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|Title:||Human growth hormone DNA|
|Abstract:||Described are methods and means for the construction and microbial expression of quasi-synthetic genes arising from the combination of organic synthesis and enzymatic reverse transcription from messenger RNA sequences incomplete from the standpoint of the desired protein product. Preferred products of expression lack bio-inactivating leader sequences common in eukaryotic expression products but problematic with regard to microbial cleavage to yield bioactive material. Illustrative is a preferred embodiment in which a gene coding for human growth hormone (useful in, e.g., treatment of hypopituitary dwarfism) is constructed and expressed.|
|Inventor(s):||Goeddel; David V. (Burlingame, CA), Heyneker; Herbert L. (Burlingame, CA)|
|Assignee:||Genentech, Inc. (South San Francisco, CA)|
|Filing Date:||Apr 13, 1987|
|Claims:||1. A DNA molecule consisting of DNA encoding amino acids 1-191 of human growth hormone. |
2. A DNA molecule consisting of DNA encoding methionine joined to the 5'-terminus of DNA encoding amino acids 1-191 of human growth hormone.
3. A DNA molecule comprising DNA encoding amino acids 1-191 of human growth hormone joined to DNA encoding an amino acid sequence that is specifically cleavable so as to permit extracellular cleavage of human growth hormone, unaccompanied by its leader sequence or other extraneous protein, from a proteolysis-resistant conjugate after expression of said conjugate.
4. A DNA molecule comprising the DNA molecule of claim 3 inserted into a replicable cloning vehicle.
5. The DNA molecule of claim 4 wherein the replicable cloning vehicle is a bacterial plasmid.