>cd00671 ArgRS_core This is the catalytic core domain of Arginyl tRNA synthetase (ArgRS). 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. There are at least three subgroups of ArgRS. One type contains both characteristic class I HIGH and KMSKS motifs, which are involved in ATP binding. The other subtype lacks the KMSKS motif; however, it has a lysine N-terminal to the HIGH motif, which serves as the functional counterpart to the second lysine of the KMSKS motif. A third group, which is found primarily in archaea and a few bacteria, lacks both the KMSKS motif and the HIGH loop lysine.

Probab=98.57  E-value=4e-07  Score=67.43  Aligned_cols=47  Identities=21%  Similarity=0.340  Sum_probs=40.0

Q ss_pred             CCCCCCCCHHHHHHHHHHHHHHHHHHCCCCCCCCCCCCCCCCCHHHH
Q ss_conf             25588976215778566878998767089826788882444208999
Q gi|254780445|r   63 PYANGHIHIGHALNKILKDVIVRSFQMRNFNACFVPGWDCHGLPIEW  109 (963)
Q Consensus        63 Py~nG~lH~GH~~n~~~kDi~~Ry~rm~G~~Vl~~~GwD~hGLPiE~  109 (963)
T Consensus         9 ~Np~kplHvGHlR~aiiGdslaril~~~G~~V~r~~yvnD~G~Qi~~   55 (267)
T cd00671           9 ANPTGPLHVGHLRNAIIGDSLARILEFAGYDVTREYYINDWGRQIGL   55 (267)
T ss_pred             CCCCCCCCHHHHHHHHHHHHHHHHHHHCCCEEEEEEECCCCCHHHHH
T ss_conf             99999850310363899999999999879958898850786099999