HHsearch alignment for GI: 254780445 and conserved domain: TIGR00456

>TIGR00456 argS arginyl-tRNA synthetase; InterPro: IPR001278 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 . Arginyl-tRNA synthetase (6.1.1.19 from EC) has been crystallized and preliminary X-ray crystallographic analysis of yeast arginyl-tRNA synthetase-yeast tRNAArg complexes is available . ; GO: 0000166 nucleotide binding, 0004814 arginine-tRNA ligase activity, 0005524 ATP binding, 0006412 translation, 0006420 arginyl-tRNA aminoacylation, 0005737 cytoplasm.
Probab=98.76  E-value=3.5e-08  Score=74.73  Aligned_cols=133  Identities=14%  Similarity=0.153  Sum_probs=84.3

Q ss_pred             CCCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCC-------------------CCCCCCC--------CCHHH-H-HHHH
Q ss_conf             2558897621577856687899876708982678-------------------8882444--------20899-9-9999
Q gi|254780445|r   63 PYANGHIHIGHALNKILKDVIVRSFQMRNFNACF-------------------VPGWDCH--------GLPIE-W-KVEN  113 (963)
Q Consensus        63 Py~nG~lH~GH~~n~~~kDi~~Ry~rm~G~~Vl~-------------------~~GwD~h--------GLPiE-~-~vek  113 (963)
T Consensus       127 aNp~gplH~GHlR~aiIGD~L~r~l~~~G~~V~r~yyVND~G~Q~~~l~~~~~~~~~e~~~~~~~~~~~~~~~~y~~~~k  206 (600)
T TIGR00456       127 ANPAGPLHIGHLRNAIIGDSLARILEFLGYDVIREYYVNDWGRQIGLLVLGVEKFGNEKETAVKKPDHGLEGFDYVEINK  206 (600)
T ss_pred             CCCCCCCCHHHHHHHHHHHHHHHHHHHCCCCEEEEEEECCHHHHHHHHHHHHHHHCCHHHCCCCCCCCCHHHHHHHHHHH
T ss_conf             88897611000025777889999998759707985200542899999999999851213202668742012358889887


Q ss_pred             HHHHCCC-----CHH----------HCCH--HHHHHHHHHHHHHHHHHHHHHHHHCCEEEE---CCCCEECCCHHHHHHH
Q ss_conf             8765599-----833----------4899--999999999999999999999997060776---3698115776798999
Q gi|254780445|r  114 EYLAKGK-----KKD----------DIPV--NEFRQACRDSASAWVKIQSKEFQRLGIVGD---FENPYTTMTRESEAQI  173 (963)
Q Consensus       114 ~l~~~~~-----~~~----------~~~~--~~~~~~c~~~a~~~i~~~~~~~~rlG~~~D---w~~~y~T~dp~y~~~~  173 (963)
T Consensus       207 ~~~e~~~~~~~~s~~~~~~~~~~~~e~gdnNe~~~~~w~~~~~~~l~~~k~tl~~lni~~D~~~~E~E~~-----~~~~~  281 (600)
T TIGR00456       207 RLEENEEPINKQSLEEEARELFVKLESGDNNEKTIKLWKRLVEYALEGIKETLKRLNIHFDEFVWEGESV-----KNGKV  281 (600)
T ss_pred             HHHHCCCCCCCCCHHHHHHHHHHHHHCCCCHHHHHHHHHHHHHHHHHHHHHHHHHHCCCEEEEEECCEEE-----ECCCH
T ss_conf             8861777653335457899999974324442899999999999999999999986296500588540457-----74860


Q ss_pred             HHHHHHHH-HCCCEECC-CCEEEECCCCC
Q ss_conf             99999999-87961103-43022057435
Q gi|254780445|r  174 ASELLKIA-ESDQIYRG-IKPIMWSIAEQ  200 (963)
Q Consensus       174 ~~~F~~l~-~kGliyr~-~~pV~w~p~~~  200 (963)
T Consensus       282 ~~v~e~L~k~~gl~~ed~gA~~~~L~~f~  310 (600)
T TIGR00456       282 PKVLEDLKKEKGLVVEDDGALWLDLTEFG  310 (600)
T ss_pred             HHHHHHHHHHCCCEEECCCEEEEECCCCC
T ss_conf             78999863103780674734899757766