%0 Journal Article %T A Despecialization Step Underlying Evolution of a Family of Serine Proteases %A Wouters, Merridee A %A Liu, Ke %A Riek, Peter %A Husain, Ahsan %A , %J Molecular Cell %@ 1097-2765 %D 2003-08-01 %I Elsevier BV %~ DeepDyve