Fig. 6.
The effect of the GPIbα mutations on the sulfation of the tyrosine residues.
Transfected cell lines were metabolically labeled with [35S]-sulfur in sulfate-free media, immunoprecipitated, and then equal amounts were loaded onto 7.5% SDS-PAGE as described in “Materials and methods.” (+) indicates incorporation and (−) indicates no incorporation of [35S]. The image shown is a representation of 4 experiments.