Production and purification of TAL6003: a novel version of the protease plasmin

Fibrinolytic Activity of Two Polypeptide Chains from Human Plasminogen#

Background:

Plasminogen is a blood plasma glycoprotein of molecular weight about 92,000 Daltons. Physiologically, it incorporates into blood clots and after its activation by plasminogen activators to plasmin can perform a fibrinolytic function. Microplasmin is truncate polypeptide chain derivate of plasmin may be increase the fibrinolytic activity.

Objective:

To study the amino acid sequence of two polypeptides chains derivate to the plasminogen with fibrinolytic activity.

Methods:

he two polypeptides chains were prepared by isoelectric precipitation of human plasma in sodium borate buffer. The sample in a second step was subjected to affinity and ionic interchange chromatography and denaturalized electrophoresis was carried out on the sample previous heat 70ºC.

Results:

Two polypeptide chains of 29.000 and 35.000 Daltons by autolysis controlled were obtained with 25 UI of fibrinolytic activity in fibrin plate.

Conclusion:

Microplasmin was obtained with cleavage in different amino acid bounds and rearrangement of amino acids by autolysis with controlled alkaline precipitation.