TY - RPRT TI - Viral proteases: evolution of diverse structural motifs to optimize function. AU - L M Babé AU - C S Craik PY - 1997 DO - 10.1016/s0092-8674(00)80426-2 UR - https://pubmed.ncbi.nlm.nih.gov/9390549/ ID - 9390549 ER -