Abstract
One more mechanism for regulating surface expression of MHC class II proteins in dendritic cells (an important process that regulates both tolerance and immunity) has been uncovered, polyubiquitination of Lys225 in the intracytoplasmic region and subsequent endocytosis and proteolysis (Omura-Hoshino et al., 2006; van Neil et al., 2006; Shin et al., 2006).
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