>TIGR01825 gly_Cac_T_rel pyridoxal phosphate-dependent acyltransferase, putative; InterPro: IPR010962 Pyridoxal phosphate is the active form of vitamin B6 (pyridoxine or pyridoxal). PLP is a versatile catalyst, acting as a coenzyme in a multitude of reactions, including decarboxylation, deamination and transamination , , . PLP-dependent enzymes are primarily involved in the biosynthesis of amino acids and amino acid-derived metabolites, but they are also found in the biosynthetic pathways of amino sugars and in the synthesis or catabolism of neurotransmitters; pyridoxal phosphate can also inhibit DNA polymerases and several steroid receptors . Inadequate levels of pyridoxal phosphate in the brain can cause neurological dysfunction, particularly epilepsy . PLP enzymes exist in their resting state as a Schiff base, the aldehyde group of PLP forming a linkage with the epsilon-amino group of an active site lysine residue on the enzyme. The alpha-amino group of the substrate displaces the lysine epsilon-amino group, in the process forming a new aldimine with the substrate. This aldimine is the common central intermediate for all PLP-catalyzed reactions, enzymatic and non-enzymatic . This entry contains a number of enzyme families: Serine palmitoyltransferase Glycine C-acetyltransferase (2-amino-3-ketobutyrate coenzyme A ligase) 5-aminolevulinic acid synthase 8-amino-7-oxononanoate synthase All transfer the R-group (acetyl, succinyl, or 6-carboxyhexanoyl) from coenzyme A to an amino acid (Gly, Gly, Ala, respectively), with release of CO2 for the latter two reactions.; GO: 0016740 transferase activity, 0030170 pyridoxal phosphate binding.

Probab=99.82 E-value=5.3e-19 Score=139.37 Aligned_cols=333 Identities=18% Similarity=0.230 Sum_probs=217.6 Q ss_pred CCCCCEEEEE-CCCCC-CCCHHHHHHHHHHHHHHCCCCCCHHHHHHH-HHHHHHHHHHHHHHHHCCCCCCCCCCCCCCHH Q ss_conf 6578659976-68888-989899999999998614986602679999-99999999999999982879765433468768 Q gi|254781062|r 19 IRKKPLIYFD-NAASA-QKPQDVIDSIMCTYSHEYANIHRGLHYMAN-AVTDKYEKARDKVRRFINASSVKEIIFTRSAT 95 (406) Q Consensus 19 ~~~~~~iYld-~a~~~-~~~~~V~~a~~~~~~~~~~n~~~~~~~~~~-~~~~~~~~aR~~ia~~lga~~~~~v~ft~~~T 95 (406) T Consensus 30 vnG~~vinLsSNNYLGlA~hp~Lk~aA~~a~~~yGvGAGAVRTIaGTl~lH~eLE---~~LA~FK~teA--Al~fqSGF~ 104 (392) T TIGR01825 30 VNGKKVINLSSNNYLGLASHPRLKEAAKEAIQQYGVGAGAVRTIAGTLELHEELE---EKLAKFKKTEA--ALVFQSGFN 104 (392) T ss_pred ECCEEEEECCCCCCCCCCCCHHHHHHHHHHHHHCCCCCCCHHHHHHHHHHHHHHH---HHHHHHCCCCE--EEHHHCCHH T ss_conf 8885787404355455468876899999999865962241210433778999999---99875538201--101031223 Q ss_pred HHHHH-HHHHHHHHHHHCCC--CCCCCHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHCCC-------CC Q ss_conf 98765-43223444320134--4345401100001000012222322222222222221025788751023-------34 Q gi|254781062|r 96 ESINL-VSYGWGARHISTGD--EIVLSVMEHHSNIIPWYFLRQRRGASLVWVPIDNQGFFHIDEFKNRLTE-------RT 165 (406) Q Consensus 96 e~~n~-~~~~~~~~~~~~gd--~Vi~s~~eh~s~~~~~~~~~~~~G~~v~~i~~~~~g~id~~~l~~~i~~-------~t 165 (406) T Consensus 105 ~--N~GvlSa~----L~k~ddG~v~SdELNHASIIDG~RL----tkA~k~~y~-----H~dm~DL~~~l~e~~~~Gqy~~ 169 (392) T TIGR01825 105 T--NQGVLSAL----LRKGDDGIVLSDELNHASIIDGLRL----TKAKKKIYK-----HVDMDDLERVLRENVEEGQYKK 169 (392) T ss_pred H--HHHHHHHH----HCCCCCEEEEECCCCHHHHHHCCCC----CCCCEEEEE-----CCCHHHHHHHHHHCCCCCCCCC T ss_conf 7--79999876----2358871587200020345504223----788568984-----5984589999971603375443 Q ss_pred CCCCCCCCCCCCCCCCCCCCEECCCCCCCCCCCCCCCCCCCCC---------CCCHHHHCCCCCCCCCCCCCCCCCCCHH Q ss_conf 4332222222233333332100023444431012332000111---------0000110011222343222354443100 Q gi|254781062|r 166 KLIAITHMSNVLGTVIPIKEICRIAHERNIPVLVDGSQGSVHN---------FVDVQDIDCDWYIITGHKLYGPSGIGGL 236 (406) Q Consensus 166 ~lv~i~~~~~~tG~~~pi~~I~~~~~~~g~~~~vD~aq~~g~~---------~id~~~~~~D~~~~S~hK~~Gp~G~G~l 236 (406) T Consensus 170 ~l~vTDGVFSMDGdvApLp~iVE~Ae~Yda~~yVDDAHGsGVlGe~GrGtV~HFGL~y~~v~~qvGTLSKA~GvvG-GY~ 248 (392) T TIGR01825 170 KLIVTDGVFSMDGDVAPLPEIVELAEKYDALVYVDDAHGSGVLGEKGRGTVKHFGLEYDKVDIQVGTLSKAIGVVG-GYV 248 (392) T ss_pred EEEEECCEEECCCCCCCCCHHHHHHHHCCCEEEEECCCCCCCCCCCCCCEEECCCCCCCCEEEEECCHHHHHCCCC-CCC T ss_conf 6899665042567878873233463245957998633466444778871353037541646788555223222566-423 Q ss_pred HCCCCCCCCC----EEECCCCEEEEEEECCCCCCCCCHHCCCCCCCCCHHHHHHHHHCCCCCCCCCCCCCCCCCCCCCCC Q ss_conf 0256663100----121145303433202453003310000012212024566421012332222222222222222222 Q gi|254781062|r 237 YSKESRLNEM----DPFMGGSEMIADVTQDMVTYADLPYRFEPGTPPISQAIALGVALDYVEKIDRKSIFSYERELARYV 312 (406) Q Consensus 237 ~~~~~~~~~~----~p~~~g~~~~~~~~~~~~~~~~~~~r~e~Gt~~~~~~~al~~al~~~~~~g~~~i~~~~~~l~~~l 312 (406) T Consensus 249 AG~~~lidyL~~~aRPFLFS----------------------t-a~~Pa~~~A~~~Av~~l~~~--~~l~~kLW~Nt~yl 303 (392) T TIGR01825 249 AGSKELIDYLKARARPFLFS----------------------T-ALPPAVVAALIEAVDVLQES--PELMEKLWDNTRYL 303 (392) T ss_pred CCCHHHHHHHHHCCCCCCCC----------------------C-CCCHHHHHHHHHHHHHHCCC--CCHHHHHHHHHHHH T ss_conf 48889999998628986012----------------------5-78807899999999987079--31477767889999 Q ss_pred CCCCCCCCEEEECCCCCCCCCEEEEEECC-CCHHHHHHHHHHC-CCEEEECCHHHHHHHHHCCCCCEEEEEECCCCCHHH Q ss_conf 22222221013226852158679998089-9999999999878-969997521127889972899579999358889999 Q gi|254781062|r 313 RSRLKEVRGMQLVNESLEDSPIISFRLGN-IHPYDLALFLDGE-GIAIRAGTHCANPLLKFLGIDSLCRASLAMYNTYEE 390 (406) Q Consensus 313 ~~~L~~~~g~~i~~~~~~~~~iv~~~~~~-~~~~~v~~~L~~~-gI~v~~G~~ca~~~~~~~g~~~~iRiS~~~~nt~ed 390 (406) T Consensus 304 k~~L~~L-Gydl~~S---~tPItPv~~Gde~~A~efS~rL~~~yGvFa~sivFPT--V--p~g-~ARiR~~~tA~HTkd~ 374 (392) T TIGR01825 304 KAGLSKL-GYDLGES---ETPITPVLIGDEKVAQEFSRRLLDEYGVFAQSIVFPT--V--PRG-TARIRNIPTAEHTKDD 374 (392) T ss_pred HHHHHHH-CCCCCCC---CCCCCCEEECCCHHHHHHHHHHHHHCCEEEEEEECCC--C--CCC-CCCCCCCCCHHCCHHH T ss_conf 9876761-6411476---6861245876515689999987775290899842165--6--698-8421246561302667 Q ss_pred HHHHHHHHHHHHHHHC Q ss_conf 9999999999999719 Q gi|254781062|r 391 ADKFIETLKKSIQFFQ 406 (406) Q Consensus 391 id~~i~~l~~~i~~l~ 406 (406) T Consensus 375 L~~al~aye~~Gk~l~ 390 (392) T TIGR01825 375 LDQALDAYEKVGKELG 390 (392) T ss_pred HHHHHHHHHHHHHHHC T ss_conf 9999999998678725

HHsearch alignment for GI: 254781062 and conserved domain: TIGR01825