>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=98.69 E-value=1.2e-07 Score=66.71 Aligned_cols=321 Identities=14% Similarity=0.153 Sum_probs=187.5 Q ss_pred CCCCHHHHHHHHHHHHCCCCCCCCCC--CCHHHHHHHHHHHHHHCCCCCC-CCCCCCCCCCCCCCCCCCCCCCC-CCCCC Q ss_conf 98899999999999838875699877--8989999999986421013333-22332334543333222222233-22322 Q gi|254780602|r 43 FDMPENVKYAVVRAMERGETKYTAVA--GISPLREAIVEKFRRDNDLHYT-SDQIIVGTGAKHVIFNALMATVN-MGDEV 118 (400) Q Consensus 43 ~~~p~~i~~a~~~al~~~~~~Y~~~~--G~~~lR~aia~~~~~~~g~~~~-~e~I~it~G~~~~l~~~~~~~~~-~Gd~V 118 (400) T Consensus 12 LtTs~~vk~aMl~-------D~CtWD~dYn~~~~~~ir~~L~~la~~~~~~YT~VllQGSGtf~VEA~iGs~~pr~~~kl 84 (366) T TIGR02326 12 LTTSKTVKEAMLV-------DWCTWDSDYNEDVVESIRQKLLKLATAEEEKYTTVLLQGSGTFAVEAVIGSAVPRKDGKL 84 (366) T ss_pred CCHHHHHHHHHHC-------CCCCCCHHHHHHHHHHHHHHHHHHHHCCCCCEEEEEECCCCHHHHHHHHHCCCCCCCCEE T ss_conf 6300688886621-------045871553136799999999998606898546786127512555665411247889738 Q ss_pred CCCC-CCCCC-CCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHCCCCCCC--CCEEECCCCCCCCCCCCCCCCCCCCCCCC Q ss_conf 2233-33232-22222222222222222222322210333100012212--20121135421000012333321112233 Q gi|254780602|r 119 LIPR-PYWVS-YPDMVALCGGIPVFVDTQQDDNFQVSPEKLEQAITPKT--KWLFLNSPSNPSGVVYSQNRLRALADVLV 194 (400) Q Consensus 119 lv~~-P~y~~-y~~~~~~~g~~~~~v~~~~~~~~~~d~~~l~~~i~~~~--k~i~l~nP~NPTG~v~s~~~l~~i~~~~a 194 (400) T Consensus 85 Lv~~NGAYG~R~~~ia~~l~i~~~~~~~~E~~--~~~~~~ve~~L~~dp~ItH~A~vHcETtTGiLNPi~---~~~~~-~ 158 (366) T TIGR02326 85 LVVINGAYGKRIAQIAEYLQIPHHVVETEENE--PTNVVEVEAILAADPAITHVALVHCETTTGILNPIE---AVAKV-A 158 (366) T ss_pred EEEECCCHHHHHHHHHHHHCCCEEEEECCCCC--CCCHHHHHHHHHCCCCCEEEEEEECCCCCCCCCHHH---HHHHH-H T ss_conf 99717853478999999847861675158777--778899999985189712788983675266211289---99999-9 Q ss_pred CCCCCEEECCCCCCCCCCCCCCCCCCCCCCCCCCCEEEEECCCCCC-CCCCCCCCCCCCCHHHHHHH------------- Q ss_conf 3332011101221100000122332221112333225741465443-22344544422110122687------------- Q gi|254780602|r 195 RNPHVHIISDDIYEHIVYRNCQFSNIVNVEPSLYERTLVVNGVSKA-YAMTGLRIGYAAGALSLIKS------------- 260 (400) Q Consensus 195 ~~~~i~ii~De~Y~~l~~~~~~~~s~~~~~~~~~~~~i~~~S~SK~-~~~~G~RiG~~v~~~~li~~------------- 260 (400) T Consensus 159 ~~hGk~~ivDAM-S--SfGgi~-idi~~l~~-----D~LIssanKCi~GVPG--fgFviA~~~~L~~~~g~arSLsLDLy 227 (366) T TIGR02326 159 KRHGKVTIVDAM-S--SFGGIP-IDIAELDI-----DYLISSANKCIQGVPG--FGFVIAKQAELEKCAGNARSLSLDLY 227 (366) T ss_pred HHCCCEEEEECC-C--CCCCCH-HHHHHHCC-----CEEEECCCCCCCCCCC--HHHHHHHHHHHHHHCCCCCHHHHHHH T ss_conf 855977998534-1--137600-11643256-----7635234781337684--36677689999862043210235489 Q ss_pred --HHHHC---CCCCCCCCCCCCCCCCCCCCCC--CCCCCCCCCCCCCCCCCHHHHHHCCCCCEEEECCCCEEEEEECCCC Q ss_conf --53100---1222332222222222223467--6432222221100000002455304776033027408998626410 Q gi|254780602|r 261 --MIVLQ---GQQTSGACSIAQWAAVEALNGP--QDFVVNNRKIFEYRRDLCVAQLQGVPGIRYMIPDGAFYLYPSCQDL 333 (400) Q Consensus 261 --l~~~~---~~~~~~~~~~~q~a~~~~l~~~--~~~~~~~~~~~~~~r~~~~~~L~~~~g~~~~~p~g~~y~~~~~~~~ 333 (400) T Consensus 228 dQw~~M~~~~GkWRFTsPTHvV~Af~qAL~el~~EGGv~aR~~RY~~nq~~L~~~m~~L-GF~~ll~~~-------~~sP 299 (366) T TIGR02326 228 DQWECMEKQHGKWRFTSPTHVVHAFAQALLELEKEGGVEARYQRYQSNQKLLVAGMRAL-GFEPLLDDE-------LQSP 299 (366) T ss_pred HHHHHHHCCCCCEEECCCHHHHHHHHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHHHC-CCCCCCCHH-------HCCC T ss_conf 99999644899622177268999999999999845897457899999999999999861-551147543-------4588 Q ss_pred CCCCCCCCC-CCCCHHHHHHHHHHHCCEEEECCCCCCCCCEEEEE-EE-CCHHHHHHHHHHHHHHHH Q ss_conf 233211332-24898999999998739799835022899728999-62-999999999999999998 Q gi|254780602|r 334 IGKKSPSGD-VIRTDLDFVNGLLEIEKVAVVQGSSFGHGPSIRIS-YA-VSDAILEEACVRIKRFCH 397 (400) Q Consensus 334 ~~~~~~~~~-~~~~~~~~~~~Ll~~~gV~v~pG~~Fg~~~~iRis-~~-~~~e~l~~al~rl~~~l~ 397 (400) T Consensus 300 IItsF~~P~~~~y~F~~fY~~l-k~~GFviYPGKvs~-~~~FRiG~IG~V~~~di~~l~~~I~~~~~ 364 (366) T TIGR02326 300 IITSFYSPEDPDYRFADFYQRL-KEQGFVIYPGKVSQ-VDTFRIGNIGDVDAADIERLVTAIGKALY 364 (366) T ss_pred EEEEEECCCCCCCHHHHHHHHH-HHCCCEECCCCCCC-CCCEECCCCCCCCHHHHHHHHHHHHHHHH T ss_conf 6898507788971389999999-76781762761045-66211167676388999999999998750

HHsearch alignment for GI: 254780602 and conserved domain: TIGR02326