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vav guanine nucleotide exchange factor 1
- Molecular classification
- Guanine nucleotide exchange factor (GEF), Signal Transducer
01
Overview
VAV1 is a guanine nucleotide exchange factor (GEF) primarily expressed in hematopoietic cells. It plays a crucial role in T-cell and B-cell development, activation, and function by transducing antigen receptor signals. VAV1 activates Rho/Rac GTPases, leading to cell differentiation and proliferation. Its dysregulation is implicated in cancer and autoimmune diseases, making it a potential therapeutic target.
- Other names
- Proto-oncogene vav
02
Mechanism of action
VAV1 acts as a guanine nucleotide exchange factor (GEF) for Rho family GTPases, activating them and promoting downstream signaling cascades. It also functions as a scaffold protein, organizing multi-protein complexes at signaling sites.
03
Biological functions
Signal transductionCell differentiationCell proliferationImmune responseActin polymerizationGTPase activation
04
Disease associations
CancerAutoimmune diseasesInflammatory diseasesHIV infection
05
Safety considerations
Potential for off-target effects in hematopoietic cellsRisk of immune suppression or dysregulation
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