Puromycin photoaffinity labels small- and large-subunit proteins at the A site of the Drosophila ribosome.

Abstract

[3H]Puromycin covalently incorporates into the protein and to a much lesser extent into the RNA components of Drosophila ribosomes in the presence of 254-nm light. The photoincorporation reaction takes place with a small number of large- (L2 and L17) and small- (S8 and S22) subunit proteins as determined by two-dimensional gel analysis. More quantitative… (More)

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