Aprotinin inhibits urokinase but not tissue-type plasminogen activator.

Abstract:

:The protease inhibitor, aprotinin, has been examined for its ability to inhibit urokinase and tissue-type plasminogen activators at pH 7.4 in assays utilizing pyroGlu-Gly-Arg-p-nitroanilide and H-D-Ile-Pro-Arg-p-nitroanilide as substrates, respectively. Aprotinin inhibited both two-chain low molecular weight urokinase and the high molecular weight form of the enzyme in a competitive manner with a similar Ki (27 microM). There was no observable inhibition of tissue-type plasminogen activators at aprotinin concentrations up to 500 microM. These findings suggest that sensitivity to inhibition by aprotinin could be used to distinguish tissue-type and urokinase-type plasminogen activators.

journal_name

Thromb Res

journal_title

Thrombosis research

authors

Lottenberg R,Sjak-Shie N,Fazleabas AT,Roberts RM

doi

10.1016/0049-3848(88)90252-6

subject

Has Abstract

pub_date

1988-03-15 00:00:00

pages

549-56

issue

6

eissn

0049-3848

issn

1879-2472

journal_volume

49

pub_type

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