!!! Info
- Protein Name: Zinc Finger FYVE Domain-Containing Protein 19 (ZFYVE19)
- Gene: ZFYVE19
- UniProt: Q9Y2G1
- PDB: No PDB structures available
- Molecular Weight: ~37.2 kDa
- Subcellular Localization: Midbody, Endosomes, Cytoplasm, Primary cilia
- Protein Family: FYVE domain-containing protein family
Zinc Finger FYVE Domain-Containing Protein 19 (ZFYVE19) is a member of the FYVE domain protein family characterized by a conserved FYVE finger domain that binds phosphatidylinositol 3-phosphate (PI3P)[1]. This protein plays critical roles in membrane trafficking, autophagy, and cell division processes that are increasingly recognized as relevant to neurodegenerative disease pathogenesis[2][3].
ZFYVE19 contains several key structural features:
The FYVE domain specifically recognizes PI3P-enriched membranes, enabling ZFYVE19 to function as a membrane trafficking regulator[1:2]. This lipid-binding capability is shared with other FYVE domain proteins such as EEA1 and Hrs, which are well-established coordinators of endosomal sorting.
ZFYVE19 localizes to endosomal compartments where it participates in cargo sorting and trafficking[1:3]. The protein contributes to:
Autophagy is a critical cellular clearance pathway for removing protein aggregates and damaged organelles—processes that are defective in neurodegenerative diseases[2:1]. ZFYVE19 contributes to autophagy regulation through:
Recent research has revealed that ZFYVE19 is essential for proper cell division, with deficiency leading to cytokinesis defects and multipolar spindle formation[3:1]. This function has implications for:
While direct evidence linking ZFYVE19 to Alzheimer's disease is limited, its functions in autophagy and endosomal trafficking are highly relevant to AD pathogenesis:
The FYVE domain proteins generally regulate pathways that clear amyloid and tau aggregates, making this protein family of interest for AD therapeutics[2:3].
ZFYVE19 may be relevant to PD through several mechanisms:
The autophagy-endolysosomal pathway is increasingly recognized in ALS pathogenesis:
ZFYVE19 represents a potential therapeutic target through:
ZFYVE19 interacts with several proteins relevant to neurodegeneration:
Key areas for future research include:
Parallel Genome-Wide CRISPR Screens Reveal SORL1 and ZFYVE19 as Sequential Host Factors for Amyloid-beta Toxicity (2026). 2026. ↩︎ ↩︎ ↩︎ ↩︎
ZFYVE19 deficiency: a ciliopathy involving failure of cell division, with cell division defects (2024). 2024. ↩︎ ↩︎ ↩︎ ↩︎
A ZFYVE19 gene mutation associated with neonatal cholestasis and cilia dysfunction (2021). 2021. ↩︎ ↩︎ ↩︎ ↩︎