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Background
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Ribophorins 1 and 2 are abundant and highly conserved glycoproteins residing in the endoplasic reticulum, that participate in ribosome binding. Mammalian oligosaccharyltransferase activity is associated with a protein complex composed of RPN1, RPN2, and an oligosaccharyltransferase protein. RPN1 is a component of the proteasome base. The ubiquitin-like (UBL) domain of recombinant Rad23 interacts with proteasomes through the leucine-rich repeat domain of RPN1. The RPN1 gene maps to chromosome 3 in somatic cell hybrids, and the RPN2 gene maps to chromosome 20 by in situ hybridization.
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Background
References
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- Fu, J., et al., J. Biol. Chem. 275(6):3984-3990 (2000).
- Pekarsky, Y., et al., Cancer Res. 57(18):3914-3919 (1997).
- Crimaudo, C., et al., EMBO J. 6(1):75-82 (1987).
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