CDK11B

CDK11B — Cyclin Dependent Kinase 11B

Introduction

Cdk11B is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

<div class="infobox infobox-gene"> [@cdkb2019]
<table> [@rna2020]
<tr><th colspan="2" style="background:#e8f4f8; text-align:center; font-size:1.1em;">CDK11B</th></tr> [@cdk2021]
<tr><td><strong>Gene Symbol</strong></td><td>CDK11B</td></tr> [@cell2022]
<tr><td><strong>Full Name</strong></td><td>Cyclin Dependent Kinase 11B</td></tr>
<tr><td><strong>Chromosome</strong></td><td>1p36.21</td></tr>
<tr><td><strong>NCBI Gene ID</strong></td><td>[984](https://www.ncbi.nlm.nih.gov/gene/984)</td></tr>
<tr><td><strong>OMIM</strong></td><td>[300303](https://www.omim.org/entry/300303)</td></tr>
<tr><td><strong>Ensembl ID</strong></td><td>ENSG00000167257</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>[Q9UQ88](https://www.uniprot.org/uniprot/Q9UQ88)</td></tr>
<tr><td><strong>Associated Diseases</strong></td><td>Cancer, Neurodevelopmental Disorders, Neurodegeneration</td></tr>
</table>
</div>

Overview

...

CDK11B — Cyclin Dependent Kinase 11B

Introduction

Cdk11B is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.

<div class="infobox infobox-gene"> [@cdkb2019]
<table> [@rna2020]
<tr><th colspan="2" style="background:#e8f4f8; text-align:center; font-size:1.1em;">CDK11B</th></tr> [@cdk2021]
<tr><td><strong>Gene Symbol</strong></td><td>CDK11B</td></tr> [@cell2022]
<tr><td><strong>Full Name</strong></td><td>Cyclin Dependent Kinase 11B</td></tr>
<tr><td><strong>Chromosome</strong></td><td>1p36.21</td></tr>
<tr><td><strong>NCBI Gene ID</strong></td><td>[984](https://www.ncbi.nlm.nih.gov/gene/984)</td></tr>
<tr><td><strong>OMIM</strong></td><td>[300303](https://www.omim.org/entry/300303)</td></tr>
<tr><td><strong>Ensembl ID</strong></td><td>ENSG00000167257</td></tr>
<tr><td><strong>UniProt ID</strong></td><td>[Q9UQ88](https://www.uniprot.org/uniprot/Q9UQ88)</td></tr>
<tr><td><strong>Associated Diseases</strong></td><td>Cancer, Neurodevelopmental Disorders, Neurodegeneration</td></tr>
</table>
</div>

Overview

Cyclin-Dependent Kinase 11B (CDK11B) is a member of the CDK (cyclin-dependent kinase) family, a group of serine/threonine kinases that regulate the cell cycle and various cellular processes. CDK11B is encoded by the CDK11A gene locus through alternative splicing and is widely expressed in human tissues, including the brain. CDK11B plays essential roles in RNA splicing, cell cycle progression, transcription regulation, and has been implicated in neuronal development and synaptic function. Dysregulated CDK11B expression and activity contribute to cancer progression and may play roles in neurodegenerative diseases including Alzheimer's disease (AD), Parkinson's disease (PD), and amyotrophic lateral sclerosis (ALS).

Function

Cell Cycle Regulation

CDK11B functions in cell cycle control:

• Associates with cyclin L1, L2, and L3
• phosphorylates the C-terminal domain (CTD) of RNA polymerase II
• Regulates transcription elongation
• Controls pre-mRNA processing

CDK11B activity is required for:

• G2/M transition
• Mitotic progression
• Cell proliferation

RNA Processing

CDK11B is a key regulator of RNA metabolism:

• Phosphorylates Ser2 and Ser5 of the RNA Pol II CTD
• Coordinates transcription and splicing
• Regulates alternative splicing
• Processes snRNAs (small nuclear RNAs)

The CDK11B-cyclin L complex localizes to nuclear speckles and regulates:

• Spliceosome assembly
• mRNA maturation
• RNA export

Neuronal Functions

In [neurons](/entities/neurons), CDK11B is involved in:

• Neurodevelopment and neuronal differentiation
• Synaptic plasticity
• Activity-dependent gene expression
• RNA metabolism in synapses
• Regulation of immediate-early genes

CDK11B localizes to:

• Neuronal nuclei
• Dendritic compartments
• Synaptic terminals

Transcription Regulation

CDK11B affects transcription through:

• CTD phosphorylation
• Interaction with transcription factors
• Regulation of elongation factors
• Control of RNA processing

Disease Associations

Cancer

CDK11B overexpression is common in many cancers:

• Lung cancer
• Breast cancer
• Colorectal cancer
• Gliblastoma
• Leukemia

Oncogenic roles include:

• Enhanced cell proliferation
• Resistance to [apoptosis](/entities/apoptosis)
• Metastatic potential
• RNA processing alterations

CDK11B promotes cancer through:

• Dysregulated cell cycle progression
• Altered transcription programs
• Enhanced RNA splicing of oncogenic isoforms

Neurodevelopmental Disorders

CDK11B mutations may contribute to:

• Intellectual disability
• Autism spectrum disorders
• Developmental delay
• Brain malformation

Neurodegenerative Diseases

Alzheimer's Disease:

• CDK11B expression is altered in AD brain
• RNA splicing defects are common in AD
• CTD phosphorylation patterns change in AD
• CDK11B may contribute to [tau](/proteins/tau) pathology through splicing regulation

Parkinson's Disease:

• RNA processing defects in PD
• Altered transcription programs
• Cell cycle re-entry in dopaminergic neurons

Amyotrophic Lateral Sclerosis:

• RNA metabolism defects in ALS
• [TDP-43](/mechanisms/tdp-43-proteinopathy) pathology affects splicing
• CDK11B may modify RNA processing

Huntington's Disease:

• Transcriptional dysregulation
• Splicing alterations
• Mutant [huntingtin](/proteins/huntingtin) affects CDK11B function

Expression

CDK11B is ubiquitously expressed with highest levels in:

• Brain
• Testis
• Lymphoid tissues
• Lung

In the brain, CDK11B is expressed in:

• Cerebral [cortex](/brain-regions/cortex) (neurons, glia)
• [Hippocampus](/brain-regions/hippocampus) (CA pyramidal neurons, dentate gyrus)
• Cerebellum (Purkinje cells)
• Basal ganglia
• Spinal cord motor neurons

Expression is developmentally regulated with high expression during brain development.

Therapeutic Implications

Cancer Therapy

CDK11B is a potential therapeutic target:

• Small molecule CDK11 inhibitors
• Combination with other targeted therapies
• Synthetic lethality approaches

Neurodegeneration

Modulating CDK11B in neurodegeneration:

• Targeting RNA processing defects
• Correcting splicing abnormalities
• Modulating cell cycle re-entry

Cross-links

• [Cell Cycle in Neurodegeneration](/mechanisms/cell-cycle-neurodegeneration)
• [RNA Processing](/mechanisms/rna-processing)
• [Alzheimer's Disease Mechanisms](/diseases/alzheimers-disease)
• [Parkinson's Disease Mechanisms](/diseases/parkinsons-disease)
• [CDK Family](/entities/cdk-family)

See Also

• [Genes Index](/genes)
• [Kinases](/entities/kinases)
• [CDK11A](/genes/cdk11a)
• [Cyclin L](/genes/ccnl1)

Background

The study of Cdk11B 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.

External Links

• [PubMed](https://pubmed.ncbi.nlm.nih.gov/) - Biomedical literature
• [Alzheimer's Disease Neuroimaging Initiative](https://adni.loni.usc.edu/) - Research data
• [Allen Brain Atlas](https://brain-map.org/) - Brain gene expression data

References

[Unknown, CDK11 functions in RNA processing and transcription (2018) (2018)](https://pubmed.ncbi.nlm.nih.gov/29360914/)

[Unknown, CDK11B in cancer progression (2019) (2019)](https://pubmed.ncbi.nlm.nih.gov/31082945/)

[Unknown, RNA splicing in neurodegenerative disease (2020) (2020)](https://pubmed.ncbi.nlm.nih.gov/32248234/)

[Unknown, CDK family in neuronal function (2021) (2021)](https://pubmed.ncbi.nlm.nih.gov/34089247/)

[Unknown, Cell cycle dysregulation in neurodegeneration (2022) (2022)](https://pubmed.ncbi.nlm.nih.gov/34958421/)