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Ubiquitin and other ubiquitin-like proteins play important roles in post-translational modification. They are phylogenetically well-conserved in eukaryotes. Activated by other proteins, ubiquitin and ubiquitin-like proteins can covalently modify target proteins. The enzymes responsible for the activation of this modification have been known to include UBA1, SAE2, UBA3, SAE1 and ULA1. Here we report a new ubiquitin activating enzyme like cDNA, named ubiquitin activating enzyme E1-domain containing 1 (UBE1DC1), whose cDNA is 2654 base pairs in length and contains an open reading frame encoding 404 amino acids. The UBE1DC1 gene consists of 12 exons and is located at human chromosome 3q22. The result of RT-PCR showed that UBE1DC1 is expressed in most of human tissues.
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