Gna13 Gene is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
| GNA13 Gene |
|---|
| Full Name | G Protein Subunit Alpha 13 |
| Chromosome | 17q21.31 |
| NCBI Gene ID | 10672 |
| OMIM | 604405 |
| Ensembl ID | ENSG00000127616 |
| UniProt ID | Q9UQF2 |
| Protein Family | Gq alpha subunit family |
| Associated Diseases | Cancer, Thrombosis, Epilepsy, Schizophrenia |
The GNA13 gene encodes the G Protein Subunit Alpha 13, a member of the Gq family of heterotrimeric G protein alpha subunits. This protein plays a critical role in G protein-coupled receptor (GPCR) signaling pathways that regulate various cellular responses including calcium mobilization, phosphoinositide hydrolysis, and cytoskeletal dynamics. Gα13 is particularly important in blood cells and is essential for platelet function, but is also expressed in neurons where it participates in synaptic transmission.
- Gene Location: Chromosome 17q21.31
- Exon Count: 11 exons spanning approximately 10 kb
- Protein Length: 377 amino acids
- Molecular Weight: ~43 kDa
The GNA13 protein transmits signals from G protein-coupled receptors (GPCRs) to intracellular effector proteins:
- GPCR Activation: Ligand binding to Gq-coupled receptors
- G Protein Activation: GDP/GTP exchange on Gα subunit
- Subunit Dissociation: Gα13-GTP dissociates from Gβγ dimer
- Effector Activation:
- Phospholipase Cβ (PLCβ)
- RhoGEFs (p115 RhoGEF, LARG)
- Paxillin and other scaffolding proteins
- PLCβ Pathway: IP3/DAG → Ca²⁺ mobilization → PKC activation
- RhoA Pathway: Cytoskeletal dynamics → cell migration
- Integrin Signaling: Cell adhesion and spreading
- Epilepsy: Gq signaling affects neuronal excitability
- Schizophrenia: Altered Gq pathway function
- Neurodevelopmental Disorders: Role in neuronal development
- Stroke: G13 signaling in cerebral blood flow
- Thrombosis: Essential for platelet activation and aggregation
- Cancer Metastasis: G13 signaling in cell migration
- Immune Disorders: B cell and macrophage function
- Brain: Moderate expression in cortex, hippocampus, basal ganglia
- Blood: High expression in platelets and leukocytes
- Cellular Localization: Postsynaptic densities, cytoskeleton
- Antithrombotic Drugs: G13 pathway inhibitors
- Cancer Therapy: Anti-metastatic agents targeting G13
- Neurological Disorders: Gq signaling modulators
- Platelet Biology: G13 in thrombosis and hemostasis
- Cancer Metastasis: Targeting G13 in cancer spread
- Neurobiology: G13 in synaptic function
- Holmberg M, et al. (2002). Galphaq/11-mediated signaling in neuropsychiatric disorders. Prog Neuropsychopharmacol Biol Psychiatry. 26(2):211-219. PMID:12553980
- Moers A, et al. (2003). G13 is essential for platelet activation. Blood. 101(11):4395-4401.
- Riobo NA, et al. (2007). Galpha12/13 signaling in the nervous system. Cell Signal. 19(1):31-38.
- Milligan G, et al. (2009). G protein-coupled receptor/G protein partnerships in the CNS. Neuropharmacology. 56(1):210-217.
- Worzfeld T, et al. (2018). G12/13 in cellular migration and metastasis. Pharmacol Ther. 183:120-129.
- Radhika V, et al. (2005). G alpha 13 as a signaling intermediate. Cell Signal. 17(10):1189-1203.
- Yang J, et al. (2020). GNA13 in cancer progression. Oncogene. 39(12):2391-2402.
- Dorsett SH, et al. (2018). G protein signaling in epilepsy. Adv Pharmacol. 81:187-220.
The study of Gna13 Gene 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.
- Abramovitz A, et al. Gα12 and Gα13 in signal transduction. J Biol Chem. 2023;298(3):101521. PMID:36796342
- Riobo NA, et al. Galpha12/13 signaling in the nervous system. Cell Signal. 2007;19(1):31-38. PMID:17029986
- Milligan G, et al. G protein-coupled receptor/G protein partnerships in the CNS. Neuropharmacology. 2009;56(1):210-217. PMID:18718459
- Worzfeld T, et al. G12/13 in cellular migration and metastasis. Pharmacol Ther. 2018;183:120-129. PMID:29031679
- Radhika V, et al. G alpha 13 as a signaling intermediate. Cell Signal. 2005;17(10):1189-1203. PMID:16005296
- Yang J, et al. GNA13 in cancer progression. Oncogene. 2020;39(12):2391-2402. PMID:31961856
- Dorsett SH, et al. G protein signaling in epilepsy. Adv Pharmacol. 2018;81:187-220. PMID:29325606
- Unger TJ, et al. G12/13-mediated signaling in neurodevelopment. Dev Neurobiol. 2022;82(4):316-331. PMID:35654226