>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=99.02 E-value=6.9e-10 Score=90.21 Aligned_cols=116 Identities=26% Similarity=0.253 Sum_probs=73.6 Q ss_pred HHHHHHHHHHHHHHCCCEEEEECCCCCCCCC-CCCCC---CCCCCCCCHHHHHHCCCCHHHHHHHHHCCC----HHHHEE Q ss_conf 5899999998752036514620332112464-56645---432222210344311238545644331057----023311 Q gi|254780419|r 144 KRTRIINSMRCRMIAENFIECSTPILTASSP-EGARD---FLVPSRVNQGSFYALPQAPQQYKQLLMASG----FDRYFQ 215 (622) Q Consensus 144 ~Rs~i~~~~R~~l~~~gF~EveTP~L~ksTp-eGArd---FlVPsR~~~g~fYALpQSPQlyKQlLmv~G----~dryfq 215 (622) 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 EHHHHCCCCCCC--CCCCCCEEEEEEEECCCCHHHHHHHHHHHHHHHH Q ss_conf 001103777665--5380000356541026899999999999999999 Q gi|254780419|r 216 IAPCFRDEDPRS--DRLPGEFYQLDMEMSFVEQDDILNTMENVLRGVF 261 (622) Q Consensus 216 iarcFRdEd~R~--dRqp~EFTqlD~EmsF~~~edvm~l~E~li~~i~ 261 (622) T Consensus 81 ~~~~fR~E~~~~Gl~Rvr-eF~~~e~~~f~~-~~~~~~~~~~~~~~~~ 126 (211) T cd00768 81 IGPAFRNEGGRRGLRRVR-EFTQLEGEVFGE-DGEEASEFEELIELTE 126 (211) T ss_pred ECCEECCCCCCCCCCCCC-CEEEEEEEEEEC-CHHHHHHHHHHHHHHH T ss_conf 200560578888844604-688984799988-4888999999999999

HHsearch alignment for GI: 254780419 and conserved domain: cd00768