RPSBLAST alignment for GI: 254780445 and conserved domain: TIGR00398

>gnl|CDD|161858 TIGR00398, metG, methionyl-tRNA synthetase. The methionyl-tRNA synthetase (metG) is a class I amino acyl-tRNA ligase. This model appears to recognize the methionyl-tRNA synthetase of every species, including eukaryotic cytosolic and mitochondrial forms. The UPGMA difference tree calculated after search and alignment according to this model shows an unusual deep split between two families of MetG. One family contains forms from the Archaea, yeast cytosol, spirochetes, and E. coli, among others. The other family includes forms from yeast mitochondrion, Synechocystis sp., Bacillus subtilis, the Mycoplasmas, Aquifex aeolicus, and Helicobacter pylori. The E. coli enzyme is homodimeric, although monomeric forms can be prepared that are fully active. Activity of this enzyme in bacteria includes aminoacylation of fMet-tRNA with Met; subsequent formylation of the Met to fMet is catalyzed by a separate enzyme. Note that the protein from Aquifex aeolicus is split into an alpha (large) and beta (small) subunit; this model does not include the C-terminal region corresponding to the beta chain. Length = 530
 Score = 70.1 bits (172), Expect = 2e-12
 Identities = 88/357 (24%), Positives = 135/357 (37%), Gaps = 62/357 (17%)

Query: 470 VEKIRFFPSSG------KNRLRSMIENR-PDWLLSRQ-RNWGVPICFFYNEKGEILLDKA 521
            E IR  P SG      KN+ ++ ++    D  ++R    WG+P+    N+   +  D  
Sbjct: 196 EEWIRKNPESGSPASNVKNKAQNWLKGGLKDLAITRDLVYWGIPVPNDPNKVVYVWFDAL 255

Query: 522 INDRIIKTFKDQGSDAWFSEGSRDFFLGDRASEPWIQ--SKDILDVWFDSACTHTILLGK 579
           I   I       G    + +     +  +      I    KDI  V F     HTI    
Sbjct: 256 IG-YISSLGILSGDTEDWKK-----WWNNDEDAELIHFIGKDI--VRF-----HTIY--- 299

Query: 580 DPKLAWPADVYLEGSDQHRGWFQHSLLESCATRGSTPFTSLITHGFSVDENGEKMSKSKG 639
                WPA                 L       G    T + +HG+   E G KMSKS G
Sbjct: 300 -----WPA-------------MLMGL-------GLPLPTQVFSHGYLTVEGG-KMSKSLG 333

Query: 640 NVVFPEEIISESGADVLRYW-AVNSDYHDDQRLGKNIIQ--TNIDTYRKLRNTIRWMLGM 696
           NVV P ++++  GAD+LRY+         D            N D   KL N +   LG 
Sbjct: 334 NVVDPSDLLARFGADILRYYLLKERPLGKDGDFSWEDFVERVNADLANKLGNLLNRTLGF 393

Query: 697 LAHDTGN--EPSLADMPALEQLMLHRLTELDQVVREAYDAFNFKEVVRQLTNFSNAELSS 754
           +                  ++L+   + E  + + EA ++F F++ +R++     A+  +
Sbjct: 394 IKKYFNGVLPSEDITDEEDKKLL-KLINEALEQIDEAIESFEFRKALREI--MKLADRGN 450

Query: 755 FYFDIRKDSLYCDSPSSLKRLSSIAVIRILCRHLIIWIAPILPFTAEEAWLSLNPEA 811
            Y D  K          LK L  +AV  +L R L I + PI+P  +E+    LN E 
Sbjct: 451 KYIDENKPWELFKQSPRLKEL--LAVCSMLIRVLSILLYPIMPKLSEKILKFLNFEL 505