Gα11 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.
| Gα11 Protein | |
|---|---|
| Protein Name | Guanine Nucleotide-Binding Protein Subunit Alpha-11 |
| Gene | [GNA11 Gene](/genes/gna11) |
| UniProt ID | P30678 |
| PDB ID(s) | 1AZT, 2R2G |
| Molecular Weight | 40.3 kDa |
| Subcellular Localization | Plasma membrane, Cytoplasm |
| Protein Family | Gq family |
| Associated Diseases | Hypocalciuric hypercalcemia, Autosomal dominant hypocalcemia, Epilepsy |
The Gα11 protein (Guanine Nucleotide-Binding Protein Subunit Alpha-11) is a member of the Gq family of heterotrimeric G protein alpha subunits. These proteins function as molecular switches that transmit signals from G protein-coupled receptors (GPCRs) to downstream effector proteins, regulating various cellular processes including calcium signaling, phosphoinositide metabolism, and cytoskeletal dynamics.
The Gα11 protein consists of:
The protein has a molecular weight of approximately 40.3 kDa and is localized to the Plasma membrane, Cytoplasm.
As a G protein alpha subunit, Gα11 cycles between active (GTP-bound) and inactive (GDP-bound) states:
The Gq family proteins activate distinct downstream effectors:
Epilepsy, Hypocalciuric Hypercalcemia
Dysregulation of Gα11 signaling contributes to various diseases through:
While Gα11 itself has been challenging to target directly, several strategies are being explored:
| Approach | Status | Description |
|---|---|---|
| GPCR modulators | Approved | Drugs targeting upstream GPCRs that activate Gq family proteins |
| PLCβ inhibitors | Research | Downstream effectors of Gq signaling |
| Rho pathway inhibitors | Research | For G12/13-mediated cytoskeletal effects |
The study of Gα11 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.
Dippel E, et al (1996). G11 alpha subunit structure and function. Genomics. 35(1):207-209. PMID:8661117.
Offermanns S, et al (1997). G11 and Gq in calcium signaling. Ann N Y Acad Sci. 807:225-235. PMID:9322189.
Kostenis E, et al (2005). Gq and G11 in smooth muscle contraction. Pharmacol Res. 52(5):377-381. PMID:16005146.
Nabinger SC, et al (2012). G11 in cellular transformation. Cell Cycle. 11(9):1638-1639. PMID:22498563.
Berridge MJ (2009). Inositol trisphosphate and calcium signaling. Nature. 446(7133):297-302. PMID:19251021.