>gnl|CDD|173900 cd00674, LysRS_core_class_I, catalytic core domain of class I lysyl tRNA synthetase. Class I lysyl tRNA synthetase (LysRS) catalytic core domain. This class I enzyme is a monomer which aminoacylates 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. The class I LysRS is found only in archaea and some bacteria and has evolved separately from class II LysRS, as the two do not share structural or sequence similarity. Length = 353

 Score = 50.8 bits (122), Expect = 2e-06
 Identities = 21/75 (28%), Positives = 35/75 (46%), Gaps = 2/75 (2%)

Query: 572 GIEPFHIVYMHALVRDKNGQKMSKSKGNVVDPIDVIDQYGADALRFYFSIMAVQGRDINL 631
           G  P  ++Y    +  K G KMS SKGNV+ P D ++    + LR+ ++      + I  
Sbjct: 257 GEPPVPVMY--EFIGLKGGGKMSSSKGNVITPSDWLEVAPPEVLRYLYARRKNPEKHIGF 314

Query: 632 DLERIAGYRNFITKF 646
           DL+ +  Y  +    
Sbjct: 315 DLDILRLYDEYDRLE 329