Nucleotide occupancy of F1-ATPase catalytic sites under crystallization conditions.

Abstract excerpt

Using site-directed tryptophan fluorescence we studied nucleotide occupancy of the catalytic sites of Escherichia coli F1-ATPase, under conditions used previously for crystallization and X-ray structure analysis of the bovine mitochondrial enzyme [Abrahams et al. (1994) Nature 370, 621-628]. We found that only two of the three catalytic sites were filled in the E. coli enzyme under these conditions (250 microM...

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