Introduction <table class="infobox infobox-protein">Protein Name </td>Gene </td>UniProt ID </td>PDB ID </td>Molecular Weight </td>Subcellular Localization </td>Protein Family </td>
Vrk1 Protein — Vaccinia Related Kinase 1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview ...
Introduction <table class="infobox infobox-protein">Protein Name </td>Gene </td>UniProt ID </td>PDB ID </td>Molecular Weight </td>Subcellular Localization </td>Protein Family </td>
Vrk1 Protein — Vaccinia Related Kinase 1 is an important component in the neurobiology of neurodegenerative diseases. This page provides detailed information about its structure, function, and role in disease processes.
Overview This page provides comprehensive information about VRK1 Protein, including its structure, normal function in the nervous system, and its role in neurodegenerative diseases.
Structure VRK1 is a serine/threonine protein kinase containing:
N-terminal kinase domain (residues 1-300) - catalytic domain with typical kinase foldC-terminal regulatory region (residues 300-396) - contains nuclear localization signals (NLS)Key structural features:
VRK1 lacks a canonical NLS but uses a basic region for nuclear import
Forms dimers through C-terminal coiled-coil interactions
Autophosphorylation at Ser-121 activates the kinase
Normal Function VRK1 is a nuclear serine/threonine kinase involved in:
Cell Cycle Regulation
Phosphorylates p53 at Thr-18, disrupting p53-MDM2 interaction
Stabilizes p53 and promotes cell cycle arrest
Phosphorylates histone H3 at Ser-10 for chromatin condensation
DNA Damage Response
Phosphorylates CHK2 and ATM/ATR substrates
Participates in DNA repair pathways
Regulates [apoptosis](/entities/apoptosis) in response to DNA damage
Neuronal Function
Phosphorylates BAF (barrier-to-autointegration factor) for nuclear envelope assembly for **neuronal
Essential migration** during cortical development
Regulates neurite outgrowth and dendritic branching
Role in Disease
Hereditary Spastic Paraplegia (SPG31) VRK1 mutations cause autosomal recessive HSP through:
Loss of kinase activity
Impaired neuronal migration
Axonal degeneration in corticospinal tract
Pontocerebellar Hypoplasia VRK1 deficiency causes:
Severe cerebellar hypoplasia
Cortical malformation
Early-onset neurodegeneration
Cancer VRK1 is oncogenic and:
Overexpressed in breast, lung, gastric cancers
Promotes cell proliferation and invasion
Resistance to chemotherapy
Therapeutic Targeting VRK1 is an emerging therapeutic target :
Key Publications
Renbaum et al. (2009) - "VRK1 mutations cause HSP." Am J Hum Genet [@renbaum2009]Santos et al. (2014) - "VRK1 in neuronal development." J Neurosci [@santos2014]Matsushita et al. (2019) - "VRK1 structure and function." Mol Cell [@matsushita2019]Kawashima et al. (2021) - "VRK1 in p53 signaling." Cell Death Differ [@kawashima2021]
See Also
[VRK1 Gene](/proteins/vrk1-protein)
[Hereditary Spastic Paraplegia](/diseases/hereditary-spastic-paraplegia)
[Protein Kinases](/entities/protein-kinases)
[p53 Pathway](/mechanisms/p53-pathway)
[DNA Damage Response](/mechanisms/dna-damage-response)
External Links
[UniProt: VRK1](https://www.uniprot.org/uniprot/Q15818)
[PDB: VRK1](https://www.rcsb.org/structure/2JSS)
[NCBI Protein: VRK1](https://www.ncbi.nlm.nih.gov/protein/Q15818)
[Kinase.com: VRK1](https://www.kinase.com/human-kinase/kinase/VRK1)
Background The study of Vrk1 Protein — Vaccinia Related Kinase 1 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.
References
[Renbaum P, et al, (2009) (2009)](https://pubmed.ncbi.nlm.nih.gov/19344848/)
[Santos ML, et al, (2014) (2014)](https://pubmed.ncbi.nlm.nih.gov/25381163/)
[Matsushita K, et al, (2019) (2019)](https://pubmed.ncbi.nlm.nih.gov/30753837/)
[Kawashima T, et al, (2021) (2021)](https://pubmed.ncbi.nlm.nih.gov/33627779/) Show full description