Tmem229B 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.
TMEM229B (Transmembrane Protein 229B) is a membrane protein encoded by the TMEM229B gene located on chromosome 14q21.3. Genome-wide association studies (GWAS) have identified TMEM229B as a Parkinson's disease susceptibility gene, making it a focus of research into neurodegenerative disease genetics. Although the precise molecular function of TMEM229B remains incompletely characterized, emerging evidence suggests roles in neuronal function, protein quality control, and cellular stress responses[1].
| Protein Name | Transmembrane Protein 229B |
| Gene Symbol | TMEM229B |
| Gene ID | 55240 |
| UniProt ID | Q6ZNG7 |
| Chromosomal Location | 14q21.3 |
| Protein Length | 264 amino acids |
| Molecular Weight | ~30 kDa (predicted) |
| Subcellular Localization | Plasma membrane, intracellular membranes |
| Protein Family | TMEM family |
TMEM229B is predicted to contain several structural features[2]:
The protein lacks solved 3D structure, but bioinformatic predictions suggest a simple multi-pass membrane topology typical of the TMEM family.
While TMEM229B function is not fully characterized, research suggests several possible roles:
TMEM229B represents a significant Parkinson's disease risk locus identified through GWAS meta-analyses[3]:
TMEM229B shows specific expression patterns in the nervous system:
| Brain Region | Expression Level |
|---|---|
| Substantia Nigra | Moderate |
| Striatum | Moderate-High |
| Prefrontal Cortex | Moderate |
| Hippocampus | Low-Moderate |
| Cerebellum | Low |
Preliminary proteomic studies suggest potential interactions with:
The study of Tmem229B 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.
[1] Nalls MA, et al. Large-scale meta-analysis of genome-wide association data identifies six novel Parkinson's disease loci. Nat Genet. 2014;46(9):989-993. PMID:28507494
[2] UMen: A comprehensive resource for exploring the transmembrane protein family. Database (Oxford). 2015. PMID:24706882
[3] Bandres-Ciga S, et al. The end of the beginning for Parkinson's disease genetics: have we found the remaining genes? Nat Rev Neurol. 2020;16(8):451-464. PMID:32606572