>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.

Probab=100.00 E-value=0 Score=506.43 Aligned_cols=219 Identities=26% Similarity=0.366 Sum_probs=208.6 Q ss_pred HHHHHHHHHHHHHHHHHHHCCCCEEHHHHHCCHHHHHHHHHCHHHHHHHHHHH--------HCCEECCCCCCHHHHHHHH Q ss_conf 88999999999998622320320212356202788986551422476776431--------0002313454114544534 Q gi|254780680|r 171 LAHLERALGQFMIDLHTSEHGYTEVSAPLLVRDEAMYGTGQIPKFADDMFCTT--------DGRWLIPTSEVSLTNLYSH 242 (430) Q Consensus 171 ~A~Le~ALi~y~ld~~~~~~Gy~~v~~P~lv~~~~~~gtG~lp~f~~~~y~~~--------d~l~Li~TaEvpL~~~~~~ 242 (430) T Consensus 1 Ga~L~~aL~~~~~~~~-~~~G~~~v~~P~l~~~~~~~~sg~~~~f~~~~y~v~~~~~~~~~~~~~L~PTsE~~~~~~~~~ 79 (235) T cd00670 1 GTALWRALERFLDDRM-AEYGYQEILFPFLAPTVLFFKGGHLDGYRKEMYTFEDKGRELRDTDLVLRPAACEPIYQIFSG 79 (235) T ss_pred CHHHHHHHHHHHHHHH-HHCCCEEEECCCCCCHHHHHHCCCCCCCCCCEEEEECCCCCCCCCCEEEEECCCHHHHHHHHC T ss_conf 9889999999999999-986998998985578999922386754520528982377666787389930786999999948 Q ss_pred HCCCHHHHCCEEEEEECCCCCCCCCCCCCCCCEEEEEEEEEEEEEECCCCCCHHHHHHHHHHHHHHHHHHHCCHHHHCCC Q ss_conf 20595550420885322107884335543432122221020021212786501457898999999999984106753037 Q gi|254780680|r 243 EIIESKSLPLRFTTLAPSFRSEAGSAGRDTRGMLRQHQFWKCELVSITREEDSFTEHERMLSCAEEILKRLDLHYRVVSL 322 (430) Q Consensus 243 ~~l~~~~LPik~~~~s~cfR~EaGs~GkdtrGl~RvHQF~KVE~~~~~~pe~S~~~~e~~~~~~~~i~~~L~lpyRvv~~ 322 (430) T Consensus 80 ~i~s~~dLPlr~~~~s~~fR~E~~~----~~Gl~Rv~eF~k~E~~~~~~~e~~~~~~~~~~~~~~~i~~~L~l~y~v~~~ 155 (235) T cd00670 80 EILSYRALPLRLDQIGPCFRHEPSG----RRGLMRVREFRQVEYVVFGEPEEAEEERREWLELAEEIARELGLPVRVVVA 155 (235) T ss_pred CCCCHHHCCEEEEEECCEECCCCCC----CCCCEEEEEEEEEEEEEEECHHHHHHHHHHHHHHHHHHHHHCCCCEEEEEC T ss_conf 3287687995454456533367899----999836789998507999688999999999999999999986997799975 Q ss_pred CCHHCCCHHH--------EEEEEEEECCCCCCEEEEEEECCCCCHHHHHCCCEEECCCCCCCCEEEEECCCHHHHHHHHH Q ss_conf 8011784434--------02410110100483323753102100764532684733899841010420043228999999 Q gi|254780680|r 323 CTGDLGFSAC--------KTYDLEVWLAGQNLYREISSCSTCGNFQSRRMNSRYRDPNSKSLKFTHTLNGSGVAVGRCLI 394 (430) Q Consensus 323 ~sgdlg~~a~--------~~~DiE~w~P~~~~y~Ev~S~Snc~D~QsrRl~iry~~~~~~~~~~~htlNgt~~A~~R~l~ 394 (430) T Consensus 156 ~~~d~g~~~~~~~~~~a~~~~d~E~~~p~~~~~~e~~s~S~~~~~q~r~~~~~~~~~~~---~~~ht~~~s~~a~~R~l~ 232 (235) T cd00670 156 DDPFFGRGGKRGLDAGRETVVEFELLLPLPGRAKETAVGSANVHLDHFGASFKIDEDGG---GRAHTGCGGAGGEERLVL 232 (235) T ss_pred CCCCCCCCCCCCCCCCCCCCEEEEEEECCCCCEEEEEEEEECCCHHHCCCCCEEECCCC---CEEEEECCCCCHHHHHHH T ss_conf 86133766410002565556469999778994678999302578444302530146999---689997263288999999 Q ss_pred HHH Q ss_conf 998 Q gi|254780680|r 395 AIL 397 (430) Q Consensus 395 ail 397 (430) T Consensus 233 All 235 (235) T cd00670 233 ALL 235 (235) T ss_pred HHC T ss_conf 869

HHsearch alignment for GI: 254780680 and conserved domain: cd00670