Multiubiquitin chain receptor involved in modulation of proteasomal degradation. Binds to 'Lys-48'-linked polyubiquitin chains in a length-dependent manner and with a lower affinity to 'Lys-63'-linked polyubiquitin chains. Proposed to be capable to bind simultaneously to the 26S proteasome and to polyubiquitinated substrates and to deliver ubiqui
[1] "Purification and cloning of a nucleotide excision repair complex involving the Xeroderma pigmentosum group C protein and a human homologue of yeast RAD23."Masutani C., Sugasawa K., Yanagisawa J., Sonoyama T., Ui M., Enomoto T., Takio K., Tanaka K., v
