>cd06102 citrate_synt_like_2 Citrate synthase (CS) catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the oxidative citric acid cycle (TCA or Krebs cycle). Peroxisomal CS is involved in the glyoxylate cycle. This group also includes CS proteins which functions as a 2-methylcitrate synthase (2MCS). 2MCS catalyzes the condensation of propionyl-CoA (PrCoA) and OAA to form 2-methylcitrate and CoA during propionate metabolism. This group contains proteins which functions exclusively as either a CS or a 2MCS, as well as those with relaxed specificity which have dual functions as both a CS and a 2MCS. The overall CS reaction is thought to proceed through three partial reactions and involves both closed and open conformational forms of the enzyme: a) the carbanion or equivalent is generated from AcCoA by base abstraction of a proton, b) the nucleophilic attack of this carbanion on OAA to generate citryl-CoA, and

Probab=100.00 E-value=0 Score=637.55 Aligned_cols=266 Identities=31% Similarity=0.434 Sum_probs=232.8 Q ss_pred CEEEEEEEEEEEECCCCEEEECCEEHHHHHHHCCHHHHHHHHHCCCCCCHHHHHHHHHHHHHCCCCCHHHHHHHHHHCCC Q ss_conf 62387875654334477789899319999750898999999981879998999999998864068998999999851247 Q gi|254780355|r 48 STASCKSKITFIDGNNGILLYRGYPIEQLSEKSDFLEVCYLLLHGELANVSQQKDFNDKISRHALLNENMSRFFMGFPSS 127 (429) Q Consensus 48 ~ta~ceS~IT~IDG~~G~L~YRGY~IedLa~~~sFeEVayLLl~GeLPt~~el~~F~~~l~~~~~lpe~v~~~i~~~p~~ 127 (429) T Consensus 17 G~pv~~S~Is~i~~--g~L~YRG~~~~~LAe~asfEevA~LLw~g~~p-------------------------------- 62 (282) T cd06102 17 GEPVLESAITLITE--GRLFYRGRDAVELAETATLEEVAALLWDGDEA-------------------------------- 62 (282) T ss_pred CCEEEECEEEEEEC--CEEEECCCCHHHHHHCCCHHHHHHHHHCCCCH-------------------------------- T ss_conf 78143010059879--98689991399998239899999999779876-------------------------------- Q ss_pred CCHHHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHHCCCCCC Q ss_conf 65257899999998752068557678788988899999999999999999727985348886424688778764289841 Q gi|254780355|r 128 AHPMAMLVSAVGALSSFYYSPSGVQDLEQCVNVSLRMIAKISTIAAMIYKYSIGQPFVYPRSDLDYASNFLHMCFSVPCA 207 (429) Q Consensus 128 ahPM~~L~~~vsaL~a~~~~~~~~~d~~~~~~~a~rLiA~~p~i~A~~yr~~~G~~~i~Pd~~lsyaeNfL~Ml~~~~~~ 207 (429) T Consensus 63 ---~~~lr~~~~~~~~~~~~~------------------------------------------~~~~~~l~~~~------ 91 (282) T cd06102 63 ---ARLLRLLAAALLGAAPSD------------------------------------------APVHRRLARAW------ 91 (282) T ss_pred ---HHHHHHHHHHHCCCCCCC------------------------------------------CHHHHHHHHHC------ T ss_conf ---799999999845789874------------------------------------------56999999981------ Q ss_pred CCCCCHHHHHHHHHHHHEECCCCCCCHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHCCCCCHHHHH Q ss_conf 01479699999875635013678763015555442056542467767554210022203528999998621553512799 Q gi|254780355|r 208 EYQVNPLLARAMNRIFILHADHEQNASTSTVRLAGSSGADPFACIAAGVACLGGRAHGGANEEALNMLMEIGSLERIPHY 287 (429) Q Consensus 208 ~~~~~~~~~~ald~~LILhADHe~NaSTft~R~vaSt~adlysai~agi~aL~GPlHGGAne~v~~ml~~I~~~~~v~~~ 287 (429) T Consensus 92 --~~~~~~~~~l~~aLiL~ADH~~naSTfaaRv~aST~ad~ysav~agi~aL~GPlHGGAne~v~~ml~ei~~~~~~~~~ 169 (282) T cd06102 92 --GLDPAAADLLRRALVLLADHELNASTFAARVAASTGASLYAAVLAGLAALSGPRHGGATARVEALLDEALRAGDAEAA 169 (282) T ss_pred --CCCCHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHCCCCHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHCCCCCHHHH T ss_conf --799507899999897853568756999999999249978999999998766976678799999999985586448999 Q ss_pred HHHHHHCCCCCEEECCCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHHH Q ss_conf 99998214786143027743555540346899999998886087765179999999999961153145798778447889 Q gi|254780355|r 288 IMRAKDKNDPFRIMGFGHRVYRNHDPRCRIMRETMYEVLEVTGRFNDPIAQVAIELERIALEDEYFIERKLYPNVDFYSG 367 (429) Q Consensus 288 i~~~~~~~~~~ri~GfGHrvyk~~DPRa~~l~~~~~~l~~~~~~~~~~~~~~a~~le~~a~~d~~~~~r~l~pNvDfysg 367 (429) T Consensus 170 i~~~l~~~~--~i~GFGHrvYk~~DPRA~~L~~~~~~l~~-------~~~~~~~~~~~~~~~-----~~~~~pNVDfys~ 235 (282) T cd06102 170 VRERLRRGE--ALPGFGHPLYPDGDPRAAALLAALRPLGP-------AAPPAARALIEAARA-----LTGARPNIDFALA 235 (282) T ss_pred HHHHHHCCC--CCCCCCCCCCCCCCCHHHHHHHHHHHHCC-------CHHHHHHHHHHHHHH-----HHCCCCCHHHHHH T ss_conf 999997699--86688887689899439999999998641-------058999999999999-----7589998187899 Q ss_pred HHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCC Q ss_conf 9999849996685899999999899999999970789830045621058 Q gi|254780355|r 368 ITLRALGFPTNLFTVLFAVARTAGWVSQWTEMIVDPSRRIGRPRQLYTG 416 (429) Q Consensus 368 ~i~~~lGip~~~ft~iFa~~R~~Gw~AH~~Eq~~~~~~ri~RP~~~Y~G 416 (429) T Consensus 236 ~l~~~lGip~~~~t~iFai~R~~GW~AH~~Eq~~~--~~liRPr~~YvG 282 (282) T cd06102 236 ALTRALGLPAGAAFALFALGRSAGWIAHALEQRAQ--GKLIRPRARYVG 282 (282) T ss_pred HHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHC--CCCCCCCCCCCC T ss_conf 99998499903112699999999999999999857--985588771469

HHsearch alignment for GI: 254780355 and conserved domain: cd06102