>TIGR00414 serS seryl-tRNA synthetase; InterPro: IPR002317 The aminoacyl-tRNA synthetases (6.1.1. from EC) catalyse the attachment of an amino acid to its cognate transfer RNA molecule in a highly specific two-step reaction. These proteins differ widely in size and oligomeric state, and have limited sequence homology . The 20 aminoacyl-tRNA synthetases are divided into two classes, I and II. Class I aminoacyl-tRNA synthetases contain a characteristic Rossman fold catalytic domain and are mostly monomeric . Class II aminoacyl-tRNA synthetases share an anti-parallel beta-sheet fold flanked by alpha-helices , and are mostly dimeric or multimeric, containing at least three conserved regions , , . However, tRNA binding involves an alpha-helical structure that is conserved between class I and class II synthetases. In reactions catalysed by the class I aminoacyl-tRNA synthetases, the aminoacyl group is coupled to the 2'-hydroxyl of the tRNA, while, in class II reactions, the 3'-hydroxyl site is preferred. The synthetases specific for arginine, cysteine, glutamic acid, glutamine, isoleucine, leucine, methionine, tyrosine, tryptophan and valine belong to class I synthetases; these synthetases are further divided into three subclasses, a, b and c, according to sequence homology. The synthetases specific for alanine, asparagine, aspartic acid, glycine, histidine, lysine, phenylalanine, proline, serine, and threonine belong to class-II synthetases . Seryl-tRNA synthetase (6.1.1.11 from EC) exists as monomer and belongs to class IIa .; GO: 0000166 nucleotide binding, 0004828 serine-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006434 seryl-tRNA aminoacylation, 0005737 cytoplasm.

Probab=100.00 E-value=0 Score=765.36 Aligned_cols=417 Identities=49% Similarity=0.835 Sum_probs=401.1 Q ss_pred CCCH---HHHHCCHHHHHHHHHHCCCCC--CHHHHHHHHHHHHHHHHHHHHHH--HHHHHHHHHHHH--HHHCCCHHHHH Q ss_conf 9884---478519999999998469895--88999999999999999999999--999999999999--86449987999 Q gi|254780680|r 1 MLDI---QWIRQNPEHLDIALKKRHLEP--QSEYILSLDEKNRILIKKIEDIR--ARRNSNSAQIGQ--AIAEGNLSLVD 71 (430) Q Consensus 1 MLDi---k~IRen~e~v~~~l~~R~~~~--~id~il~Ld~~rr~l~~e~e~Lr--aerN~lSKeIg~--~k~~~~~~~~~ 71 (430) T Consensus 1 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~l~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 80 (460) T TIGR00414 1 MLDLRLLKLLRNNPDLVKESLKARGLSLDIDLEKLIALDDKRKKLLSELEELNLLAKRNELSKEIGKKLKKGEKKDKLIE 80 (460) T ss_pred CCCHHHHHHHCCCHHHHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHH T ss_conf 95446788741367888988875111124457788888889998887777888888776668888888764210111124 Q ss_pred H---HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCC------CCCHHHHCCCCCCCE--------EEEEECCC--C Q ss_conf 9---999999999886444666667788877443100225------881122113555402--------42000156--5 Q gi|254780680|r 72 A---LKNETSTLKEQLPILEKEEHEVCSSLKKLISCIPNV------PLEEVPIGTSANENI--------LIRSVGKK--P 132 (430) Q Consensus 72 ~---Lk~e~~~Lk~eik~le~~~~~le~el~~lll~IPNi------~~~~VP~G~de~dNv--------~i~~~G~~--~ 132 (430) T Consensus 81 ~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~p~~~~~~~~~~~~~p~g~~~~~~~~~~~w~~~~~~~~~~~~~~ 160 (460) T TIGR00414 81 EGKALKKELKELKEELTELEAALKALEEELEDLLLSIPNLKKKILEPHESVPVGKDEEDNLPVKYWYDEEVKKWGTPPLP 160 (460) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCHHHHHHHCCCCCCCCCCCCCCCEEHHHHHHHHHHHHCCCCC T ss_conf 67899998876778888876778889999888875234024555301444567887544520001001356664100122 Q ss_pred CCCCCCC--CCCCHHHHCCCCCHHHHHHHCCCCCEEECCHHHHHHHHHHHHHHHHHHHHCCCCEEHHHHHCCHHHHHHHH Q ss_conf 6656662--11220221173100011222167530105648899999999999862232032021235620278898655 Q gi|254780680|r 133 SAIHLSR--EHFEIGEALGLMDFDRATKLSGARFSVLTGHLAHLERALGQFMIDLHTSEHGYTEVSAPLLVRDEAMYGTG 210 (430) Q Consensus 133 ~f~f~~k--~H~elge~l~liDfe~a~kvsGsrF~~Lkg~~A~Le~ALi~y~ld~~~~~~Gy~~v~~P~lv~~~~~~gtG 210 (430) T Consensus 161 ~~~~~~~~~~h~~~~~~~~~~d~~~~~~~~g~~~~~~~~~~~~~~~al~~~~l~~~~~~~g~~~~~~p~~~~~~~~~~~g 240 (460) T TIGR00414 161 SFDFKPKDLPHWELGEKLGLLDFERAVKLAGSRFYYLKGDGAKLERALINFMLDLLREKNGYSELYPPYLVNEELLDGTG 240 (460) T ss_pred CCCCCCCCCHHHHHHHHCCCCCHHHHHHHHCCHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCEECCCHHHHHHHHHHCC T ss_conf 00133111215678877065101333344101012132136789999999999864432264010140354234431024 Q ss_pred ---HCHHHHHHHHHHHH-C---CEECCCCCCHHHHHHHHHCCCH--HHHCCEEEEEECCCCCCCCCCCCCCCCEEEEEEE Q ss_conf ---14224767764310-0---0231345411454453420595--5504208853221078843355434321222210 Q gi|254780680|r 211 ---QIPKFADDMFCTTD-G---RWLIPTSEVSLTNLYSHEIIES--KSLPLRFTTLAPSFRSEAGSAGRDTRGMLRQHQF 281 (430) Q Consensus 211 ---~lp~f~~~~y~~~d-~---l~Li~TaEvpL~~~~~~~~l~~--~~LPik~~~~s~cfR~EaGs~GkdtrGl~RvHQF 281 (430) T Consensus 241 ~~~~~~~~~~~~~~~~~~~~~~~~l~~t~e~~~~~~~~~~~~~~~~~~lp~~~~~~~~cfr~eag~~g~~~~g~~r~h~f 320 (460) T TIGR00414 241 FNPQLPKFEEDLFKLEDTDDEKLYLIPTAEVPLTNLHRDEILDLPSEELPIKYTGYSPCFRSEAGSYGKDTKGLIRVHQF 320 (460) T ss_pred CCCCCCCHHHHHHHHCCCCCCEEEEEECCHHHHHHHHHHHHCCCCCCCCCEEHCCCCHHHHHHCCCCCCCCHHHHHHHHC T ss_conf 56556530234432126777504652010001222220001026521034000002202333213455410001211100 Q ss_pred EEEEEEECCCCCCHHHHHHHHHHHHHHHHHHHCCHHHHCCCCCHHCCCHHHEEEEEEEECCCCC--CEEEEEEECCCCCH Q ss_conf 2002121278650145789899999999998410675303780117844340241011010048--33237531021007 Q gi|254780680|r 282 WKCELVSITREEDSFTEHERMLSCAEEILKRLDLHYRVVSLCTGDLGFSACKTYDLEVWLAGQN--LYREISSCSTCGNF 359 (430) Q Consensus 282 ~KVE~~~~~~pe~S~~~~e~~~~~~~~i~~~L~lpyRvv~~~sgdlg~~a~~~~DiE~w~P~~~--~y~Ev~S~Snc~D~ 359 (430) T Consensus 321 ~k~e~~~~~~p~~~~~~~~~~~~~~~~~~~~l~~p~~~~~~~~gd~g~~~~~~yd~e~W~p~~~gg~y~e~~~~~~~~d~ 400 (460) T TIGR00414 321 NKVELVKFCKPEESWEELEELLSDAEKILQELELPYRVLNLCTGDLGFGAAKKYDLEVWLPGQNGGTYREISSCSNCTDF 400 (460) T ss_pred CCEEEEEEECCHHHHHHHHHHHHHHHHHHHHHCCCHHHHEECCCCCCCCCCCCEEEEEEEECCCCCCCCEECCCCCCHHH T ss_conf 31024566354014899999987899999974375111000124346420110100134104678741100012331145 Q ss_pred HHHHCCCEEECCCCCC--CCEEEEECCCHHHHHHHHHHHHHHCCCCCCCEECCCCCCCCC Q ss_conf 6453268473389984--101042004322899999999883468998386582223101 Q gi|254780680|r 360 QSRRMNSRYRDPNSKS--LKFTHTLNGSGVAVGRCLIAILENYLNADGSVTIPTVLRPYM 417 (430) Q Consensus 360 QsrRl~iry~~~~~~~--~~~~htlNgt~~A~~R~l~ailEn~q~~dg~i~iP~~L~pym 417 (430) T Consensus 401 ~~~~~~~~~~~~~~~~~~~~~~~~lng~~~~~~r~~~~~~en~~~~~g~~~~p~~l~~~~ 460 (460) T TIGR00414 401 QARRLNIRYKDKGGGKRENEYVHTLNGTALAVGRTLVAILENYQDEDGSVEVPEVLRKYL 460 (460) T ss_pred HHHHHHHHHHHCCCCCCCCCEEEECCCCHHHHHHHHHHHHHHHCCCCCCEECHHHHHCCC T ss_conf 666544333220366532100010033123456788877764105577454125541139

HHsearch alignment for GI: 254780680 and conserved domain: TIGR00414