Gnb4 — G Protein Subunit Beta 4 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| G Protein Subunit Beta 4 | |
|---|---|
| Gene Symbol | GNB4 |
| Full Name | G protein subunit beta 4 |
| Chromosome | 16q22.1 |
| NCBI Gene ID | 59345 |
| OMIM | 612731 |
| Ensembl ID | ENSG00000132688 |
| UniProt ID | Q9HAV0 |
| Associated Diseases | Charcot-Marie-Tooth Disease, Neuropathy |
GNB4 (G Protein Subunit Beta 4) is a beta subunit of heterotrimeric G proteins that couples G protein-coupled receptors (GPCRs) to downstream effector enzymes and ion channels. GNB4 is expressed in various tissues including brain, heart, and pancreas. As part of the Gβγ complex, GNB4 participates in numerous signaling pathways affecting neuronal excitability, synaptic transmission, and cellular proliferation. Genetic variants in GNB4 are associated with cardiovascular disease and cancer, highlighting its importance in cellular physiology.
GNB4 encodes the G protein beta subunit 4, a component of heterotrimeric G proteins that transduce signals from G protein-coupled receptors (GPCRs) to downstream effectors. The beta subunit forms a dimer with a gamma subunit and plays a critical role in signal transduction in the nervous system.
Expressed in various tissues including brain, particularly in the cerebellum and cerebral cortex. Involved in synaptic transmission and neuronal signaling.
| Disease | Variants | Inheritance | Mechanism |
|---|---|---|---|
| Charcot-Marie-Tooth Disease | D243N, G226S | Autosomal dominant | Peripheral neuropathy, impaired signal transduction |
The study of Gnb4 — G Protein Subunit Beta 4 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.