>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=97.49 E-value=0.00071 Score=46.71 Aligned_cols=178 Identities=13% Similarity=0.110 Sum_probs=105.3 Q ss_pred HHHHHHHHHHHHHHHHHHCCCCCCCCHHHHHHHHHHHHHCCCCCCCCCCCCCCCCHHHCHHHHHHHHHCCCCCCHHHHHH Q ss_conf 95467898878778774023210048257655200000000246776432101512211067764321015861134543 Q gi|254780316|r 492 QSRTRYVKRVLASRAMMEVVNWSFISKEQSVLFGGGQRELEILNPISADMSNMRTSLLPGLLKATGRNVDRAIADFAIFE 571 (805) Q Consensus 492 ~~~~~~ir~~L~~~Gf~Ev~tysl~s~~~~~~~~~~~~~i~l~NPlS~e~s~lR~SLlp~LL~~~~~N~~r~~~~i~lFE 571 (805) T Consensus 3 ~~ie~~~r~~~~~~G~~ev~~P~l~~~~~~~~sg~~~~~~~~~~~~~~~~~~L~pt~e~~~~~~~~~~~-~dL-P~r~~~ 80 (211) T cd00768 3 SKIEQKLRRFMAELGFQEVETPIVEREPLLEKAGHEPKDLLPVGAENEEDLYLRPTLEPGLVRLFVSHI-RKL-PLRLAE 80 (211) T ss_pred HHHHHHHHHHHHHCCCEEEECCEECCHHHHHHCCCCHHHHHHHCCCCCCEEEEECCCCHHHHHHHHHHH-HHC-CHHHHE T ss_conf 899999999999869989999834279999750676222301104679769995168499999975247-657-778643 Q ss_pred HCCCCCCCCCCCCCEEHHHHCCCCCCCCCCCCCCCCCCCCCCCCCCHHHHHHHHHHHHHHCCCCCC-EEEECCCCCC--C Q ss_conf 024444777544310002210354310124620234544333314688875311111110145333-0330588656--7 Q gi|254780316|r 572 VSHVYENDTPEGQKYMAAGIRKGSSGIEGSGRLWSDKSEERCRFVDLFDAKADALSVIEPFVSLDS-LRFESGAPSW--Y 648 (805) Q Consensus 572 iG~Vf~~~~~~~~~~~~~~~~~~~~~~~~~g~~~~~~~~~~~~~~df~dlKg~v~~ll~~l~~~~~-~~~~~~~~~~--~ 648 (805) T Consensus 81 ~~~~fR~E~~~------~Gl~RvreF~~~e~~~f~~~---~~~~~~~~~~~~~~~~i~~~lgl~~~~~~~~~~~~~~~~~ 151 (211) T cd00768 81 IGPAFRNEGGR------RGLRRVREFTQLEGEVFGED---GEEASEFEELIELTEELLRALGIKLDIVFVEKTPGEFSPG 151 (211) T ss_pred ECCEECCCCCC------CCCCCCCCEEEEEEEEEECC---HHHHHHHHHHHHHHHHHHHHCCCCCCEEEEEECCCCCCCC T ss_conf 20056057888------88446046889847999884---8889999999999999999749988869999778676664 Q ss_pred CCCCEEEEEEC-----CEEEEEEEEEECHHHHHHCCCC Q ss_conf 89816999987-----9299999854778999966879 Q gi|254780316|r 649 HPGRSGIIKTS-----AEIVLGYFGEFHPNILDFFGLS 681 (805) Q Consensus 649 hPgrsa~I~~~-----gk~iiG~iG~ihP~i~~~~~i~ 681 (805) T Consensus 152 ~a~~~~Die~~~p~~~~~E-v~s~~~~~d~qsr~~~i~ 188 (211) T cd00768 152 GAGPGFEIEVDHPEGRGLE-IGSGGYRQDEQARAADLY 188 (211) T ss_pred CCEEEEEEEEECCCCCEEE-EECEECCCCHHHHHCCCE T ss_conf 5235455789837897999-935461677878846989

HHsearch alignment for GI: 254780316 and conserved domain: cd00768