Gomis-Ruth, F.X.; St๖cker, W.; Huber, R.; Zwilling, R.; Bode, W.
Refined 1.8 A X-ray crystal structure of astacin, a zinc-endopeptidase from the crayfish Astacus astacus L. Structure determination, refinement, molecular structure and comparison with thermolysin (1993), J. Mol. Biol., 229, 945-968.