National Institutes of Health/National Cancer Institute (NIH/NCI)
R01 CA262188
United States
National Institutes of Health/National Cancer Institute (NIH/NCI)
R01 CA233800
United States
National Institutes of Health/National Cancer Institute (NIH/NCI)
5F31 CA281197
United States
Citation
Journal: Nat Commun / Year: 2025 Title: Structural basis of VCP-VCPIP1-p47 ternary complex in Golgi maintenance. Authors: Binita Shah / Moritz Hunkeler / Ariana Bratt / Hong Yue / Isabella Jaen Maisonet / Eric S Fischer / Sara J Buhrlage / Abstract: VCP/p97 regulates a wide range of cellular processes, including post-mitotic Golgi reassembly. In this context, VCP is assisted by p47, an adapter protein, and VCPIP1, a deubiquitylase (DUB). ...VCP/p97 regulates a wide range of cellular processes, including post-mitotic Golgi reassembly. In this context, VCP is assisted by p47, an adapter protein, and VCPIP1, a deubiquitylase (DUB). However, how they organize into a functional ternary complex to promote Golgi assembly remains unknown. Here, we use cryo-EM to characterize both VCP-VCPIP1 and VCP-VCPIP1-p47 complexes. We show that VCPIP1 engages VCP through two interfaces: one involving the N-domain of VCP and the UBX domain of VCPIP1, and the other involving the VCP D2 domains and a region of VCPIP1 we refer to as VCPID. The p47 UBX domain competitively binds to the VCP N-domain, while not affecting VCPID binding. We show that VCPID is critical for VCP-mediated enhancement of DUB activity and proper Golgi assembly. The ternary structure along with biochemical and cellular data provides new insights into the complex interplay of VCP with its co-factors.
Entire : Complex of valosin containing protein (VCP)/p97 and valosin conta...
Entire
Name: Complex of valosin containing protein (VCP)/p97 and valosin containing protein interacting protein 1 (VCPIP1)
Components
Complex: Complex of valosin containing protein (VCP)/p97 and valosin containing protein interacting protein 1 (VCPIP1)
Protein or peptide: Transitional endoplasmic reticulum ATPase
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Supramolecule #1: Complex of valosin containing protein (VCP)/p97 and valosin conta...
Supramolecule
Name: Complex of valosin containing protein (VCP)/p97 and valosin containing protein interacting protein 1 (VCPIP1) type: complex / ID: 1 / Parent: 0 / Macromolecule list: all Details: Full length valosin containing protein (VCP)/p97 (consensus)
Model: Quantifoil R1.2/1.3 / Material: COPPER / Mesh: 300 / Support film - Material: CARBON / Support film - topology: HOLEY / Pretreatment - Type: GLOW DISCHARGE / Pretreatment - Time: 60 sec. / Pretreatment - Atmosphere: AIR / Pretreatment - Pressure: 0.039 kPa
Vitrification
Cryogen name: ETHANE / Chamber humidity: 90 % / Chamber temperature: 283.15 K / Instrument: LEICA EM GP
Details
This sample was crosslinked with 400x molar excess of BS3 and plunged with 0.2 mM CHAPSO (final concentration).
-
Electron microscopy
Microscope
FEI TITAN KRIOS
Specialist optics
Energy filter - Slit width: 20 eV
Image recording
Film or detector model: GATAN K3 (6k x 4k) / Number grids imaged: 1 / Number real images: 11580 / Average exposure time: 2.83 sec. / Average electron dose: 53.69 e/Å2
Electron beam
Acceleration voltage: 300 kV / Electron source: FIELD EMISSION GUN
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