Effect of Surfactants on the polarographic Brdicka activity of cysteine

The catalytic brdička activity of cysteine is greatly modified by a number of electrochemically inactive surfactants. Regardless of their chemical nature and electrical charge, all surfactants which are adsorbed at the electrode surface also at potentials of the brdička catalytic hydrogen wave bring...

Full description

Saved in:
Bibliographic Details
Published in:Bioelectrochemistry and Bioenergetics 1977, Vol.4 (4), p.413-424
Main Authors: Mader, Pavel, Veselá, Vera
Format: Article
Language:English
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:The catalytic brdička activity of cysteine is greatly modified by a number of electrochemically inactive surfactants. Regardless of their chemical nature and electrical charge, all surfactants which are adsorbed at the electrode surface also at potentials of the brdička catalytic hydrogen wave bring about a gradual increase in the height of the brdička currents at low degree of coverage of the electrode surface by the adsorbed surfactant. When the degree of this coverage exceeds a certain value, the stimulating effect gradually diminishes with further increasing surfactant concentration. Finally, when the electrode becomes fully covered, the brdička currents become suppressed compared to their magnitude in the complete absence of the surfactant. The possibility of the self—modifying effect of the proteinic catalysts on their brdička catalytic activity is discussed.
ISSN:0302-4598
DOI:10.1016/0302-4598(77)80042-1