Abstract
The interaction between duodenase, which belongs to a group of Janus-faced proteinases, and classical Bowman-Birk (BBI) and Kunitz (STI) type inhibitors from soybean was investigated. Duodenase was shown to interact only with the antichymotrypsin site (Leu-Ser) of BBI, whereas the antitrypsin site (Lys-Ser) of the inhibitor appeared to be vacant and capable of interaction with trypsin. The inhibition constants of duodenase by BBI, the BBI-trypsin complex, and STI were 4,400, and 40 nM, respectively.
Original language | English (US) |
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Pages (from-to) | 1244-1249 |
Number of pages | 6 |
Journal | Biochemistry (Moscow) |
Volume | 64 |
Issue number | 11 |
State | Published - Nov 1999 |
Externally published | Yes |
Keywords
- Bowman-birk inhibitor
- Duodenase
- Inhibition constant
- Kunitz inhibitor
- Specificity
ASJC Scopus subject areas
- Biochemistry