A Basis of the Stomatocytoses of Erythrocytes by 1-Chloro-2, 4-Dinitrobenzene and Other Electrophilic Reagents
Identifiers and Pagination:Year: 2015
First Page: 16
Last Page: 19
Publisher Id: BIOLSCI-1-16
Article History:Received Date: 29/1/2015
Revision Received Date: 15/3/2015
Acceptance Date: 5/5/2015
Electronic publication date: 26/6/2015
Collection year: 2015
open-access license: This is an open access article licensed under the terms of the Creative Commons Attribution Non-Commercial License (http://creativecommons.org/licenses/by-nc/3.0/) which permits unrestricted, non-commercial use, distribution and reproduction in any medium, provided the work is properly cited.
On bases of previous observations on the band 3 anion exchange inhibition by the electrophilic reagent 1-fluoro-2,4-dinitrobenzene in resealed ghosts and a previously proposed band 3-based mechanism of control of the erythrocyte shape, it is suggested that stomatocytoses by 1-chloro-2,4-dinitrobenzene and other electrophilic reagents are due to an inhibition of the band 3 anion exchange by a covalent modification of Lys 539, one of the two lysine intramolecularly cross-linked by impermeant 4,4’-diisothiocyanodihydrostilbene-2,2’- disulfonic acid, a band 3 anion exchange potent inhibitor. Attempts to explain these stomatocytoses led to explain the echinocytosis and competitive inhibition of band 3 anion exchange by stilbenedisulfonic acid derivatives and the reversal of the echinocytosis by 2,4-dinitrophenol by one stomatocytogenic of the electrophilic reagents. The inference on stomatocytoses by electrophilic reagents is of interest since stomatocytogenic and echinocytogenic by amphiphiles are perceived to interact non-covalently with the membrane and that they can be clinically relevant.