P35 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.
Overview
p35 (also known as CDK5R1) is the neuronal-specific regulatory subunit of cyclin-dependent kinase 5 ([CDK5](/proteins/cdk5-protein)). It plays a critical role in brain development, synaptic plasticity, and neuronal function. The p35/CDK5 complex is essential for proper neuronal migration, axon guidance, and synapse formation during development and throughout life [@tsai1994][@lew1994].
Molecular Characteristics
Protein Structure
The p35 protein contains several key structural features:
P35 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.
Overview
p35 (also known as CDK5R1) is the neuronal-specific regulatory subunit of cyclin-dependent kinase 5 ([CDK5](/proteins/cdk5-protein)). It plays a critical role in brain development, synaptic plasticity, and neuronal function. The p35/CDK5 complex is essential for proper neuronal migration, axon guidance, and synapse formation during development and throughout life [@tsai1994][@lew1994].
Molecular Characteristics
Protein Structure
The p35 protein contains several key structural features:
N-terminal myristoylation site — enables membrane association and localization
[CDK5](/proteins/cdk5-protein) binding domain — mediates interaction with [CDK5](/genes/cdk5) to form the active kinase complex
p10 cleavage site — calpain-mediated cleavage generates the p10 subunit
p25 cleavage product — pathological cleavage generates p25 in disease states [@patrick1999]
Normal Function
Neuronal Development
During embryonic and early postnatal development, p35/CDK5 regulates:
Neuronal migration — Controls radial migration of cortical [neurons](/entities/neurons)
Axon guidance — Regulates axonal outgrowth and pathfinding
Synaptogenesis — Essential for proper synapse formation and maturation
Cytoskeletal dynamics — Phosphorylates [tau](/proteins/tau), MAP1B, and neurofilament proteins [@ohshima1996][@nikolic1996]
The study of P35 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.