- Refined 2 A X-ray crystal structure of porcine pancreatic kallikrein A, a specific trypsin-like serine proteinase. Crystallization, structure determination, crystallographic refinement, structure and its comparison with bovine trypsin. Bode, W., Chen, Z., Bartels, K., Kutzbach, C., Schmidt-Kastner, G., Bartunik, H. J. Mol. Biol. (1983)









