RPSBLAST alignment for GI: 255764461 and conserved domain: cd00668

>gnl|CDD|185674 cd00668, Ile_Leu_Val_MetRS_core, catalytic core domain of isoleucyl, leucyl, valyl and methioninyl tRNA synthetases. 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. Length = 312
 Score =  228 bits (583), Expect = 3e-60
 Identities = 112/352 (31%), Positives = 169/352 (48%), Gaps = 62/352 (17%)

Query: 6   KLYISTAIAYPNAQPHIGHAYEMIIADVLARFHRLDGLDVLFTTGTDEHGQKIAKAAQNA 65
           K Y++T   Y N   H+GHA   IIAD +AR+ R+ G +V F  G D HG  I   A+  
Sbjct: 1   KFYVTTPPPYANGSLHLGHALTHIIADFIARYKRMRGYEVPFLPGWDTHGLPIELKAERK 60

Query: 66  GV-------------TTKVFVDQNSRNFRDMADVLDISYD--DFIRTTEKRHHDTCRILW 110
           G                K FV++ S   ++    L ISYD  D   TTE  +     +++
Sbjct: 61  GGRKKKTIWIEEFREDPKEFVEEMSGEHKEDFRRLGISYDWSDEYITTEPEYSKAVELIF 120

Query: 111 KKISDKGDIYKGCYSGWYSLRDEAYYNDDEVYKGADGQYYNAQHNPVQWMEEEGYFFRLS 170
            ++ +KG IY+G +                V                     E +FF + 
Sbjct: 121 SRLYEKGLIYRGTH---------------PVRI------------------TEQWFFDMP 147

Query: 171 AYQDKLLSYYESHPEFILPIERRNEVISFVKSGLKDLSLSRKTFDWGIKIPDDPQYIMYV 230
            +++KLL         I+P   +N + ++++S L D ++SR+ + WG  +P+D   +  V
Sbjct: 148 KFKEKLLKALRRGK--IVPEHVKNRMEAWLES-LLDWAISRQRY-WGTPLPED---VFDV 200

Query: 231 WIDALTNYLTTTGYLDNPDGSKAK--FWPADLHVIGKDILRFHAIYWPAFLLSANLPLP- 287
           W D+    L   G L  P+  +     +PAD H+IGKDILR  A +W   L++    +P 
Sbjct: 201 WFDSGIGPL---GSLGYPEEKEWFKDSYPADWHLIGKDILRGWANFWITMLVALFGEIPP 257

Query: 288 KKVFSHGFIL-HKGEKISKSLGNVIDPIEVIEEVGVDALRYFLVREIACGKD 338
           K +  HGF+L   G+K+SKS GNVIDP +V+E+ G DALRY+L      G D
Sbjct: 258 KNLLVHGFVLDEGGQKMSKSKGNVIDPSDVVEKYGADALRYYLTSLAPYGDD 309