Trypsin and chymotryosin inhinitor of Vigna unguiculata seeds - involvement of tyrosyls in its interaction with proteases
An. acad. bras. ciênc
;
58(2): 297-302, 1986. tab
Article
in English
| LILACS
| ID: lil-94850
ABSTRACT
When trypsin and chymotrypsin inhibitor of Vigna unguiculata seeds (black-eyed pea trypsin and chymotrypsin inhibitor, BTCI) combines with ß-trysin, 4.0, 1.5, 5.0, 5.8, and 6.6 tyrosyl residues are shield from reaction with N-acetylimidazole, at reagent/protein molar ratios of 60, 120, 200, 350 and 500, respectively. This may result from the presence of tyrosyl residues in the zone of contact between enzyme and inhibitor. In the interaction of BTCI and alpha-chymotrypsin, only 0.6 tyrosyl residues are shielded from the reaction with N-acetylimidazole, at a 500-fold reagent molar excess
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Index:
LILACS (Americas)
Main subject:
Seeds
/
Tyrosine
/
Trypsin
/
Alpha 1-Antichymotrypsin
/
Imidazoles
Language:
English
Journal:
An. acad. bras. ciênc
Journal subject:
Science
Year:
1986
Type:
Article
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