi|254781049|r 153 KIFKLLIDPLIGVTSED-VASLCDM-LELQGQARIDGGDLFPNLYKAF 198 (398) Q Consensus 153 ~I~~~~id~~~gl~~~~-~~~l~~~-lg~~~~~~~~~~~ii~~L~~~f 198 (398) T Consensus 270 g~-~~FYDY~~KY~~~~g~~~~~pa~~~L~~~~~~~i~~~a~~ay~~~ 316 (375) T TIGR01205 270 GG-SDFYDYEAKYLDGDGTEYVIPAPAGLDEELEEKIKELALKAYKAL 316 (375) T ss_pred CC-CEECCHHHCCCCCCCCEEEECCCCCCCHHHHHHHHHHHHHHHHHC T ss_conf 67-600002114277887326515656788899999999999999840

HHsearch alignment for GI: 254781049 and conserved domain: TIGR01205