Inverse effects of dansylation of red blood cell membrane on band 3 protein-mediated transport of sulphate and chloride

AUTOR(ES)

Lepke, Sigrid

RESUMO

1. Dansylation of the red cell membrane produces inverse effects on SO42- and Cl- equilibrium exchange. The former is enhanced by several orders of magnitude (Legrum, Fasold & Passow, 1980), the latter is inhibited. Both effects are potentiated after dansylation in the presence of 2-(4-amino-3-sulphophenyl)-6-methyl-7-benzothiazol sulphonic acid (APMB), a disulphonic acid that combines non-covalently with the 4,4′-diisothiocyanate dihydrostilbene-2,2′-disulphonic acid (H2DIDS) binding site of the anion transport protein.

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