>gnl|CDD|29813 cd00768, class_II_aaRS-like_core, Class II tRNA amino-acyl synthetase-like catalytic core domain. Class II amino acyl-tRNA synthetases (aaRS) share a common fold and generally attach an amino acid to the 3' OH of ribose of the appropriate tRNA. PheRS is an exception in that it attaches the amino acid at the 2'-OH group, like class I aaRSs. These enzymes are usually homodimers. This domain is primarily responsible for ATP-dependent formation of the enzyme bound aminoacyl-adenylate. The substrate specificity of this reaction is further determined by additional domains. Intererestingly, this domain is also found is asparagine synthase A (AsnA), in the accessory subunit of mitochondrial polymerase gamma and in the bacterial ATP phosphoribosyltransferase regulatory subunit HisZ.. Length = 211

Score = 77.0 bits (189), Expect = 1e-14 Identities = 58/267 (21%), Positives = 94/267 (35%), Gaps = 63/267 (23%) Query: 275 IFQTLISYMRRKIKD-DYEEINTPQVLDQHLWQQSGHWDSYRANMFAVKCADDTIKDLRT 333 I + +RR + + ++E+ TP V + L +++GH + A D Sbjct: 1 IRSKIEQKLRRFMAELGFQEVETPIVEREPLLEKAGHEPKDLLPVGAENEED-------- 52 Query: 334 FALKPMNCPGHVAVFNHGLKSYRELPVRLAEFGSVYRNEPSGSLHGLMRVRGFTQDDAHV 393 L+P PG V +F + R+LP+RLAE G +RNE GL RVR FTQ + V Sbjct: 53 LYLRPTLEPGLVRLFVSHI---RKLPLRLAEIGPAFRNEGGRR--GLRRVREFTQLEGEV 107 Query: 394 FCTKEQMFNECLKIHNLIISIYKD-----FGFEKIMVKLSTRPEKRVGSDALWDDAENIM 448 F E +I + ++ I+ T E G Sbjct: 108 FGEDG----EEASEFEELIELTEELLRALGIKLDIVFVEKTPGEFSPG------------ 151 Query: 449 KGVLDTIKNSSQDRINTGVLLGEGAFYGPKFEYILKDAIGRDWQCGTIQVDFNLPSR-FN 507 GP FE + GR + G+ + +R + Sbjct: 152 -------------------------GAGPGFEIEVDHPEGRGLEIGSGGYRQDEQARAAD 186 Query: 508 AFYVNSHSEKCHPVMIHRAVFGSIERF 534 ++++ E +P I +ER Sbjct: 187 LYFLDEALEYRYPPTIGFG--LGLERL 211

RPSBLAST alignment for GI: 254781004 and conserved domain: cd00768