Phosphoglycerate kinase 1 acts as a cargo adaptor to promote EGFR transport to the lysosome

Shao-Ling Chu, Jia-Rong Huang, Yu-Tzu Chang, Shu-Yun Yao, Jia-Shu Yang, Victor W. Hsu () and Jia-Wei Hsu ()
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Shao-Ling Chu: National Taiwan University
Jia-Rong Huang: National Taiwan University
Yu-Tzu Chang: National Taiwan University
Shu-Yun Yao: National Taiwan University
Jia-Shu Yang: Harvard Medical School
Victor W. Hsu: Harvard Medical School
Jia-Wei Hsu: National Taiwan University

Nature Communications, 2024, vol. 15, issue 1, 1-13

Abstract: Abstract The epidermal growth factor receptor (EGFR) plays important roles in multiple cellular events, including growth, differentiation, and motility. A major mechanism of downregulating EGFR function involves its endocytic transport to the lysosome. Sorting of proteins into intracellular pathways involves cargo adaptors recognizing sorting signals on cargo proteins. A dileucine-based sorting signal has been identified previously for the sorting of endosomal EGFR to the lysosome, but a cargo adaptor that recognizes this signal remains unknown. Here, we find that phosphoglycerate kinase 1 (PGK1) is recruited to endosomal membrane upon its phosphorylation, where it binds to the dileucine sorting signal in EGFR to promote the lysosomal transport of this receptor. We also elucidate two mechanisms that act in concert to promote PGK1 recruitment to endosomal membrane, a lipid-based mechanism that involves phosphatidylinositol 4,5-bisphosphate [PI(4,5)P2] and a protein-based mechanism that involves hepatocyte growth factor receptor substrate (Hrs). These findings reveal an unexpected function for a metabolic enzyme and advance the mechanistic understanding of how EGFR is transported to the lysosome.

Date: 2024
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DOI: 10.1038/s41467-024-45443-4

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