5 Ht4 Receptor 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.
HTR4 Protein - 5-HT4 Receptor Protein
| Protein Name | 5-HT4 Receptor Protein |
| Gene | HTR4 |
| UniProt ID | P51679 |
| PDB ID | 7SKC |
| Molecular Weight | 44 kDa |
| Subcellular Localization | Cell membrane, CNS and periphery |
| Protein Family | Serotonin receptor (Class A, GPCR) |
5-HT4 receptor has the typical 7-transmembrane domain structure of class A GPCRs. It contains conserved motifs including the DRY motif at the end of TM3 and the NPxxY motif in TM7. Multiple isoforms exist due to alternative splicing in the C-terminal tail, which affects G protein coupling and desensitization properties.
The 5-HT4 receptor is a Gs protein-coupled receptor that stimulates adenylyl cyclase, increasing intracellular cAMP levels. It is involved in smooth muscle relaxation in the gastrointestinal tract, memory and learning in the brain, and secretion from exocrine glands. The receptor exists in multiple splice variants (5-HT4a, 5-HT4b, 5-HT4d, 5-HT4e, 5-HT4f, 5-HT4g, 5-HT4h) with different tissue distributions and signaling properties.
5-HT4 receptors are implicated in Alzheimer's disease, where agonism may enhance memory consolidation and protect against amyloid-beta toxicity. In Parkinson's disease, 5-HT4 agonists may improve cognitive function. The receptor is also a target for treating functional gastrointestinal disorders and depression.
5-HT4 agonists such as prucalopride and mosapride are used clinically for gastrointestinal motility disorders. In development are compounds for cognitive enhancement in Alzheimer's disease and depression. Partial agonists may have fewer side effects.
Current research on 5-HT4 receptor includes:
Key findings from animal studies:
5-HT4 has clinical relevance:
The study of 5 Ht4 Receptor 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.
Current research on 5-HT4 receptor includes:
Key findings from animal studies:
5-HT4 has clinical relevance:
[1] J. M. O'Donnell et al., "Serotonin receptor signaling in neurodegeneration," Neuropharmacology, vol. 135, pp. 316-328, 2018. PMID:29550372
[2] M. G. R. Nichols et al., "Metabotropic glutamate receptors in CNS disease," Brain Research, vol. 1683, pp. 1-16, 2018. PMID:29444698
This section provides an overview of the structure and function.