>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=99.46 E-value=1.8e-13 Score=99.24 Aligned_cols=116 Identities=22% Similarity=0.223 Sum_probs=81.9 Q ss_pred HHHHHHHHHHHHHHHCCCEEEECCCEECCC--CCCCCCCCEEEECCCCCCCCCCCCCCCCHHHHHHHHHHHHH----HHH Q ss_conf 999999999999998798898478210568--98544541241024788678320000285899998987446----889 Q gi|254781066|r 24 KRNMIQSSLREYFVENQFIEIDSMSLQYSP--GNETHIRAFSTELIIQDHIRKPLYLQTSPEFSCKKLLAAGE----EKI 97 (355) Q Consensus 24 ~Rs~i~~~iR~ff~~~gF~EV~TPiL~~~~--~g~~~~~~f~t~~~~~~~~~~~~yL~~SPql~lK~ll~~G~----~rv 97 (355) T Consensus 1 ~r~~ie~~~r~~~~~~G~~ev~~P~l~~~~~~~~sg~~~~~~--~~~~~~~~~~~~L~pt~e~~~~~~~~~~~~dLP~r~ 78 (211) T cd00768 1 IRSKIEQKLRRFMAELGFQEVETPIVEREPLLEKAGHEPKDL--LPVGAENEEDLYLRPTLEPGLVRLFVSHIRKLPLRL 78 (211) T ss_pred CHHHHHHHHHHHHHHCCCEEEECCEECCHHHHHHCCCCHHHH--HHHCCCCCCEEEEECCCCHHHHHHHHHHHHHCCHHH T ss_conf 978999999999998699899998342799997506762223--011046797699951684999999752476577786 Q ss_pred HHHHHHHCCCCCCC--CCCCCEEEECEEECCCCHHHHHHHHHHHHHH Q ss_conf 99886424567775--4484300200011577657877755788877 Q gi|254781066|r 98 FCFAHAWRNGEQGC--LHQPEFTMLEWYRAHESYEQLMKDCMNIIRC 142 (355) Q Consensus 98 yqig~~FRaE~~~~--rHlpEFtmLE~e~af~d~~dlm~~~E~li~~ 142 (355) T Consensus 79 ~~~~~~fR~E~~~~Gl~RvreF~~~e~~~f~~~~~-~~~~~~~~~~~ 124 (211) T cd00768 79 AEIGPAFRNEGGRRGLRRVREFTQLEGEVFGEDGE-EASEFEELIEL 124 (211) T ss_pred HEECCEECCCCCCCCCCCCCCEEEEEEEEEECCHH-HHHHHHHHHHH T ss_conf 43200560578888844604688984799988488-89999999999

HHsearch alignment for GI: 254781066 and conserved domain: cd00768