DNA encoding streptavidin, streptavidin produced therefrom, fuse

Chemistry: molecular biology and microbiology – Vector – per se

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435 68, 435 70, 4351723, 4352402, 4353171, 43525233, 435235, 536 27, 935 11, 935 29, 935 32, 935 47, 935 48, C12N 1500, C12P 2100, C12P 2102, C07H 1512

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048392936

ABSTRACT:
DNA which encodes the polypeptide streptavidin has been isolated as a fragment 2 kb in length derived from a restriction endonuclease digestion of the chromosomal DNA of Streptomyces avidinii. The nucleic acid sequence of the gene and the amino acid sequence of the polypeptide have been determined. A fused gene has been prepared which comprises the streptavidin gene fused to a gene encoding the human LDL receptor. Expression of the gene fusion results in a fused streptavidin-human LDL receptor polypeptide. Methods are provided for using the fused gene to produce labeled, chemically modified proteins in vivo and to isolate a protein knowing only the nucleotide sequence of the gene encoding the protein.

REFERENCES:
patent: 4356270 (1982-10-01), Itakura
patent: 4438032 (1984-03-01), Golde et al.
patent: 4478914 (1984-10-01), Giese
patent: 4617261 (1986-10-01), Sheldon et al.

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