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Details for Patent: 6,143,523

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Details for Patent: 6,143,523

Title: Human growth hormone variants
Abstract:Human growth hormone variants and their nucleic acids are disclosed wherein the amino acid residues at positions 10, 14, 18, 21, 167, 171, 174, 176 and 179 have been replaced with other amino acids. Also claimed are vectors and host cells comprising these human growth hormone variants as well as processes for their preparation.
Inventor(s): Cunningham; Brian C. (Piedmont, CA), Lowman; Henry (Hercules, CA), Wells; James A. (Burlingame, CA)
Assignee: Genentech, Inc. (San Francisco, CA)
Filing Date:Jun 06, 1995
Application Number:08/487,107
Claims:1. A nucleic acid encoding a human growth hormone variant comprising a set of amino acid substitutions selected from the group consisting of:

R167N, D171S, E174S, F176Y, I179T;

R167E, D171S, E174S, F176Y;

F10A, M14W, H18D, H21N;

F10A, M14W, H18D, H21N, R167N, D171S, E174S, F176Y, I179T;

F10A, M14W, H18D, H21N, R167N, D171A, E174S, F176Y, I179T;

F10H, M14G, H18N, H21N;

F10A, M14W, H18D, H21N, R167N, D171A, T175T, I179T; and

F10I, M14Q, H18E, R167N, D171S, I179T.

2. A vector comprising the nucleic acid of claim 1.

3. A host cell comprising the nucleic acid of claim 1.

4. A process for preparing a human growth hormone variant comprising:

(a) culturing a host cell comprising the nucleic acid of claim 1; and

(b) recovering the variant from the culture.

5. A human growth hormone variant comprising a set of amino acid substitutions selected from the group consisting of:

R167N, D171S, E174S, F176Y, I179T;

R167E, D171S, E174S, F176Y;

F10A, M14W, H18D, H21N;

F10A, M14W, H18D, H21N, R167N, D171S, E174S, F176Y, I179T;

F10A, M14W, H18D, H21N, R167N, D171A, E174S, F176Y, I179T;

F10H, M14G, H18N, H21N;

F10A, M14W, H18D, H21N, R167N, D171A T175T, I179T; and

F10I M14Q, H18E, R167N, D171S, I179T.

6. The variant of claim 5, wherein said variant is covalently attached to a polyethylene glycol molecule.
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