>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=99.55 E-value=8.4e-14 Score=114.18 Aligned_cols=206 Identities=18% Similarity=0.219 Sum_probs=146.0 Q ss_pred HHHHHHHHHHHHHHHCCCCHHHCEEEEECCCC----CHHHHHH-HHHCCCCCCCCCCCHHHHHHHHCCCCCCCCCEEEEC Q ss_conf 99999999999999819896441899871899----9999999-997298100012100011110000012587302302 Q gi|254780801|r 6 KLQVFKQKIENSAILAKRPKDSVSLVAVSKMV----DSKKIRV-ALSCGQVIFAENKLQEAKKKWIPLRKEWDVQLRFIG 80 (222) Q Consensus 6 nl~~i~~~I~~a~~~~gR~~~~v~LiaVtK~~----~~e~I~~-~~~~G~~~fGENrvQE~~~K~~~l~~~~~i~wHfIG 80 (222) T Consensus 7 dl~al~~N~~~lr~~~~---~~~ki~aVVKAnAYGhG~~~va~~l~~~Gv~~faVa~~~EA~~LR~~g~---~~~Ilvl~ 80 (367) T cd00430 7 DLDALRHNLRVIRRLLG---PGTKIMAVVKADAYGHGAVEVAKALEEAGADYFAVATLEEALELREAGI---TAPILVLG 80 (367) T ss_pred EHHHHHHHHHHHHHHCC---CCCEEEEEEEECCCCCCHHHHHHHHHHCCCCEEEEEEHHHHHHHHHCCC---CCCEEEEC T ss_conf 19999999999998568---9986999996554657789999999987979999854999999997299---99859966 Q ss_pred CCCCCHHHHHCCCCHHCCCCCCCCHHHHHHHHHHHHCCCEEEEEEEECCCCCCCCCCCCCHHHHHHHHHHCCCCCCHHHH Q ss_conf 44320013201110000122222001344333333114303688970046656346570001222344310431100111 Q gi|254780801|r 81 SLQSNKVSEIVSLFDVIETVSREKTASLLSLEMIKQSRFLPVYIQVNTGYEIQKSGIMPNQTKDFVILCRQKYQLNVEGL 160 (222) Q Consensus 81 ~LQsNKvk~i~~~~~~Ihsvds~~~a~~L~~~~~~~~~~~~vliQVN~~~e~~K~G~~p~el~~l~~~i~~~~~L~i~GL 160 (222) T Consensus 81 ~~~~~~~~~~~~~-~l~~~i~s~~~l~~l~~~~~~~~~~~~vhlkiDTG--M~RlG~~~~e~~~~~~~l~~~~~l~~~gi 157 (367) T cd00430 81 GTPPEEAEEAIEY-DLTPTVSSLEQAEALSAAAARLGKTLKVHLKIDTG--MGRLGFRPEEAEELLEALKALPGLELEGV 157 (367) T ss_pred CCCHHHHHHHHHC-CEEEEECCHHHHHHHHHHHHHCCCCCEEEEEEECC--CCCCCCCHHHHHHHHHHHHHCCCCEEEEE T ss_conf 8997999999961-80768786999999999988759982399998068--87578897999999999986899618899 Q ss_pred EE-CCCCCCC--C--HHHHHHHHHHHHHC-----CCCEECCCCCHHHHHHHHHCCCEEEECHHHCCCCCC Q ss_conf 01-1543345--2--05899999998875-----894722477734899998089889971132389999 Q gi|254780801|r 161 MC-IPPAMGN--P--KPHFYLLSEIAREC-----KLTKLSMGMTRDFELAIASGATSVRIGSGIFGERPC 220 (222) Q Consensus 161 Mt-i~p~~~d--~--~~~F~~l~~l~~~~-----~~~~LSmGMS~D~~~Ai~~Gst~vRiGs~iFG~R~~ 220 (222) T Consensus 158 ~SHla~ad~~~~~~~~~Q~~~F~~~~~~l~~~~~~~~~~h~aNS~~~l~~~~~~~d~vRpGi~LYG~~p~ 227 (367) T cd00430 158 FTHFATADEPDKAYTRRQLERFLEALAELEEAGIPPPLKHLANSAAILRFPEAHFDMVRPGIALYGLYPS 227 (367) T ss_pred EEECCCCCCCCCHHHHHHHHHHHHHHHHHHHCCCCCCEEEECCCHHHHCCCCCCCCEEECCEEEECCCCC T ss_conf 7402357887707889999999999999986489976376016897773950038806016544268887

HHsearch alignment for GI: 254780801 and conserved domain: cd00430