>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=93.31 E-value=0.11 Score=29.34 Aligned_cols=214 Identities=20% Similarity=0.179 Sum_probs=119.4 Q ss_pred HHHHHHHHHHHHHHHHHC-------------------CCEEEECCCEECCCCC---CCCCCCEE-----EECCCCCCCCC Q ss_conf 999999999999999987-------------------9889847821056898---54454124-----10247886783 Q gi|254781066|r 22 LLKRNMIQSSLREYFVEN-------------------QFIEIDSMSLQYSPGN---ETHIRAFS-----TELIIQDHIRK 74 (355) Q Consensus 22 l~~Rs~i~~~iR~ff~~~-------------------gF~EV~TPiL~~~~~g---~~~~~~f~-----t~~~~~~~~~~ 74 (355) T Consensus 39 ~~iw~~iq~~~~~~~~~~~~~~~~~L~~F~P~~~~~Y~h~~v~fP~L~p~~~L~KEk~HikGF~pEv~wi~~~G~~~L~~ 118 (533) T TIGR00408 39 FKIWENIQKILRDKLDEIKLKDKVILKKFIPIESLPYGHEEVYFPMLIPESELEKEKDHIKGFEPEVYWITHGGLKKLDE 118 (533) T ss_pred HHHHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCCCCCHHEECCCCCCHHHHHHHCCCCCCCCCHHHHEECCCCCCCCC T ss_conf 78999999999999987643546766405677777777001005644525578632135688584002101037772467 Q ss_pred CCCCCCCHHH-----HHHHHHHHHHH---HHHHHHHHHCCCC-CCC--CCCCCEE-EECEEECCCCHHHHHHHHHHHH-- Q ss_conf 2000028589-----99989874468---8999886424567-775--4484300-2000115776578777557888-- Q gi|254781066|r 75 PLYLQTSPEF-----SCKKLLAAGEE---KIFCFAHAWRNGE-QGC--LHQPEFT-MLEWYRAHESYEQLMKDCMNII-- 140 (355) Q Consensus 75 ~~yL~~SPql-----~lK~ll~~G~~---rvyqig~~FRaE~-~~~--rHlpEFt-mLE~e~af~d~~dlm~~~E~li-- 140 (355) T Consensus 119 pLaLRPTSEt~~y~m~~kWv~-sy~DLPlk~nQw~~vfR~E~kHTRPflR~rEf~twqE~HT~H~t~~eAee~v~~~~~~ 197 (533) T TIGR00408 119 PLALRPTSETAMYNMYKKWVK-SYRDLPLKINQWVNVFRYEKKHTRPFLRTREFLTWQEAHTAHATAEEAEEEVLKALDL 197 (533) T ss_pred CCEECCCCHHHHHHHHHHHHH-HCCCCCEEEEEEEEEEECCCCCCCCCHHHHHHHCCCCCCCCCCCHHHHHHHHHHHHHH T ss_conf 501258617888765787851-2158876898435889802178786102333210100013143777889999999998 Q ss_pred -HHHHH-HHCCCEECCCCCCCCCCCCCCCCCHHHHHHHHCCCCCCCCCCCCCCCCHHHHHHHHHHCCCCCCCCCCHHHHH Q ss_conf -77666-4188300022343324677320788886566608765323455562327999999997688778765347898 Q gi|254781066|r 141 -RCAAE-VANQKIFSFQNVNCNPFSEPEYITVAEAFARYANIDLGTTLDNPDQPDRHLLYLQAQQAGIRVAHDDTWSDIF 218 (355) Q Consensus 141 -~~~~~-~~~~~~~~~~~~~~~~~~~~~~i~~~e~~~~~~~~d~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~ 218 (355) T Consensus 198 Yk~f~~~~LaIP~~~g~------k~E~---------eKFaGA~~T~~~e~i-mPDg--------G~~LQ~ATsH~LGqnF 253 (533) T TIGR00408 198 YKEFIENLLAIPYFVGR------KSEK---------EKFAGAEYTWTFETI-MPDG--------GRTLQIATSHDLGQNF 253 (533) T ss_pred HHHHHHHCCCCCEEEEC------CCCC---------CCCCCCCCCEEEEEE-CCCC--------CEEHHHHHHHHHHCCC T ss_conf 89997502886468714------8875---------547887622356752-4776--------5001221211330354 Q ss_pred HHHHHCEECCCCCCCC-CCCCCC--CCHH---HHHHCCCCCCCCCCCC Q ss_conf 7664300362237675-443257--6888---8641367877836330 Q gi|254781066|r 219 SRILIEKIEPNLGINC-CTILDR--YPAP---ESALANIYPADPRFTK 260 (355) Q Consensus 219 ~~l~~~~ie~~l~~~~-pvfi~~--yP~~---~~plak~~~~~~~va~ 260 (355) T Consensus 254 ~K~F~i~fe~p~Gs~~~~~~ayq~s~G~StR~igali~~HsD~~GLVL 301 (533) T TIGR00408 254 AKTFDIKFENPTGSDMDKVYAYQTSYGISTRVIGALILIHSDEKGLVL 301 (533) T ss_pred EEEEEEEEECCCCCCCCCCCCEECCCCHHHHHHHHEEEEECCCCCCCC T ss_conf 020367887788897641010010133578875450001226777516

HHsearch alignment for GI: 254781066 and conserved domain: TIGR00408