Target intelligence / Profile preview

Botulinum Neurotoxin Type G (BoNT/G)

Target
BoNT/G
Molecular classification
Enzyme, Metalloprotease, Neurotoxin
01

Overview

Botulinum neurotoxin type G (BoNT/G) is a potent neurotoxin produced by *Clostridium botulinum*. It functions as a zinc-dependent metalloprotease that cleaves VAMP/synaptobrevin, a SNARE protein essential for acetylcholine release at neuromuscular junctions. This cleavage disrupts vesicle fusion, leading to flaccid paralysis. BoNT/G binds to neurons via Synaptotagmin I and gangliosides. While less frequently implicated in human botulism compared to other serotypes, its extreme toxicity makes it a significant potential biothreat.

02

Mechanism of action

Blocks acetylcholine release via cleavage of VAMP/synaptobrevin after specific binding/entry into motor neurons.

03

Biological functions

Neurotransmitter release inhibitionSynaptic transmission disruptionVAMP/synaptobrevin cleavageParalysis induction
04

Disease associations

BotulismNeuroparalytic diseasePotential bioterrorism agent
05

Safety considerations

Extreme toxicityPotential for misuse as a bioweaponRisk of flaccid paralysisLimited clinical data compared to other BoNT serotypes

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