that oxidoreductasemediated modulations of the cell surface thiol status affect the enzymatic activity of APN .
The data are the first
We show here that oxidoreductasemediated modulations of the cell surface thiol status affect the enzymatic activity of APN .
The data are the first to show thiol - dependent modulation of the activity of a typical surfacebound peptidase at the cell surface , probably reflecting a general regulating mechanism .