Cysteine-containing peptide tag for site-specific conjugation of proteins

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United States of America Patent

PATENT NO 7355019
APP PUB NO 20050221431A1
SERIAL NO

11083508

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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The present invention is directed to a biological conjugate, comprising: (a) a targeting moiety comprising a polypeptide having an amino acid sequence comprising the polypeptide sequence of SEQ ID NO:2 and the polypeptide sequence of a selected targeting protein; and (b) a binding moiety bound to the targeting moiety; the biological conjugate having a covalent bond between the thiol group of SEQ ID NO:2 and a functional group in the binding moiety. The present invention is directed to a biological conjugate, comprising: (a) a targeting moiety comprising a polypeptide having an amino acid sequence comprising the polypeptide sequence of SEQ ID NO:2 and the polypeptide sequence of a selected targeting protein; and (b) a binding moiety that comprises an adapter protein, the adapter protein having a thiol group; the biological conjugate having a disulfide bond between the thiol group of SEQ ID NO:2 and the thiol group of the adapter protein. The present invention is also directed to biological sequences employed in the above biological conjugates, as well as pharmaceutical preparations and methods using the above biological conjugates.

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Patent Owner(s)

  • SIBTECH, INC.

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Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Backer, Joseph M W. Simsbury, CT 13 245
Backer, Marina V W. Simsbury, CT 7 113

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