>TIGR00408 proS_fam_I prolyl-tRNA synthetase; InterPro: IPR004499 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 . Prolyl-tRNA synthetase is a class II tRNA synthetase and is recognized by IPR002314 from INTERPRO, which recognises tRNA synthetases for Gly, His, Ser, and Pro. The prolyl-tRNA synthetases are divided into two widely divergent families. This family includes the archaeal enzyme, the Pro-specific domain of a human multifunctional tRNA ligase, and the enzyme from the spirochete Borrelia burgdorferi (Lyme desease spirochete). The other family, IPR004500 from INTERPRO, includes enzymes from Escherichia coli, Bacillus subtilis, Synechocystis sp. (strain PCC6803), and one of the two prolyl-tRNA synthetases of Saccharomyces cerevisiae (Baker's yeast).; GO: 0000166 nucleotide binding, 0004827 proline-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006433 prolyl-tRNA aminoacylation, 0005737 cytoplasm.

Probab=99.29 E-value=1.4e-11 Score=106.90 Aligned_cols=258 Identities=20% Similarity=0.285 Sum_probs=208.1 Q ss_pred CHHHHCCCCCHHHHHHHCCCCCEEECCHHHHHHHHHHHHHHHHHHHHC-------------------CCCEEHHHHHCCH Q ss_conf 202211731000112221675301056488999999999998622320-------------------3202123562027 Q gi|254780680|r 143 EIGEALGLMDFDRATKLSGARFSVLTGHLAHLERALGQFMIDLHTSEH-------------------GYTEVSAPLLVRD 203 (430) Q Consensus 143 elge~l~liDfe~a~kvsGsrF~~Lkg~~A~Le~ALi~y~ld~~~~~~-------------------Gy~~v~~P~lv~~ 203 (430) T Consensus 14 ~il~kAel~d~RypV--KG--~~v~~P~g~~iw~~iq~~-~~~~~~~~~~~~~~~L~~F~P~~~~~Y~h~~v~fP~L~p~ 88 (533) T TIGR00408 14 QILQKAELIDYRYPV--KG--CYVFLPYGFKIWENIQKI-LRDKLDEIKLKDKVILKKFIPIESLPYGHEEVYFPMLIPE 88 (533) T ss_pred HHHHCCEEEEECCCC--CC--EEEECCCCHHHHHHHHHH-HHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHEECCCCCCH T ss_conf 987305576641760--10--378459877899999999-9999987643546766405677777777001005644525 Q ss_pred HHHHHHH-HCHHHHHHHHHHH--------HCCEECCCCCCHHHHHHHHHCCCHHHHCCEEEEEECCCCCCCCCCCCCCCC Q ss_conf 8898655-1422476776431--------000231345411454453420595550420885322107884335543432 Q gi|254780680|r 204 EAMYGTG-QIPKFADDMFCTT--------DGRWLIPTSEVSLTNLYSHEIIESKSLPLRFTTLAPSFRSEAGSAGRDTRG 274 (430) Q Consensus 204 ~~~~gtG-~lp~f~~~~y~~~--------d~l~Li~TaEvpL~~~~~~~~l~~~~LPik~~~~s~cfR~EaGs~GkdtrG 274 (430) T Consensus 89 ~~L~KEk~HikGF~pEv~wi~~~G~~~L~~pLaLRPTSEt~~y~m~~kWv~sy~DLPlk~nQw~~vfR~E~----kHTRP 164 (533) T TIGR00408 89 SELEKEKDHIKGFEPEVYWITHGGLKKLDEPLALRPTSETAMYNMYKKWVKSYRDLPLKINQWVNVFRYEK----KHTRP 164 (533) T ss_pred HHHHHHCCCCCCCCCHHHHEECCCCCCCCCCCEECCCCHHHHHHHHHHHHHHCCCCCEEEEEEEEEEECCC----CCCCC T ss_conf 57863213568858400210103777246750125861788876578785121588768984358898021----78786 Q ss_pred EEEEEEEE-EEEEE-ECCCCCCHHHHHHHHHHHHHHHHH-HHCCHHHHCCCCCHHCCCHHHEEEEEEEECCCCCCEEEEE Q ss_conf 12222102-00212-127865014578989999999999-8410675303780117844340241011010048332375 Q gi|254780680|r 275 MLRQHQFW-KCELV-SITREEDSFTEHERMLSCAEEILK-RLDLHYRVVSLCTGDLGFSACKTYDLEVWLAGQNLYREIS 351 (430) Q Consensus 275 l~RvHQF~-KVE~~-~~~~pe~S~~~~e~~~~~~~~i~~-~L~lpyRvv~~~sgdlg~~a~~~~DiE~w~P~~~~y~Ev~ 351 (430) T Consensus 165 flR~rEf~twqE~HT~H~t~~eAee~v~~~~~~Yk~f~~~~LaIP~~~g~k~E~eKFaGA~~T~~~e~imPDgG~~LQ~A 244 (533) T TIGR00408 165 FLRTREFLTWQEAHTAHATAEEAEEEVLKALDLYKEFIENLLAIPYFVGRKSEKEKFAGAEYTWTFETIMPDGGRTLQIA 244 (533) T ss_pred CHHHHHHHCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHHHCCCCCEEEECCCCCCCCCCCCCCEEEEEECCCCCEEHHHH T ss_conf 10233321010001314377788999999999889997502886468714887554788762235675247765001221 Q ss_pred EECCCCCHHHHHCCCEEECCCC---CCCCEEEEECCCHHHHHHHHHHHHHHCCCCCCCEECCCCC Q ss_conf 3102100764532684733899---8410104200432289999999988346899838658222 Q gi|254780680|r 352 SCSTCGNFQSRRMNSRYRDPNS---KSLKFTHTLNGSGVAVGRCLIAILENYLNADGSVTIPTVL 413 (430) Q Consensus 352 S~Snc~D~QsrRl~iry~~~~~---~~~~~~htlNgt~~A~~R~l~ailEn~q~~dg~i~iP~~L 413 (430) T Consensus 245 TsH~LGqnF~K~F~i~fe~p~Gs~~~~-~~ayq~-s~G~-StR~igali~~HsD~~GLV-LPp~v 305 (533) T TIGR00408 245 TSHDLGQNFAKTFDIKFENPTGSDMDK-VYAYQT-SYGI-STRVIGALILIHSDEKGLV-LPPRV 305 (533) T ss_pred HHHHHHCCCEEEEEEEEECCCCCCCCC-CCCEEC-CCCH-HHHHHHHEEEEECCCCCCC-CCCCC T ss_conf 211330354020367887788897641-010010-1335-7887545000122677751-67012

HHsearch alignment for GI: 254780680 and conserved domain: TIGR00408