>TIGR02326 transamin_PhnW 2-aminoethylphosphonate--pyruvate transaminase; InterPro: IPR012703 Phosphonates are a class of organophosphorus compounds, characterised by a stable C-P bond, which are found in a variety of biologically produced molecules including antiobiotics, lipids, proteins and polysaccharides . The functions of these molecules include phosphorus storage, cell communication, host recognition and chemical warfare. 2-Aminoethylphosphonate (AEP), the most common naturally occurring phosphonate, is an important precursor used in the biosynthesis of phosphonolipids, phosphonoproteins, and phosphonoglycans. This entry represents 2-aminoethylphosphonate-pyruvate transaminase (AEPT)(2.6.1.37 from EC) which catalyses the interconversion of AEP and phosphonoacetaldehyde (P-Ald), coupled with the interconversion of pryuvate and L-alanine. In some bacterial species this is the first step in an AEP degradation pathway which allows them to utilise this compound as a source of carbon, nitrogen and phosphorus. Phosphonoacetaldeyhde hydrolase, often encoded by an adjacent gene, then converts P-Ald to acetaldehyde and phosphate.Species with this pathway generally have an identified phosphonate ABC transporter but do not also have the multisubunit C-P lyase complex as found in Escherichia coli. The crystal structure of AEPT from Salmonella typhimurium has been studied to 2.2 A resolution . The protein is a homodimer where each subunit is composed of two domains, large and small. The large domain forms an alpha-beta complex characteristic of the aspartate transaminase family, while the small domain is comosed of highly twisted beta strands. The active site contains a pyridoxal 5'-phosphate cofactor and is found at the domain interface, being composed of residues from both subunits..

Probab=99.59 E-value=7.4e-13 Score=102.62 Aligned_cols=282 Identities=18% Similarity=0.239 Sum_probs=190.5 Q ss_pred HHHHHHHHHHHHCCCC-----CEEEEECCCCCHHHHHCCCCC-CCCCEEEEHHHHHHHHHHHHHHHCC------CCEEEE Q ss_conf 2899999888734997-----337740565201222023467-7887234213211167520145316------513531 Q gi|254780604|r 91 YHVMLEKELATLHGKK-----AALIFNSGYIANWATIGTLCS-QIDNIICFSDSHNHASIIEGINKAR------CKKVIW 158 (401) Q Consensus 91 ~~~~LE~~la~~~g~e-----~al~~~SG~~An~~~i~~l~~-~~d~ii~~~D~~~HaSi~~g~~l~~------a~~~~f 158 (401) T Consensus 37 ~~~~ir~~L~~la~~~~~~YT~VllQGSGtf~VEA~iGs~~pr~~~klLv~~-NGAY-----G~R~~~ia~~l~i~~~~~ 110 (366) T TIGR02326 37 VVESIRQKLLKLATAEEEKYTTVLLQGSGTFAVEAVIGSAVPRKDGKLLVVI-NGAY-----GKRIAQIAEYLQIPHHVV 110 (366) T ss_pred HHHHHHHHHHHHHHCCCCCEEEEEECCCCHHHHHHHHHCCCCCCCCEEEEEE-CCCH-----HHHHHHHHHHHCCCEEEE T ss_conf 7999999999986068985467861275125556654112478897389971-7853-----478999999847861675 Q ss_pred -----CCCCHHHHHHHHHHCCCCCCC-EEECCCCCCCCCCHHHHHHHHHHHHCCCCEEEECCCCCCCCCCCHHHHHHHHH Q ss_conf -----679988988867406633562-36216743567733689999998401471899712110012560258999997 Q gi|254780604|r 159 -----NHNDLEDLEKNLAATDLSIPK-IIIFESIYSMDGDIAPIKEICDLADQYNAITYIDEVHAVGIHGSCGAGISERE 232 (401) Q Consensus 159 -----~HnD~~~Le~~L~~~~~~~~~-iIv~e~v~Sm~G~~apL~~l~~l~~~~~~~LivDEAH~~Gv~G~~G~G~~~~~ 232 (401) T Consensus 111 ~~~E~~~~~~~~ve~~L~~dp~ItH~A~vHcET---tTGiLNPi~~~~~~~~~hGk~~ivDAMSSfGgi~i------di~ 181 (366) T TIGR02326 111 ETEENEPTNVVEVEAILAADPAITHVALVHCET---TTGILNPIEAVAKVAKRHGKVTIVDAMSSFGGIPI------DIA 181 (366) T ss_pred ECCCCCCCCHHHHHHHHHCCCCCEEEEEEECCC---CCCCCCHHHHHHHHHHHCCCEEEEECCCCCCCCHH------HHH T ss_conf 158777778899999985189712788983675---26621128999999985597799853411376001------164 Q ss_pred HCCCCCCHHHCCCCCCC-CCCE-EEEECCHHHHHH------------------HHCCCCCCCCCCCCCCHHHHHHHHHHH Q ss_conf 20200101101444322-2231-687548445000------------------001332223334444314788998764 Q gi|254780604|r 233 GIMNRITIISGTLAKGF-GTFG-GYIAASENLCDF------------------IRSFASGFIFSTSLPPAIASASVTSIQ 292 (401) Q Consensus 233 g~~~~~di~~~TlsKa~-g~~G-G~i~g~~~~~~~------------------l~~~~~~~ifs~~l~p~~~aa~~~al~ 292 (401) T Consensus 182 ~--l~~D~LIssanKCi~GVPGfgFviA~~~~L~~~~g~arSLsLDLydQw~~M~~~~GkWRFT--sPTHvV~Af~qAL~ 257 (366) T TIGR02326 182 E--LDIDYLISSANKCIQGVPGFGFVIAKQAELEKCAGNARSLSLDLYDQWECMEKQHGKWRFT--SPTHVVHAFAQALL 257 (366) T ss_pred H--HCCCEEEECCCCCCCCCCCHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHCCCCCEEEC--CCHHHHHHHHHHHH T ss_conf 3--2567635234781337684366776899998620432102354899999964489962217--72689999999999 Q ss_pred HHHCC---HHHHHHHHHHHHHHHHHHHHCCCCCCCC---CCCEEEEEECCHH---HHHHHHHHHHHHCCEEEEEECCCCC Q ss_conf 32012---0168888999987666566449830378---9865999968979---9999999999737909984048888 Q gi|254780604|r 293 YIKQH---YDERKKYLERVKQLRHSLENKAIPCIPN---ESHIIPIMVGDSH---KCTQISNILLKEFGIYIQPINYPTV 363 (401) Q Consensus 293 ~l~~~---~~~~~~l~~~~~~l~~~L~~~g~~~~~~---~s~Ivpi~~g~~~---~~~~~~~~lL~e~Gi~v~~i~~PtV 363 (401) T Consensus 258 el~~EGGv~aR~~RY~~nq~~L~~~m~~LGF~~ll~~~~~sPIItsF~~P~~~~y~F~~fY~~-lk~~GFviYPGK---v 333 (366) T TIGR02326 258 ELEKEGGVEARYQRYQSNQKLLVAGMRALGFEPLLDDELQSPIITSFYSPEDPDYRFADFYQR-LKEQGFVIYPGK---V 333 (366) T ss_pred HHHHCCCCCHHHHHHHHHHHHHHHHHHHCCCCCCCCHHHCCCEEEEEECCCCCCCHHHHHHHH-HHHCCCEECCCC---C T ss_conf 998458974578999999999999998615511475434588689850778897138999999-976781762761---0 Q ss_pred CCCCCEEEEECCCCCCHHHHHHHHHHHHHHHHH Q ss_conf 888721899618579999999999999999997 Q gi|254780604|r 364 AKKKERLRVTLTPLHTDSDIEHLVSSLENVWQK 396 (401) Q Consensus 364 p~g~~rlRi~l~a~ht~edid~~~~~l~~v~~~ 396 (401) T Consensus 334 s-~~~~FRiG~IG~V~~~di~~l~~~I~~~~~~ 365 (366) T TIGR02326 334 S-QVDTFRIGNIGDVDAADIERLVTAIGKALYL 365 (366) T ss_pred C-CCCCEECCCCCCCCHHHHHHHHHHHHHHHHC T ss_conf 4-5662111676763889999999999987504

HHsearch alignment for GI: 254780604 and conserved domain: TIGR02326