HHsearch alignment for GI: 254780285 and conserved domain: TIGR00392
>TIGR00392 ileS isoleucyl-tRNA synthetase; InterPro: IPR002301 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 . Isoleucyl-tRNA synthetase (6.1.1.5 from EC) is an alpha monomer that belongs to class Ia. The enzyme, isoleucyl-transfer RNA synthetase, activates not only the cognate substrate L-isoleucine but also the minimally distinct L-valine in the first, aminoacylation step. Then, in a second, "editing" step, the synthetase itself rapidly hydrolyzes only the valylated products , as shown from the crystal structures. ; GO: 0000166 nucleotide binding, 0004822 isoleucine-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006428 isoleucyl-tRNA aminoacylation, 0005737 cytoplasm.
Probab=95.99 E-value=0.015 Score=36.94 Aligned_cols=137 Identities=20% Similarity=0.326 Sum_probs=78.7
Q ss_pred CCCCCEECCCCCCCCCCCCCHHHHHHHHHHHHHHHHHHHCCCCCCEEECCCCCCHHHHHHHHHHHHHHHHHCCCCCCCCC
Q ss_conf 65541000223443224411777778568999999998506664102014775314555678987532221024500066
Q gi|254780285|r 118 GKGTKVNIEFVSANPTGPMHVGHCRCAVVGDTLASLMAFSGYEVTREYYINDAGAQINTLALSVFWRYQQALYNNDSDLP 197 (586)
Q Consensus 118 ~~~~kVvVE~sSpNp~KplHVGHlRsaiIGdsi~ril~~~G~~V~r~nyvgD~G~Q~~~li~~~~~~~~~~~~~~~~~~~ 197 (586)
T Consensus 34 ~~~~F~lhD-GPPYAnG~iHlGHalNKilKDii~Ryk~m~G~~v~~~pGWDtHGLPIE~~V------------------- 93 (938)
T TIGR00392 34 DKPEFVLHD-GPPYANGAIHLGHALNKILKDIILRYKTMQGYNVTYKPGWDTHGLPIELKV------------------- 93 (938)
T ss_pred CCCCEEEEC-CCCCCCCCCCHHHHHHHHHHHHHHHHCCCCCEECCCCCCCCCCCCCEEEEE-------------------
T ss_conf 998358744-858767997402556667611232101122500320478665787024456-------------------
Q ss_pred HHHCCCCCHHHHHHHHHHHHHHHHHCCC-CHHHHHHHHHHHHHHHHHHHHHHHHHCCCCCCCEECHHHHHHCCH---HHH
Q ss_conf 0110241000012788888757641343-023799999997899887545558870875210001588730104---579
Q gi|254780285|r 198 EGYYPGVYLKHVGKELADKYSSELLNFP-EEKWLPIVKDYSVQAMMKIIRDDLKALNIQHDIFISEDDFHRGDP---SPI 273 (586)
Q Consensus 198 e~~~~~~y~~~~~~e~~~~~~~~~~~~~-e~~~~~~~~~~~~~~~~~~~~~~l~~l~i~fD~~~~Es~~~~~~~---~~i 273 (586)
T Consensus 94 ------------ek~lg~~~~~~~~~~~g~E~fr~~Cr~~-A~~~~~~q~~~F~rLG~w~Dw---e~pY~T~d~~y~~~~ 157 (938)
T TIGR00392 94 ------------EKKLGISGKKEIESLEGIEEFREKCREF-ALKQIEEQREQFQRLGVWGDW---ENPYKTMDPSYEESQ 157 (938)
T ss_pred ------------ECCCCCCCCCCCCHHHHHHHHHHHHHHH-HHHHHHHHHHHHHHCEEECCC---CCCCCCCCHHHHHHH
T ss_conf ------------4047876400022044389999999999-999999999888853120225---578506788999999
Q ss_pred HHHHHHHHHCCCCCCCC
Q ss_conf 99999999749851134
Q gi|254780285|r 274 RDIIDNLARQGYVYEGI 290 (586)
Q Consensus 274 ~~~i~~l~~~g~~~e~~ 290 (586)
T Consensus 158 w~~l~~~~eKGL~~~~~ 174 (938)
T TIGR00392 158 WWLLKELHEKGLLYRGL 174 (938)
T ss_pred HHHHHHHHHCCCEEECC
T ss_conf 99999997524202255