Alexa Fluor® 488 Anti-EEA1 antibody [EPR4245] - Early Endosome Marker

Supplementary info

This supplementary information is collated from multiple sources and compiled automatically.

Activity summary

EEA1 (Early Endosome Antigen 1) is an important protein involved in endosomal trafficking with a molecular weight of approximately 162 kDa. It is a cytoplasmic protein expressed in various cell types acting mainly as an endosome marker. This protein contains a FYVE domain which facilitates binding to phosphatidylinositol 3-phosphate on endosomal membranes. EEA1 also interacts with Rab5 a small GTPase contributing to the fusion of early endosomes.

Biological function summary

EEA1 plays a significant role in early endosomal pathways facilitating endocytic vesicle fusion. EEA1 does not usually work alone; it functions as part of a larger complex involving other endosomal proteins. This protein acts as a tethering molecule which stabilizes the interaction of vesicles with endosomes. By anchoring vesicles EEA1 ensures the correct delivery and sorting of cargo within the cell which is important for cellular homeostasis and signaling.

Pathways

EEA1 contributes to the endocytic pathway and receptor recycling. It ensures proper functioning of the endocytic recycling of receptors such as the epidermal growth factor receptor (EGFR). EEA1-mediated tethering is vital for these pathways and it works closely with proteins like Rab5 which regulate endocytic trafficking. Through these interactions EEA1 affects cellular processes by controlling the flow of signaling receptors and other molecules within the cell.

Associated diseases and disorders

EEA1 dysfunction is linked to neurodegenerative diseases and cancer. Abnormalities in its expression or function can disrupt endosomal trafficking leading to cellular stress and disease. For example in Alzheimer's disease impaired endosomal function involving EEA1 can contribute to amyloid-beta accumulation. In cancer altered EEA1 activity may contribute to aberrant receptor signaling which can promote unchecked cell division. The interplay with proteins like EGFR demonstrates EEA1's importance in maintaining cellular health and response mechanisms.