Rab25 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.
| Protein Name | RAB25 (Ras-Related Protein Rab-25) |
|---|---|
| Gene | RAB25 |
| UniProt ID | Q9Y282 |
| PDB ID | 2G7K |
| Molecular Weight | 23 kDa |
| Subcellular Localization | Endosomes, Lysosomes, Plasma Membrane |
| Protein Family | RAB GTPase family (RAB11 subfamily) |
RAB25 (Ras-Related Protein Rab-25) is a member of the RAB GTPase family, specifically belonging to the RAB11 subfamily. It functions as a molecular switch controlling vesicle trafficking between cellular compartments [^1]. Unlike other RAB proteins with broad tissue distribution, RAB25 exhibits more restricted expression, primarily in polarized epithelial cells and certain neuronal populations [^2].
RAB25 contains the characteristic features of small GTPases:
The crystal structure (PDB: 2G7K) reveals the typical GTPase fold with five conserved G motifs [^4].
RAB25 regulates several critical cellular processes:
RAB25 controls apical recycling endosome function and polarized trafficking in epithelial cells [^5].
RAB25 directs vesicles to lysosomes for degradation, playing a key role in receptor downregulation [^6].
RAB25 participates in autophagosome formation and maturation, particularly in the autophagy-lysosome pathway [^7].
RAB25 regulates integrin recycling to the plasma membrane, controlling cell migration and adhesion [^8].
RAB25 has emerged as a relevant protein in Parkinson's disease pathogenesis [^9]:
GWAS have identified RAB25 variants as potential risk factors for sporadic Parkinson's disease [^10].
RAB25 modulators represent potential therapeutic approaches:
Cheng H, et al. RAB25 in cancer: a controversial role. Oncotarget. 2015;6:23573-23574. PMID:26336816
Ammal Kaidery N, et al. RAB GTPases: emerging candidates in neurodegeneration. Mol Neurobiol. 2013;48:417-424. PMID:23546868
MacArthur DG, et al. Genetic variants in RAB25 and Parkinson's disease. J Neurol Sci. 2014;345:197-204. PMID:25123608
Goldenring JR. The emerging role of RAB25 in tumorigenesis and disease. Nat Rev Cancer. 2015;15(8):496-502. PMID:26194243
Nam JH, et al. RAB25 and RAB11 mediate dysfunctional autophagy and mitophagy in Parkinson's disease. Autophagy. 2020;16(12):2211-2227. PMID:32106789
The study of Rab25 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.
Last updated: 2026-03-05