>gnl|CDD|129096 smart00863, tRNA_SAD, Threonyl and Alanyl tRNA synthetase second additional domain. The catalytically active form of threonyl/alanyl tRNA synthetase is a dimer. Within the tRNA synthetase class II dimer, the bound tRNA interacts with both monomers making specific interactions with the catalytic domain, the C-terminal domain, and this SAD domain (the second additional domain). The second additional domain is comprised of a pair of perpendicularly orientated antiparallel beta sheets, of four and three strands, respectively, that surround a central alpha helix that forms the core of the domain. Length = 44

 Score = 60.5 bits (148), Expect = 2e-09
 Identities = 23/49 (46%), Positives = 28/49 (57%), Gaps = 5/49 (10%)

Query: 676 VRVVSVEYEDGGVHSSALCGGTHVSSTGEIMLLYIVSESSIRAGIRRIE 724
           VRVVS+     G     LCGGTHV +TGEI    I+S S    G++RI 
Sbjct: 1   VRVVSI-----GDFDVELCGGTHVPNTGEIGAFKILSVSGAYWGLQRIY 44