Product Number: 855-19


Molecular Weight: 504.28
Salt Form: TFA
Purity: >96%
Sequence (3-letter): D-Ile-Pro-Arg-pNA
Sequence (1-letter): iPR-pNA
Storage: -20 °C or below

D-Ile-Pro-Arg-pNA is a chromogenic substrate for tissue plasminogen-activator (tPA), a serine protease found on endothelial cells lining blood vessels. tPA is the major enzyme responsible for clot breakdown by converting plasminogen to plasmin.

Activity is quantified by the release of p-nitroaniline which is measured by absorbance at 405 nm.




Enzyme Substrates

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