TY - RPRT TI - Converting blood coagulation factor IXa into factor Xa: dramatic increase in amidolytic activity identifies important active site determinants. AU - K P Hopfner AU - H Brandstetter AU - A Karcher AU - E Kopetzki AU - R Huber AU - R A Engh AU - W Bode PY - 1997 DO - 10.1093/emboj/16.22.6626 UR - https://pubmed.ncbi.nlm.nih.gov/9362477/ ID - 9362477 ER -