Abstract

The structural properties of purified human growth hormone (hGH) produced by Escherichia coli K-12 into which the hGH gene has been inserted have been fully characterized by high-pressure liquid chromatography of native hGH and tryptic digests of hGH. All of the tryptic peptides have been separated by high-pressure liquid chromatography and their sequence determined. Comparison of the primary structure with that of the purified pituitary-derived hGH has established the integrity of the biosynthetic hGH disulfide arrangement and amino acid sequence with the presence of an extra NH 2-terminal methionine.

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