Phorbol ester induces phosphorylation and down-regulation of connexin 43 in WB cells. |
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Authors: | S Y Oh C G Grupen A W Murray |
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Affiliation: | School of Biological Sciences, Flinders University, Adelaide, Australia. |
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Abstract: | Western blot analysis indicated that WB cells contained multiple proteins of molecular mass 42-47 K which reacted with anti-connexin 43 antibody. Incubation of cells with 12-O-tetradecanoylphorbol-13-acetate (TPA) for 5 min caused the inhibition of dye transfer and the appearance of reactive material of 50 K which was abolished by acid phosphatase. Longer term incubation with TPA caused loss of connexin 43 protein. |
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