| Ribophorin I Protein | |
|---|---|
| Protein Name | Ribophorin I (RPN1) |
| Gene | RPN1 |
| UniProt | P46976 |
| Molecular Weight | 63 kDa |
| Subcellular Localization | Rough Endoplasmic Reticulum membrane |
| Protein Family | Ribophorin family |
| Topology | Type I transmembrane protein |
Ribophorin I Protein is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Ribophorin I (encoded by RPN1) is a transmembrane protein of the rough endoplasmic reticulum (RER) and a core component of the oligosaccharyltransferase (OST) complex. The protein was originally identified as being associated with ribosomes, hence its name (ribophorin) [1]. It plays essential roles in protein translocation across the ER membrane and N-linked glycosylation.
Ribophorin I is expressed in all eukaryotic cells, with highest levels in secretory tissues. The protein is localized to the rough ER, where it is positioned to interact with ribosomes and nascent polypeptide chains.
Ribophorin I has a characteristic type I membrane protein structure:
The lumenal domain contains multiple N-glycosylation sites and forms the interface with the OST catalytic subunits.
Ribophorin I participates in:
As part of the OST, Ribophorin I:
Ribophorin I may contribute to AD through:
Dysregulation of RPN1 may affect:
The study of Ribophorin I Protein has evolved significantly over the past decades. Research in this area has revealed important insights into the underlying mechanisms of neurodegeneration and continues to drive therapeutic development.
Historical context and key discoveries in this field have shaped our current understanding and will continue to guide future research directions.