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Hoffmann, R. A wiki for the life sciences where authorship matters. Nature Genetics (2008)

Cloning and identification of a novel human ubiquitin-like protein, DC-UbP, from dendritic cells.

Several ubiquitin-like proteins recently discovered have been confirmed to modify proteins akin to ubiquitinization for fine-regulation of intracellular proteins. In the present study, we report a novel ubiquitin-like protein from human dendritic cells (DC), named as dendritic cell-derived ubiquitin-like protein (DC-UbP). The full-length of DC-UbP cDNA is 565bp and encodes 106 amino acids. Ubiquitin domain (UBQ) in DC-UbP shares 28.6% identity and 55% similarity to ubiquitin, but does not possess the conserved C-terminus Gly-Gly of ubiquitin required for ubiquitinization. DC-UbP localized in cytoplasm, especially in mitochondrion, indicating that it may play a role in mitochondrial biology. DC-UbP mRNA was expressed in various tumor cells, but not in adult human normal tissues, suggesting that DC-UbP might be related to tumor genesis. In addition, DC-UbP mRNA expression decreased in the HL60 cells undergoing apoptosis after being stimulated with TRAIL and in the differentiated HL60 cells induced by ARTA. Taken together, DC-UbP might be downregulated during cellular differentiation and apoptosis.[1]


  1. Cloning and identification of a novel human ubiquitin-like protein, DC-UbP, from dendritic cells. Liu, S., An, H., Li, N., Yu, Y., Lin, N., Wan, T., Zhang, M., Wang, W., Cao, X. Biochem. Biophys. Res. Commun. (2003) [Pubmed]
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