>cd00430 PLPDE_III_AR Type III Pyridoxal 5-phosphate (PLP)-Dependent Enzyme Alanine Racemase. This family includes predominantly bacterial alanine racemases (AR), some serine racemases (SerRac), and putative bifunctional enzymes containing N-terminal UDP-N-acetylmuramoyl-tripeptide:D-alanyl-D-alanine ligase (murF) and C-terminal AR domains. These proteins are fold type III PLP-dependent enzymes that play essential roles in peptidoglycan biosynthesis. AR catalyzes the interconversion between L- and D-alanine, which is an essential component of the peptidoglycan layer of bacterial cell walls. SerRac converts L-serine into its D-enantiomer (D-serine) for peptidoglycan synthesis. murF catalyzes the addition of D-Ala-D-Ala to UDPMurNAc-tripeptide, the final step in the synthesis of the cytoplasmic precursor of bacterial cell wall peptidoglycan. Members of this family contain an N-terminal PLP-binding TIM-barrel domain and a C-terminal beta-sandwich domain. They exist as homodimers with activ

Probab=99.81 E-value=2e-16 Score=131.72 Aligned_cols=309 Identities=17% Similarity=0.218 Sum_probs=204.9 Q ss_pred EEEEEHHHHHHHHHHHHHHCCCCCCEEEEEEECC----CCHHHHHHHHHCCC-CEEEECHHHHHHHHHCCCCCCCEEECC Q ss_conf 8997799999999999986144797899964107----99999999997399-289868999865221257843124447 Q gi|254780371|r 29 FYCYSTTAIEKNYLTFSNAFDGMDTMVCYALKAN----SNQAVIKTLAHLGS-GLDIVSEGELRRALAAPVPAERIVFSG 103 (431) Q Consensus 29 ~yV~d~~~i~~n~~~l~~a~~~~~~~i~yAvKaN----~~~~il~~l~~~G~-g~dv~S~~El~~al~~G~~~~~Ii~~g 103 (431) T Consensus 3 ~~eIdl~al~~N~~~lr~~~~-~~~ki~aVVKAnAYGhG~~~va~~l~~~Gv~~faVa~~~EA~~LR~~g~~~~Ilvl~~ 81 (367) T cd00430 3 WAEIDLDALRHNLRVIRRLLG-PGTKIMAVVKADAYGHGAVEVAKALEEAGADYFAVATLEEALELREAGITAPILVLGG 81 (367) T ss_pred EEEEEHHHHHHHHHHHHHHCC-CCCEEEEEEEECCCCCCHHHHHHHHHHCCCCEEEEEEHHHHHHHHHCCCCCCEEEECC T ss_conf 999819999999999998568-9986999996554657789999999987979999854999999997299998599668 Q ss_pred CCCCCHHHHHHHHCCCCCCCCCCCHHHHHHHHHHCCCCCCEEEEEEEECCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHH Q ss_conf 75420124444206872333322024676877411334421589987237786744333223344456887111134577 Q gi|254780371|r 104 VGKTIDEIDLALQSGIYCFNVESESELKTLNQRAVSLGKKAPIAFRVNPDINANTHKKISTGKKEDKFGIPIHQIHSLYA 183 (431) Q Consensus 104 ~~k~~~~l~~ai~~gv~~i~vDs~~el~~l~~~a~~~~~~~~I~lRinp~~~~~~~~~~~tg~~~sKFGi~~~~~~~~~~ 183 (431) T Consensus 82 ~--~~~~~~~~~~~~l-~~~i~s~~~l~~l~~~~~~~~~~~~vhlkiD------------TGM--~RlG~~~~e~~~~~~ 144 (367) T cd00430 82 T--PPEEAEEAIEYDL-TPTVSSLEQAEALSAAAARLGKTLKVHLKID------------TGM--GRLGFRPEEAEELLE 144 (367) T ss_pred C--CHHHHHHHHHCCE-EEEECCHHHHHHHHHHHHHCCCCCEEEEEEE------------CCC--CCCCCCHHHHHHHHH T ss_conf 9--9799999996180-7687869999999999887599823999980------------688--757889799999999 Q ss_pred HHHHCCCCCHHHHHHHHHHCCC-CCHHHHHHHHHHHHHHHHHHCCCCCCCEEEECCCCCCCCCCCCCCCCHHHHHHHHHH Q ss_conf 7641563220023355641564-420489999999988765310266652688068730002665455311456555654 Q gi|254780371|r 184 YASTLPGVKISGVDMHIGSQID-QIESFHKAFKLLRDLTQQLRSNGHNIQHIDVGGGLGIAYHSDHRPPSSSDYASLIHQ 262 (431) Q Consensus 184 ~~~~~~~l~l~GlH~H~GS~~~-~~~~~~~~~~~~~~~~~~l~~~g~~~~~ldiGGGf~i~y~~~~~~~~~~~~~~~i~~ 262 (431) T Consensus 145 ~l~~~~~l~~~gi~SHla~ad~~~~~~~~~Q~~~F~~~~~~l~~~~~~~~~~h~aNS~~~l~~~~-~~~d~vRpGi~LYG 223 (367) T cd00430 145 ALKALPGLELEGVFTHFATADEPDKAYTRRQLERFLEALAELEEAGIPPPLKHLANSAAILRFPE-AHFDMVRPGIALYG 223 (367) T ss_pred HHHHCCCCEEEEEEEECCCCCCCCCHHHHHHHHHHHHHHHHHHHCCCCCCEEEECCCHHHHCCCC-CCCCEEECCEEEEC T ss_conf 99868996188997402357887707889999999999999986489976376016897773950-03880601654426 Q ss_pred HHCCCCCEEEEEECCEECCCCCEEEEEEEEECCCC-------C--------CCCEEECCCCCCCCCCHHHCCCCCCCCCC Q ss_conf 21024530344101112036632588876403468-------9--------74220055300011001110246532222 Q gi|254780371|r 263 YFGNLQCKIILEPGRFLVADVGILVTKVISIKKSA-------D--------KTFVILDVAMNDFMRPTLYDAYHEINYIV 327 (431) Q Consensus 263 ~~~~~~~~l~~EPGR~lva~ag~ll~~V~~vK~~~-------~--------~~~~~vD~g~~~~~~p~~~~~~~~i~~~~ 327 (431) T Consensus 224 ~~p~~~~-----~~~~~Lkpv~~l~a~ii~ir~v~~G~~VGYg~~~~a~~~~~ia~v~iGYaDG~pr~~~~---~~~v~i 295 (367) T cd00430 224 LYPSPEV-----KSPLGLKPVMSLKARVVQVKTVPAGEGVSYGRTYTAPRPTRIATLPVGYADGYPRALSN---KGEVLI 295 (367) T ss_pred CCCCCCC-----CCCCCCCCEEEEEEEEEEEEECCCCCCCCCCCCEECCCCCEEEEECCCCCCCCCCCCCC---CCEEEE T ss_conf 8887344-----55668621079999999989718979234899403587834899711122564510268---868999 Q ss_pred CCCCCCCEEEEEEEEEECCCCCEEEEEE-ECCCCCCCCEEEEECCC Q ss_conf 3467776158999810005666656210-05668888899996797 Q gi|254780371|r 328 NPAGDRLHIHADIVGPICETGDFIALNR-KIALPRPGDLLYIEKTG 372 (431) Q Consensus 328 ~~~~~~~~~~~~i~G~~C~~~D~l~~~~-~lp~l~~GD~l~i~~~G 372 (431) T Consensus 296 ------~g~~~~ivGrvsM--D~~~vdvt~~~~~~~Gd~V~l~G~~ 333 (367) T cd00430 296 ------RGKRAPIVGRVCM--DQTMVDVTDIPDVKVGDEVVLFGRQ 333 (367) T ss_pred ------CCEEEEEEEEEEC--CEEEEECCCCCCCCCCCEEEEECCC T ss_conf ------9999256337505--5489988899889999999998189

HHsearch alignment for GI: 254780371 and conserved domain: cd00430