>cd06111 DsCS_like Cold-active citrate synthase (CS) from an Antarctic bacterial strain DS2-3R (Ds)-like. CS catalyzes the condensation of acetyl coenzyme A (AcCoA) and oxalacetate (OAA) to form citrate and coenzyme A (CoA), the first step in the citric acid cycle (TCA or Krebs cycle). 2-methylcitrate synthase (2MCS) catalyzes the condensation of propionyl-coenzyme A (PrCoA) and OAA to form 2-methylcitrate and coenzyme A (CoA) during propionate metabolism. The overall CS reaction is thought to proceed through three partial reactions: 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 c) the hydrolysis of citryl-CoA to produce citrate and CoA. DsCS, compared with CS from the hyperthermophile Pyrococcus furiosus (not included in this group), has an increase in the size of surface loops, a higher proline content in the loop regions, a more accessible active site, and a highe

Probab=100.00 E-value=0 Score=901.85 Aligned_cols=362 Identities=31% Similarity=0.538 Sum_probs=347.1 Q ss_pred CCCCCEEEEEEEEEEEECCCCEEEECCEEHHHHHHHCCHHHHHHHHHCCCCCCHHHHHHHHHHHHHCCCCCHHHHHHHHH Q ss_conf 88786238787565433447778989931999975089899999998187999899999999886406899899999985 Q gi|254780355|r 44 PAFSSTASCKSKITFIDGNNGILLYRGYPIEQLSEKSDFLEVCYLLLHGELANVSQQKDFNDKISRHALLNENMSRFFMG 123 (429) Q Consensus 44 pG~~~ta~ceS~IT~IDG~~G~L~YRGY~IedLa~~~sFeEVayLLl~GeLPt~~el~~F~~~l~~~~~lpe~v~~~i~~ 123 (429) T Consensus 1 ~GL~gv~~~et~Is~idg~~g~L~YRGy~i~dLa~~~~fEeva~LL~~G~LPt~~el~~f~~~l~~~~~lp~~v~~~l~~ 80 (362) T cd06111 1 KGLAGVVADTTAISKVMPETNSLTYRGYPVQDLAENCSFEEVAYLLWNGELPNAAQLAEFSQRERSYRRLDRNLLSLIAS 80 (362) T ss_pred CCCCCCEEEEEECEEEECCCCEEEECCEEHHHHHHCCCHHHHHHHHHCCCCCCHHHHHHHHHHHHHCCCCCHHHHHHHHH T ss_conf 99898566133582576899879998932999973499999999996898969999999999999827997999999986 Q ss_pred HCCCCCHHHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHHHHHHHHHHCC Q ss_conf 12476525789999999875206855767878898889999999999999999972798534888642468877876428 Q gi|254780355|r 124 FPSSAHPMAMLVSAVGALSSFYYSPSGVQDLEQCVNVSLRMIAKISTIAAMIYKYSIGQPFVYPRSDLDYASNFLHMCFS 203 (429) Q Consensus 124 ~p~~ahPM~~L~~~vsaL~a~~~~~~~~~d~~~~~~~a~rLiA~~p~i~A~~yr~~~G~~~i~Pd~~lsyaeNfL~Ml~~ 203 (429) T Consensus 81 ~p~~~hpm~~l~~~vs~l~~~d~~~~~-~~~~~~~~~a~~lia~~p~i~a~~~r~~~g~~~~~p~~~ls~a~nfl~ml~g 159 (362) T cd06111 81 LPKNCHPMDVLRTAVSVLGAEDSETDD-SSPDANLAKAIRLLAQLPTVVAADIRRRKGLDPIPPDSDLGIAENFLHMCFG 159 (362) T ss_pred HCCCCCCHHHHHHHHHHHHCCCCCCCC-CCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCHHHHHHHHHHHHCC T ss_conf 388878377899999998634976121-8979999999986508999999999996699987899407689999998637 Q ss_pred CCCCCCCCCHHHHHHHHHHHHEECCCCCCCHHHHHHHHHCCCCCHHHHHHHHHHHHHHHHHCCCCHHHHHHHHHCCCCCH Q ss_conf 98410147969999987563501367876301555544205654246776755421002220352899999862155351 Q gi|254780355|r 204 VPCAEYQVNPLLARAMNRIFILHADHEQNASTSTVRLAGSSGADPFACIAAGVACLGGRAHGGANEEALNMLMEIGSLER 283 (429) Q Consensus 204 ~~~~~~~~~~~~~~ald~~LILhADHe~NaSTft~R~vaSt~adlysai~agi~aL~GPlHGGAne~v~~ml~~I~~~~~ 283 (429) T Consensus 160 ~-----~p~~~~~ral~~~LiL~ADHg~NaSTfaaRvvaST~ad~ysav~aal~aL~GPLHGGAn~~v~~ml~ei~~~~~ 234 (362) T cd06111 160 E-----VPSPEVVRAFDVSLILYAEHSFNASTFTARVITSTLSDIYSAITGAIGALKGPLHGGANEAVMHMMLEIDDPEK 234 (362) T ss_pred C-----CCCHHHHHHHHHHHHHHHHCCCCHHHHHHHHHHCCCCCHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHCCHHH T ss_conf 9-----99899999999999997243687389999999658888899999999872788765678999999998378122 Q ss_pred HHHHHHHHHHCCCCCEEECCCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCC Q ss_conf 27999999821478614302774355554034689999999888608776517999999999996115314579877844 Q gi|254780355|r 284 IPHYIMRAKDKNDPFRIMGFGHRVYRNHDPRCRIMRETMYEVLEVTGRFNDPIAQVAIELERIALEDEYFIERKLYPNVD 363 (429) Q Consensus 284 v~~~i~~~~~~~~~~ri~GfGHrvyk~~DPRa~~l~~~~~~l~~~~~~~~~~~~~~a~~le~~a~~d~~~~~r~l~pNvD 363 (429) T Consensus 235 ~~~~i~~~l~~~~--~i~GFGHrvYk~~DPRa~~l~~~~~~l~~~~~--~~~~~~~~~~~e~~~~-----~~k~l~pNVD 305 (362) T cd06111 235 AAQWMLDALARKE--KVMGFGHRVYKSGDSRVPTMEKALRRVAAVHD--GQKWLAMYDALEDAMV-----AAKGIKPNLD 305 (362) T ss_pred HHHHHHHHHHCCC--CCCCCCCCCCCCCCCCHHHHHHHHHHHHHHCC--CHHHHHHHHHHHHHHH-----HHCCCCCCCH T ss_conf 6999999984688--77888875577889505999999999876228--7069999999999999-----8479998821 Q ss_pred HHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCCCCC Q ss_conf 78899999849996685899999999899999999970789830045621058876870 Q gi|254780355|r 364 FYSGITLRALGFPTNLFTVLFAVARTAGWVSQWTEMIVDPSRRIGRPRQLYTGALKRDY 422 (429) Q Consensus 364 fysg~i~~~lGip~~~ft~iFa~~R~~Gw~AH~~Eq~~~~~~ri~RP~~~Y~G~~~r~y 422 (429) T Consensus 306 fys~~l~~~lGip~~~~t~lFa~sR~~GW~AH~~Eq~~~--~~liRP~~~YvGp~~r~~ 362 (362) T cd06111 306 FPAGPAYYLMGFDIDFFTPIFVMARITGWTAHIMEQRAD--NALIRPLSEYNGPEQRPV 362 (362) T ss_pred HHHHHHHHHHCCCHHHHHHHHHHHHHHHHHHHHHHHHHC--CCCCCCCCCCCCCCCCCC T ss_conf 689999999198856778999999999999999999867--985389871429799999

HHsearch alignment for GI: 254780355 and conserved domain: cd06111