Complexin 2 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.
Complexin 2 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
Mermaid diagram (expand to render)
Complexin-2 (CPLX2) is a 129-amino acid soluble protein that regulates synaptic vesicle fusion by binding to the SNARE complex. It modulates both spontaneous and evoked neurotransmitter release. [@giraud1998]
Protein Information
Structure
Complexin-2 contains:
N-terminal domain: Binds to assembled SNARE complexes
Central α-helical domain: The spine that interacts with SNARE bundle
C-terminal domain: Membrane attachment via hydrophobic interactions
Normal Function
Complexin-2 regulates neurotransmitter release:
SNARE Binding: Binds to assembled SNARE complexes
Release Modulation: Facilitates both spontaneous and evoked release
Fusion Clamp: Prevents premature fusion while vesicles are docked
The study of Complexin 2 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.
Disease Associations
Complexin-2 has been implicated in several neurological conditions:
Alzheimer's Disease: CPLX2 levels are reduced in AD brains, correlating with cognitive decline. The protein plays a protective role against amyloid-beta-induced synaptic toxicity[@mcmahon1995].
Parkinson's Disease: Altered complexin-2 function affects dopaminergic synaptic vesicle release, contributing to motor deficits[@giraud1998].
Schizophrenia: CPLX2 expression is downregulated in schizophrenic brains, affecting inhibitory synapse function[@rosenmund2003].