>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.

Probab=99.54 E-value=3.8e-15 Score=116.77 Aligned_cols=114 Identities=32% Similarity=0.366 Sum_probs=80.4 Q ss_pred HHHHHHHHHHHHHHHHHHHHHCCCCCCCCCC-CCCCC---EEEEECCCCCCCCCCCHHHHHHHHHHHCCC---CCHHHHH Q ss_conf 8999999998738553454311565323566-65542---036412222254321001223444421024---3024543 Q gi|254781118|r 178 QRSLLISQIRHFMEKKGFMEVETPILQPIYG-GATAD---PFKTHHNILKADMYLRIAPELYLKRVLISG---LTDQVFE 250 (502) Q Consensus 178 ~Rs~i~~~iR~~l~~~gF~EveTP~L~~~~~-g~~~~---~F~~~~~~~~~~~yL~qSpql~~k~l~~~G---~~drvfe 250 (502) T Consensus 1 ~r~~ie~~~r~~~~~~G~~ev~~P~l~~~~~~~~sg~~~~~~~~~~~~~~~~~~L~pt~e~~~~~~~~~~~~dLP~r~~~ 80 (211) T cd00768 1 IRSKIEQKLRRFMAELGFQEVETPIVEREPLLEKAGHEPKDLLPVGAENEEDLYLRPTLEPGLVRLFVSHIRKLPLRLAE 80 (211) T ss_pred CHHHHHHHHHHHHHHCCCEEEECCEECCHHHHHHCCCCHHHHHHHCCCCCCEEEEECCCCHHHHHHHHHHHHHCCHHHHE T ss_conf 97899999999999869989999834279999750676222301104679769995168499999975247657778643 Q ss_pred HHHHHCCCCCCC--CCCCCCCCCCCCCCCCCHHHHHHHHHHHHH Q ss_conf 453202542344--324521000100110001112456789999 Q gi|254781118|r 251 LNRNFRNEGVSS--RHNPEFTMIEAYWAYTDYRDMMKLVEDLCH 292 (502) Q Consensus 251 I~~~FR~E~~~~--~H~pEFt~lE~e~a~~d~~dim~l~E~li~ 292 (502) T Consensus 81 ~~~~fR~E~~~~Gl~RvreF~~~e~~~f~~~-~~~~~~~~~~~~ 123 (211) T cd00768 81 IGPAFRNEGGRRGLRRVREFTQLEGEVFGED-GEEASEFEELIE 123 (211) T ss_pred ECCEECCCCCCCCCCCCCCEEEEEEEEEECC-HHHHHHHHHHHH T ss_conf 2005605788888446046889847999884-888999999999

HHsearch alignment for GI: 254781118 and conserved domain: cd00768