Unformatted text preview: (Assume a value of 110 for the average weight of an amino acid residue.) b) A 660 mg sample of an oligomeric protein ( M r 132,000) was treated with an excess of dansyl chloride under slightly alkaline conditions in order to saturate available amino groups with the reagent. The labeled protein was subjected to acid hydrolysis, and the hydrolysate was found to contain 7.0 mg of dansyl-val as the only α-dansylated amino acid. Calculate the number of polypeptide chains in the oligomer, and suggest a technique for determining whether or not the polypeptides composing the protein are identical....
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- pH, amino acid residue, protein bacteriorhodopsin, α-dansylated amino acid, salt-loving bacterium Halobacterium