>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=97.15 E-value=0.0024 Score=45.43 Aligned_cols=136 Identities=26% Similarity=0.316 Sum_probs=94.5 Q ss_pred HHHHHHHHHHHHHCCCEEEECCCCC-------------------------CC-CCCCCHH---HHHHHCCCCCCEEEEEC Q ss_conf 9999999999986695896116754-------------------------33-3224857---89874483440167641 Q gi|254780757|r 14 QNIILTLTQYWAQQGCTILQPYDME-------------------------VG-AGTFHPS---TTLRALGPLSWKAAYVQ 64 (307) Q Consensus 14 q~ii~~L~~fW~~~GC~i~qpyd~e-------------------------~G-AgT~hp~---T~lr~lg~~pw~~aYvq 64 (307) T Consensus 3 ~~ie~~~r~~~~~~G~~ev~~P~l~~~~~~~~sg~~~~~~~~~~~~~~~~~~L~pt~e~~~~~~~~~~~~dLP~r~~~~~ 82 (211) T cd00768 3 SKIEQKLRRFMAELGFQEVETPIVEREPLLEKAGHEPKDLLPVGAENEEDLYLRPTLEPGLVRLFVSHIRKLPLRLAEIG 82 (211) T ss_pred HHHHHHHHHHHHHCCCEEEECCEECCHHHHHHCCCCHHHHHHHCCCCCCEEEEECCCCHHHHHHHHHHHHHCCHHHHEEC T ss_conf 89999999999986998999983427999975067622230110467976999516849999997524765777864320 Q ss_pred CCCCCCCCCCCCCCCCCCEEEEEEEEECCCCH-------HHHHHHHHHHHHCCCCCCCCCEEEEECCCCCCHHHHCCCCE Q ss_conf 55788765546677500114444557579833-------58999999999819996217179883288870011012321 Q gi|254780757|r 65 PSRRPLDGRYAENPNRLQHYYQFQVIIKPNPL-------NLQNLYIESLKAVGIDPLIHDVRFVEDNWESPTLGAWGLGW 137 (307) Q Consensus 65 PsrRP~DgRYGeNPNRlq~y~QfQVilKPsp~-------niq~lYl~SL~~iGid~~~hDIrFveDnWEsPtLGAwGlGW 137 (307) T Consensus 83 ~~fR~E~~~~G--l~RvreF~~~e~~~f~~~~~~~~~~~~~~~~~~~i~~~lgl~---~~~~~~~~~~~~~~~~~a~~~~ 157 (211) T cd00768 83 PAFRNEGGRRG--LRRVREFTQLEGEVFGEDGEEASEFEELIELTEELLRALGIK---LDIVFVEKTPGEFSPGGAGPGF 157 (211) T ss_pred CEECCCCCCCC--CCCCCCEEEEEEEEEECCHHHHHHHHHHHHHHHHHHHHCCCC---CCEEEEEECCCCCCCCCCEEEE T ss_conf 05605788888--446046889847999884888999999999999999974998---8869999778676664523545 Q ss_pred EEEEC-----CEEEHHHHHHHH Q ss_conf 76887-----874147778998 Q gi|254780757|r 138 ECWCD-----GMEISQFTYFQQ 154 (307) Q Consensus 138 Evwld-----GMEItQFTYFQQ 154 (307) T Consensus 158 Die~~~p~~~~~Ev~s~~~~~d 179 (211) T cd00768 158 EIEVDHPEGRGLEIGSGGYRQD 179 (211) T ss_pred EEEEECCCCCEEEEECEECCCC T ss_conf 5789837897999935461677

HHsearch alignment for GI: 254780757 and conserved domain: cd00768