>gnl|CDD|29810 cd00670, Gly_His_Pro_Ser_Thr_tRS_core, Gly_His_Pro_Ser_Thr_tRNA synthetase class II core domain. This domain is the core catalytic domain of tRNA synthetases of the subgroup containing glycyl, histidyl, prolyl, seryl and threonyl tRNA synthetases. It is primarily responsible for ATP-dependent formation of the enzyme bound aminoacyl-adenylate. These enzymes belong to class II aminoacyl-tRNA synthetases (aaRS) based upon their structure and the presence of three characteristic sequence motifs in the core domain. This domain is also found at the C-terminus of eukaryotic GCN2 protein kinase and at the N-terminus of the ATP phosphoribosyltransferase accessory subunit, HisZ and the accessory subunit of mitochondrial polymerase gamma (Pol gamma b) . Most class II tRNA synthetases are dimers, with this subgroup consisting of mostly homodimers. These enzymes attach a specific amino acid to the 3' OH group of ribose of the appropriate tRNA.. Length = 235

Score = 136 bits (344), Expect = 2e-32 Identities = 56/273 (20%), Positives = 101/273 (36%), Gaps = 43/273 (15%) Query: 272 GWKIFQTLISYMRRKIKDD-YEEINTPQVLDQHLWQQSGHWDSYRANMFAVKCADDTIKD 330 G +++ L ++ ++ + Y+EI P + L+ + GH D YR M+ + ++D Sbjct: 1 GTALWRALERFLDDRMAEYGYQEILFPFLAPTVLFFKGGHLDGYRKEMYTFEDKGRELRD 60 Query: 331 LRTFALKPMNCPGHVAVFNHGLKSYRELPVRLAEFGSVYRNEPSGSLHGLMRVRGFTQDD 390 L+P C +F+ + SYR LP+RL + G +R+EPSG GLMRVR F Q + Sbjct: 61 -TDLVLRPAACEPIYQIFSGEILSYRALPLRLDQIGPCFRHEPSGR-RGLMRVREFRQVE 118 Query: 391 AHVFCTKEQMFNECLKIHNLIISIYKDFG---FEKIMVKLSTRPEKRVGSDALWDDAENI 447 VF E+ + + + ++ + V ++ P G Sbjct: 119 YVVFGEPEEA----EEERREWLELAEEIARELGLPVRVVVADDPFFGRGGK--------- 165 Query: 448 MKGVLDTIKNSSQDRINTGVLLGEGAFYGPKFEYILKDAI-GRDWQCGTIQVDFNLPSRF 506 G A E+ L + GR + + +L Sbjct: 166 ---------------------RGLDAGRETVVEFELLLPLPGRAKETAVGSANVHLDHFG 204 Query: 507 NAFYVNSHSEKCHPVMIHRAVFGSIERFIGIMI 539 +F ++ G ER + ++ Sbjct: 205 ASFKIDEDGGGRAHTGCGG--AGGEERLVLALL 235

RPSBLAST alignment for GI: 254781004 and conserved domain: cd00670