AFFINITY TRAP REACTOR AND SINGLE-STEP PROCESS FOR PURIFYING ANGIOSTATIN-LIKE FRAGMENT FROM HUMAN PLASMA USING THE SAME

摘要

It is intended to provide an affinity trap reactor allowing efficient progress of a reaction between an enzyme bonded to a support and a substrate without restriction in use depending on the types of the enzyme and substrate employed. An affinity trap reactor comprising a support having an enzyme and a molecule specifically reacting with the substrate of the enzyme bonded thereto; and a process for obtaining BL-angiostatin in a single step from plasminogen contained in a biological sample which comprises applying the biological sample containing plasminogen to an affinity trap reactor comprising a support having bacillolysin MA and lysine bonded thereto and reacting at 0 to 50 °C in the presence of isopropyl alcohol under calcium ion-free conditions to thereby obtain BL-angiostatin.