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Fig. 11. No complexes are formed between dystroglycan or the Lutheran blood group
molecule and CD151-
3ß1 complexes in human podocytes and proximal
tubular epithelial cells in culture. Human podocytes (upper panels) and
proximal tubular epithelial cells (PTEC) (lower panels) expressing the laminin
receptors
3ß1, dystroglycan (DG) and Lutheran blood group antigens
(LU) were lysed in 1% CHAPS and precipitated with polyclonal antibodies
against
3 or DG (AP83) and mAbs against CD151 (P48) or LU (LU4F2). The
immunoprecipitates were analyzed by immunoblotting for the presence of
3 and DG using specific antibodies. Note that DG is not coprecipitated
with
3ß1 or CD151 and that
3ß1 is not seen in the
precipitates obtained by antibodies against LU or DG.
3L,
3 light chain; ß-DG, ß-dystroglycan.