Fig. 4.
Superposition of the Cα chain of bovine mt SerRS (red) onto the known structure of T. thermophilus SerRS (blue). The N-terminal helical region (Distal helix), the top region of the two long α helical arms (Tip loop) and the C-terminal region (C-tail) are additional regions in bovine mitochondria (circled) not present in T. thermophilus SerRS.