Human interferon omega (omega) binds to the alpha/...[J Biol Chem. 1991]

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1: J Biol Chem. 1991 Oct 25;266(30):19875-7. Links

Human interferon omega (omega) binds to the alpha/beta receptor.

Flores I, Mariano TM, Pestka S.

Department of Molecular Genetics and Microbiology, University of Medicine and Dentistry of New Jersey-Robert Wood Johnson Medical School, Piscataway 08854-5635.

It was proposed that human interferon omega (omega) binds to the interferon alpha/beta receptor but not to the interferon gamma receptor. However, since no studies were performed to provide direct evidence for this hypothesis, we carried out cross-linking experiments and saturation binding assays between a 32P-labeled human interferon-alpha (Hu-IFN-alpha) and unlabeled Hu-IFN-alpha A, -beta, -gamma, and -omega. These assays demonstrated that Hu-IFN-alpha A, -beta, and -omega, but not Hu-IFN-gamma, were able to block binding of 32P-labeled Hu-IFN-alpha A to human cells. These results indicate that Hu-IFN-omega binds to the alpha/beta receptor.

PMID: 1834641 [PubMed - indexed for MEDLINE]

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