Specialization of Rabbit Reticulocyte Transfer RNA Content for Hemoglobin Synthesis

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Science  12 Feb 1971:
Vol. 171, Issue 3971, pp. 577-579
DOI: 10.1126/science.171.3971.577


The amount of acceptance of each amino acid per absorbancy unit of rabbit reticulocyte transfer RNA was determined. The results were compared with the amino acid composition of rabbit hemoglobin and with a similar determination of the transfer RNA content of rabbit liver. The histidine and isoleucine transfer RNA content of reticulocytes is specialized for the synthesis of hemoglobin, in which histidine is unusually common and isoleucine unusually scarce compared to most proteins.

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