¶ ANKRD11 Protein — Ankyrin Repeat Domain 11
ANKRD11 (Ankyrin Repeat Domain 11) encodes a transcriptional regulator containing ankyrin repeat domains. It functions as a coactivator for histone acetylation and regulates gene expression during neuronal development.
ANKRD11 Protein (Ankyrin Repeat Domain 11) is a transcriptional co-regulator that modulates gene expression through histone acetylation. It is crucial for neural development and its dysfunction is linked to KBG syndrome.
| Attribute |
Value |
| Protein Name |
Ankyrin repeat domain-containing protein 11 |
| Gene |
ANKRD11 |
| UniProt ID |
Q9Y2J0 |
| PDB Structure |
4PC6, 5YJC |
| Molecular Weight |
~276 kDa |
| Subcellular Localization |
Nucleus |
| Protein Family |
Ankyrin repeat family |
ANKRD11 is a large protein with multiple functional domains:
- Ankyrin Repeat Domains: 8 ankyrin repeats that mediate protein-protein interactions
- N-terminal Region: Contains transcriptional activation domains
- PEST Sequences: Present in regulatory regions
- Nuclear Localization Signal: Confirms nuclear localization
The ankyrin repeats form a characteristic fold that mediates specific protein interactions.
- Histone Acetylation Coactivator: ANKRD11 interacts with histone acetyltransferases (p300/CBP)
- Chromatin Remodeling: Facilitates chromatin opening for transcription
- Gene Expression Control: Regulates genes involved in neuronal development and synaptic plasticity
- Nuclear Receptor Coactivator: Functions with nuclear hormone receptors
- Brain Development: Critical for proper brain development
- Neuronal Differentiation: Promotes neuronal differentiation
- Synapse Formation: Involved in synaptic development and plasticity
- Cognitive Function: Important for learning and memory
- Cell Growth Regulation: Controls cell proliferation and differentiation
- Stress Response: Involved in cellular stress responses
- Apoptosis Regulation: May protect against apoptotic cell death
Heterozygous ANKRD11 mutations cause KBG syndrome:
- Autosomal Dominant: Usually de novo mutations
- Intellectual Disability: Global developmental delay
- Macrocephaly: Enlarged head circumference
- Characteristic Facies: Distinctive facial features
- Dental Anomalies: Abnormal tooth development
- Seizures: Some patients develop seizures
- Autism Spectrum Disorder: Behavioral differences
- Implicated in autism spectrum disorder
- Associated with intellectual disability
- May affect synaptic function and neural circuit formation
Current approaches include:
- Gene Therapy: Potential for ANKRD11 gene replacement
- Epigenetic Modulators: HDAC inhibitors may have therapeutic potential
- Symptomatic Treatment: Management of seizures, behavioral issues
- Sirmaci et al., ANKRD11 mutations cause KBG syndrome (2011)
- Gallagher et al., ANKRD11 and transcriptional regulation (2015)
- Kleefstra et al., KBG syndrome clinical features (2012)