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Dual labeled peptides as tools to study receptors: nanomolar affinity derivatives of TIPP (Tyr-Tic-Phe-Phe) containing an affinity label and biotin as probes of delta opioid receptors.


ABSTRACT: A general strategy for the design of dual labeled peptides was developed, and derivatives of the delta opioid receptor (DOR) selective antagonist TIPP (Tyr-Tic-Phe-PheOH) containing both an affinity label and biotin were prepared by solid-phase synthesis. Tyr-Tic-Phe-Phe(p-X)-Asp-NH(CH2CH2O)2-CH2CH2NH-biotin (where X = N=C=S or NHCOCH2Br) exhibit nanomolar DOR affinity. The ability to detect receptors labeled with these peptides following solubilization and SDS-PAGE demonstrate the applicability of this design approach for dual labeled peptide derivatives.

SUBMITTER: Aldrich JV 

PROVIDER: S-EPMC2757550 | biostudies-literature |

REPOSITORIES: biostudies-literature

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