to localize the binding region of porcine tissue-type plasminogen activator ( ec 3.4.21.31 ) ( t-plasminogen activator ) to heparin , functionally active a and b chains ( molecular mass of each 33 kda ) were separated from the two-chain t-plasminogen activator after mild reduction and alkylation .
C0032143
t-plasminogen activator
C0032144
plasminogen activator