| Protein Name |
cAMP-responsive element-binding protein 5 |
| Gene |
CREB5 |
| UniProt |
Q8TD36 |
| Molecular Weight |
65-75 kDa (isoform-dependent) |
| Structure |
bZIP transcription factor domain, transactivation domain |
| Subcellular Localization |
Nucleus |
| Protein Family |
CREB/ATF family |
Creb5 Protein — Camp Responsive Element Binding Protein 5 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
CREB5 (cAMP-responsive element-binding protein 5) is a transcription factor encoded by the CREB5 gene. It belongs to the CREB/ATF family of DNA-binding proteins that regulate gene expression in response to cAMP and calcium signaling. UniProt ID: Q8TD36.
¶ Domain Organization
- N-terminal activation domain — recruits transcriptional co-activators
- bZIP domain — DNA binding and dimerization
- Basic region: contacts DNA
- Leucine zipper: mediates dimerization
- Q-rich domain — glutamine-rich regulatory region
- Phosphorylation — Ser133 (canonical site) activates
- Acetylation — modulates activity
- Sumoylation — regulates transcriptional activity
CREB5 controls expression of genes involved in:
- Synaptic plasticity — BDNF, c-fos, Arc
- Metabolism — gluconeogenic enzymes
- Cell survival — anti-apoptotic genes
- Circadian clock — clock genes
Responds to multiple second messengers:
- cAMP → PKA → CREB phosphorylation
- Calcium → CaMKIV → CREB phosphorylation
- Growth factors → MAPK → CREB phosphorylation
- Impaired CREB-mediated transcription in AD
- Critical memory gene expression disrupted
- Synaptic plasticity deficits
- Therapeutic target for cognitive enhancement
- Protects dopaminergic neurons
- Regulates expression of neurotrophic factors
- May have therapeutic potential
- Transcriptional dysfunction in HD
- CREB activity reduced
- Contributing factor to neurodegeneration
- Phosphodiesterase inhibitors — increase cAMP, enhance CREB
- CREB-based gene therapy — deliver CREB5
- Small molecule activators — CBP/p300 enhancers
- Brain-penetrant CREB activators
- Combination with other neurotrophic factors
- epigenetic modulation approaches
The study of Creb5 Protein — Camp Responsive Element Binding Protein 5 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.
- CREB: a key regulator of memory formation. Annual Review of Neuroscience, 2007.
- CREB-mediated transcription in neurodegeneration. Trends in Neurosciences, 2012.
- Therapeutic potential of CREB modulation. Trends in Pharmacological Sciences, 2019.