HHsearch alignment for GI: 254780794 and conserved domain: cd00668

>cd00668 Ile_Leu_Val_MetRS_core This is the catalytic core domain of isoleucyl, leucyl, valyl and methioninyl tRNA synthetases. These class I enzymes are all monomers. However, in some species, MetRS functions as a homodimer, as a result of an additional C-terminal domain. These enzymes aminoacylate the 2'-OH of the nucleotide at the 3' of the appropriate tRNA. The core domain is based on the Rossman fold and is responsible for the ATP-dependent formation of the enzyme bound aminoacyl-adenylate. It contains the characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. Enzymes in this subfamily share an insertion in the core domain, which is subject to both deletions and rearrangements. This editing region hydrolyzes mischarged cognate tRNAs and thus prevents the incorporation of chemically similar amino acids. MetRS has a significantly shorter insertion, which lacks the editing function.
Probab=98.17  E-value=1.9e-05  Score=56.76  Aligned_cols=89  Identities=15%  Similarity=0.136  Sum_probs=48.0

Q ss_pred             EEEEEE-CCCCCCCHHHHHHHHHH--HHHHHHHCCCCEEEEEE-EHHHHC-------CC----------CCHHHHH-HHH
Q ss_conf             789601-58967810557988999--99998505995899973-115730-------78----------9858999-999
Q gi|254780794|r    7 LFVSGV-QPTGVLHLGNYLGMIRN--VIRRQETCNHLGMYFIA-DLHAIT-------NN----------IVQENLR-YQS   64 (355)
Q Consensus         7 ~vltG~-~PtG~~HLG~y~g~i~~--~i~lq~~~~~~~~~~IA-D~halt-------~~----------~~~~~~~-~~~   64 (355)
T Consensus         3 ~i~~~~P~~nG~LHiGHar~~~~~Dv~~R~~r~~G~~V~~v~g~D~~G~~i~~~a~~~~~~~~~~~~~~~~~~~~~~~~~   82 (334)
T cd00668           3 YITTPPPYVNGVLHLGHALTYTLKDIIARYKRMRGYNVLFPPGWDEHGLPIENKAEKEGGIEGKKEEFLEDPKEWVDKYI   82 (334)
T ss_pred             EEECCCCCCCCCHHHHHHHHHHHHHHHHHHHHHCCCCEEECCCCCCCCHHHHHHHHHHCCCCCCHHHHHHHHHHHHHHHH
T ss_conf             99559988888614667598999999999998169953606866865689999999968712105777753999999999


Q ss_pred             HHHHHHHHHCCCCCCCCEEEECCCHHHHHHHH
Q ss_conf             99999999628681112365247407889999
Q gi|254780794|r   65 RLFVASFLAAGVDPSRNIIFKQSDVGYHADLS   96 (355)
Q Consensus        65 ~~~~~~~lA~Gldp~k~~if~QS~v~e~~eL~   96 (355)
T Consensus        83 ~~~~~~~~~lgi~~D~~~~~~-T~~~~~~~~v  113 (334)
T cd00668          83 EEFKEQFKRLGISFDWDRFYR-TTDPEYYEAV  113 (334)
T ss_pred             HHHHHHHHHHCCCCCCCCCEE-CCCHHHHHHH
T ss_conf             999999999689768787611-5999999999