DF 31, a sperm decondensation factor from Drosophila melanogaster: purification and characterization.


We have purified to homogeneity a Drosophila protein which is able to decondense Xenopus sperm chromatin. This protein, which we have called DF 31, is a heat-stable phosphoprotein which displays a molecular weight of 31 kDa on SDS-PAGE, but which has an apparent molecular weight of > 200 kDa on gel filtration. We show that DF 31 decondenses sperm DNA by… (More)


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