Abstract: Low molecular weight chymotrypsin analogs exhibiting the binding and catalytic groups of the real enzyme of the formula ##STR1## where D equals .alpha.-, .beta.- or .gamma.-cyclodextrin; P is X or (CH.sub.2).sub.n X, wherein n equals 0 to 2 and X equals S, NH, or 0; Q equals substituted phenyl with the carboxylate ion attached to the ortho position or equals (CH.sub.2).sub.n, wherein n equals 0 to 3; and R equals hydrogen --CH.sub.3 or --C.sub.2 H.sub.5.The enzyme models are useful as an analytical model mimicking the real enzyme, a stain remover, a laundry detergent additive, a food additive, and as a therapeutic agent for treating enzyme deficiencies.

Abstract: Microplasmin and microplasminogen are plasmin and plasminogen derivatives produced by the action of plasmin non plasmin/plasminogen at high pH. The action of plasmin at this pH cleaves the heavy (A) chain of plasmin at the Arg.sub.529 - Lys.sub.503 or Lys.sub.530 -Leu.sub.531 bond and promotes disulfide bond rearrangement, producing microplasmin or microplasminogen consisting of a 30 or 31 residue C-terminal peptide derived from the A chain bound through new disulfide bonds to the intact B-chain of plasmin or plasminogen. The resulting products are significantly reduced in size and retain native activity.