The peroxisome biogenesis factors Pex3 and Pex19: multitasking proteins with disputed functions
نویسندگان
چکیده
منابع مشابه
Pex3 peroxisome biogenesis proteins function in peroxisome inheritance as class V myosin receptors
In Saccharomyces cerevisiae, peroxisomal inheritance from mother cell to bud is conducted by the class V myosin motor, Myo2p. However, homologues of S. cerevisiae Myo2p peroxisomal receptor, Inp2p, are not readily identifiable outside the Saccharomycetaceae family. Here, we demonstrate an unexpected role for Pex3 proteins in peroxisome inheritance. Both Pex3p and Pex3Bp are peroxisomal integral...
متن کاملPEX3 functions as a PEX19 docking factor in the import of class I peroxisomal membrane proteins
PEX19 is a chaperone and import receptor for newly synthesized, class I peroxisomal membrane proteins (PMPs). PEX19 binds these PMPs in the cytoplasm and delivers them to the peroxisome for subsequent insertion into the peroxisome membrane, indicating that there may be a PEX19 docking factor in the peroxisome membrane. Here we show that PEX3 is required for PEX19 to dock at peroxisomes, interac...
متن کاملThe interaction between human PEX3 and PEX19 characterized by fluorescence resonance energy transfer (FRET) analysis.
The process of peroxisome biogenesis involves several PEX genes that encode the machinery required to assemble the organelle. Among the corresponding peroxins the interaction between PEX3 and PEX19 is essential for early peroxisome biogenesis. However, the intracellular site of this protein interaction is still unclear. To address this question by fluorescence resonance energy transfer (FRET) a...
متن کاملAssociation between the Intrinsically Disordered Protein PEX19 and PEX3
In peroxisomes, peroxins (PEXs) 3 and 19 are the principal protein components of the machinery required for early peroxisomal biogenesis. For further insight into the interaction of PEX3 and PEX19, we used hydrogen exchange mass spectrometry to monitor conformational changes during complex formation between PEX3 and PEX19 in vitro. Our data showed that PEX19 remained highly flexible during inte...
متن کاملNew insights into the distribution, protein abundance and subcellular localisation of the endogenous peroxisomal biogenesis proteins PEX3 and PEX19 in different organs and cell types of the adult mouse
Peroxisomes are ubiquitous organelles mainly involved in ROS and lipid metabolism. Their abundance, protein composition and metabolic function vary depending on the cell type and adjust to different intracellular and environmental factors such as oxidative stress or nutrition. The biogenesis and proliferation of these important organelles are regulated by proteins belonging to the peroxin (PEX)...
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ژورنال
عنوان ژورنال: FEBS Letters
سال: 2019
ISSN: 0014-5793,1873-3468
DOI: 10.1002/1873-3468.13340