7ROY

The structure of the Fem1B:FNIP1 complex


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Structural basis and regulation of the reductive stress response.

Manford, A.G.Mena, E.L.Shih, K.Y.Gee, C.L.McMinimy, R.Martinez-Gonzalez, B.Sherriff, R.Lew, B.Zoltek, M.Rodriguez-Perez, F.Woldesenbet, M.Kuriyan, J.Rape, M.

(2021) Cell 184: 5375-5390.e16

  • DOI: 10.1016/j.cell.2021.09.002
  • Primary Citation of Related Structures:  
    7ROY

  • PubMed Abstract: 
  • Although oxidative phosphorylation is best known for producing ATP, it also yields reactive oxygen species (ROS) as invariant byproducts. Depletion of ROS below their physiological levels, a phenomenon known as reductive stress, impedes cellular signaling and has been linked to cancer, diabetes, and cardiomyopathy ...

    Although oxidative phosphorylation is best known for producing ATP, it also yields reactive oxygen species (ROS) as invariant byproducts. Depletion of ROS below their physiological levels, a phenomenon known as reductive stress, impedes cellular signaling and has been linked to cancer, diabetes, and cardiomyopathy. Cells alleviate reductive stress by ubiquitylating and degrading the mitochondrial gatekeeper FNIP1, yet it is unknown how the responsible E3 ligase CUL2 FEM1B can bind its target based on redox state and how this is adjusted to changing cellular environments. Here, we show that CUL2 FEM1B relies on zinc as a molecular glue to selectively recruit reduced FNIP1 during reductive stress. FNIP1 ubiquitylation is gated by pseudosubstrate inhibitors of the BEX family, which prevent premature FNIP1 degradation to protect cells from unwarranted ROS accumulation. FEM1B gain-of-function mutation and BEX deletion elicit similar developmental syndromes, showing that the zinc-dependent reductive stress response must be tightly regulated to maintain cellular and organismal homeostasis.


    Organizational Affiliation

    Department of Molecular and Cell Biology, University of California at Berkeley, Berkeley, CA 94720, USA; Howard Hughes Medical Institute, University of California at Berkeley, Berkeley, CA 94720, USA; California Institute for Quantitative Biosciences (QB3), University of California at Berkeley, Berkeley, CA 94720, USA. Electronic address: mrape@berkeley.edu.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Protein fem-1 homolog BA, B, C, D381Mus musculusMutation(s): 0 
Gene Names: Fem1bF1aaKiaa0396
UniProt
Find proteins for Q9Z2G0 (Mus musculus)
Explore Q9Z2G0 
Go to UniProtKB:  Q9Z2G0
Protein Feature View
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Folliculin-interacting protein 1E [auth G], F [auth H]31Mus musculusMutation(s): 0 
Gene Names: Fnip1Kiaa1961
UniProt
Find proteins for Q68FD7 (Mus musculus)
Explore Q68FD7 
Go to UniProtKB:  Q68FD7
Protein Feature View
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.90 Å
  • R-Value Free: 0.230 
  • R-Value Work: 0.206 
  • R-Value Observed: 0.207 
  • Space Group: I 4 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 164.475α = 90
b = 164.475β = 90
c = 465.39γ = 90
Software Package:
Software NamePurpose
PHENIXrefinement
XDSdata reduction
PDB_EXTRACTdata extraction
Aimlessdata scaling
CRANK2phasing

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--
American Cancer SocietyUnited StatesPF1521501DCC
National Science Foundation (NSF, United States)United States--

Revision History  (Full details and data files)

  • Version 1.0: 2021-10-13
    Type: Initial release
  • Version 1.1: 2021-10-20
    Changes: Database references
  • Version 1.2: 2021-10-27
    Changes: Database references