HHsearch alignment for GI: 254780445 and conserved domain: TIGR00464

>TIGR00464 gltX_bact glutamyl-tRNA synthetase; InterPro: IPR004527 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 . Glutamyl-tRNA synthetase (6.1.1.17 from EC) is a class Ic synthetase and shows several similarities with glutaminyl-tRNA synthetase concerning structure and catalytic properties. It is an alpha2 dimer. To date one crystal structure of a glutamyl-tRNA synthetase (Thermus thermophilus) has been solved. The molecule has the form of a bent cylinder and consists of four domains. The N-terminal half (domains 1 and 2) contains the 'Rossman fold' typical for class I synthetases and resembles the corresponding part of E. coli GlnRS, whereas the C-terminal half exhibits a GluRS-specific structure . ; GO: 0000166 nucleotide binding, 0004818 glutamate-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006424 glutamyl-tRNA aminoacylation, 0005737 cytoplasm.
Probab=94.67  E-value=0.086  Score=30.53  Aligned_cols=91  Identities=20%  Similarity=0.253  Sum_probs=53.0

Q ss_pred             CCCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCHHHHHHHHHHHHCCCCHHHCCHHHHHHHHHHHHHHHH
Q ss_conf             25588976215778566878998767089826788882444208999999987655998334899999999999999999
Q gi|254780445|r   63 PYANGHIHIGHALNKILKDVIVRSFQMRNFNACFVPGWDCHGLPIEWKVENEYLAKGKKKDDIPVNEFRQACRDSASAWV  142 (963)
Q Consensus        63 Py~nG~lH~GH~~n~~~kDi~~Ry~rm~G~~Vl~~~GwD~hGLPiE~~vek~l~~~~~~~~~~~~~~~~~~c~~~a~~~i  142 (963)
T Consensus         8 PSPTG~LHiGg~RTAlFNyLfAr--~~~G~F~lRi----------E---------------DTD~e-------R~~~e~~   53 (513)
T TIGR00464         8 PSPTGYLHIGGARTALFNYLFAR--HTGGKFILRI----------E---------------DTDLE-------RNIEEAE   53 (513)
T ss_pred             CCCCCCCCHHHHHHHHHHHHHHH--HCCCCEEEEE----------E---------------ECCCC-------CCCHHHH
T ss_conf             88875435336899999999998--6389379987----------5---------------36710-------0724468


Q ss_pred             HHHHHHHHHCCEEEECC-------CCE-ECCCHHHHHHHHHHHHHHHHCCCEECCC
Q ss_conf             99999999706077636-------981-1577679899999999999879611034
Q gi|254780445|r  143 KIQSKEFQRLGIVGDFE-------NPY-TTMTRESEAQIASELLKIAESDQIYRGI  190 (963)
Q Consensus       143 ~~~~~~~~rlG~~~Dw~-------~~y-~T~dp~y~~~~~~~F~~l~~kGliyr~~  190 (963)
T Consensus        54 ~~i~e~LkWlGi~wDEs~~~gG~Y~Py~QS~R~~~Y~~---~~~~Ll~~g~AYrCY  106 (513)
T TIGR00464        54 ESILEGLKWLGISWDESVYVGGNYGPYYQSQRLDIYKK---YIKELLEEGLAYRCY  106 (513)
T ss_pred             HHHHHHHHHCCCCCCCCCCCCCCCEEEHHHHHHHHHHH---HHHHHHHCCCCEEEE
T ss_conf             99998887458674667568986301110136789999---999997459934422