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    Proc Natl Acad Sci U S A. 1991 Jan 1;88(1):258-62.

    Molecular cloning, sequence, and tissue distribution of the human ubiquitin-activating enzyme E1.

    Handley PM, Mueckler M, Siegel NR, Ciechanover A, Schwartz AL.

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    Department of Cell Biology, Washington University School of Medicine, St. Louis, MO.

    Erratum in

    Abstract

    The ubiquitin-activating enzyme E1 catalyzes the first step in ubiquitin conjugation. We have cloned and sequenced the cDNA for human E1. This clone predicts a protein of 110,450 Da. Cys-194 lies within a region of identity to active-site Cys-88 of the ubiquitin carrier protein E2, suggesting a potential role for this region in enzymatic function of this protein. In addition, Cys-454 lies within a region of identity to the thiol ester consensus sequence of several proteins involved in thioester formation. Tissue distribution reveals a single 3.5-kilobase E1 message ubiquitous among tissues and cell lines.

    PMID:
    1986373
    [PubMed - indexed for MEDLINE]
    PMCID:
    PMC50789
    Free PMC Article

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