Purificação e caracterização cinética da calicreína tecidual do rato (rk1) com os inibidores da tripsina:: benzamidina, 4-aminobenzamidina e 4-nitrobenzamidina, e estudo comparativo com dados da literatira para a inibição da tripsina

AUTOR(ES)
DATA DE PUBLICAÇÃO

2005

RESUMO

The present study is to purify and determine the kinetic characteristics of the tissue calicreína mouse (rK1) to further develop selective enzyme inhibitors for human calicreínas. The principle is summed up and characterized the compound 4-nitrobenzamidina. Next, purified to rK1 by steps: DEAE-Sepharose (ion-exchange chromatography) and aprotinin-Sepharose (affinity chromatography). The molecular weight and purity of rK1 were determined by chromatography on a column of Superose 12 HR FPLC equipment. Studies of kinetics of tissue calicreína mouse rK1 with the substrate Bz- Arg-Nan in the absence and presence of benzamidina, 4- aminobenzamidina and 4-nitrobenzamidina indicated that BzA is a competitive inhibitor while ABzA and NBzA inhibitors appear to be mixed-type

ASSUNTO(S)

bioquímica teses. farmácia teses. inibidores enzimáticos teses.

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