6TXB

Crystal structure of Mindy1 mutant (P138A) in complex with Lys48 linked di-ubiquitin


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.18 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.214 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history


Literature

Mechanism of activation and regulation of deubiquitinase activity in MINDY1 and MINDY2.

Abdul Rehman, S.A.Armstrong, L.A.Lange, S.M.Kristariyanto, Y.A.Grawert, T.W.Knebel, A.Svergun, D.I.Kulathu, Y.

(2021) Mol Cell 81: 4176-4190.e6

  • DOI: 10.1016/j.molcel.2021.08.024
  • Primary Citation of Related Structures:  
    6TUV, 6TXB, 6Y6R, 6YJG, 6Z49, 6Z7V, 6Z90, 7NPI

  • PubMed Abstract: 
  • Of the eight distinct polyubiquitin (polyUb) linkages that can be assembled, the roles of K48-linked polyUb (K48-polyUb) are the most established, with K48-polyUb modified proteins being targeted for degradation. MINDY1 and MINDY2 are members of the MINDY family of deubiquitinases (DUBs) that have exquisite specificity for cleaving K48-polyUb, yet we have a poor understanding of their catalytic mechanism ...

    Of the eight distinct polyubiquitin (polyUb) linkages that can be assembled, the roles of K48-linked polyUb (K48-polyUb) are the most established, with K48-polyUb modified proteins being targeted for degradation. MINDY1 and MINDY2 are members of the MINDY family of deubiquitinases (DUBs) that have exquisite specificity for cleaving K48-polyUb, yet we have a poor understanding of their catalytic mechanism. Here, we analyze the crystal structures of MINDY1 and MINDY2 alone and in complex with monoUb, di-, and penta-K48-polyUb, identifying 5 distinct Ub binding sites in the catalytic domain that explain how these DUBs sense both Ub chain length and linkage type to cleave K48-polyUb chains. The activity of MINDY1/2 is inhibited by the Cys-loop, and we find that substrate interaction relieves autoinhibition to activate these DUBs. We also find that MINDY1/2 use a non-canonical catalytic triad composed of Cys-His-Thr. Our findings highlight multiple layers of regulation modulating DUB activity in MINDY1 and MINDY2.


    Organizational Affiliation

    MRC Protein Phosphorylation & Ubiquitylation Unit, School of Life Sciences, University of Dundee, Dow Street, Dundee DD1 5EH, UK. Electronic address: ykulathu@dundee.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Ubiquitin carboxyl-terminal hydrolase MINDY-1A289Homo sapiensMutation(s): 2 
Gene Names: MINDY1FAM63AKIAA1390
EC: 3.4.19.12
UniProt & NIH Common Fund Data Resources
Find proteins for Q8N5J2 (Homo sapiens)
Explore Q8N5J2 
Go to UniProtKB:  Q8N5J2
PHAROS:  Q8N5J2
Protein Feature View
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  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Polyubiquitin-CB [auth D], C [auth H], D [auth L]76Homo sapiensMutation(s): 0 
Gene Names: UBC
UniProt & NIH Common Fund Data Resources
Find proteins for P0CG48 (Homo sapiens)
Explore P0CG48 
Go to UniProtKB:  P0CG48
PHAROS:  P0CG48
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.18 Å
  • R-Value Free: 0.246 
  • R-Value Work: 0.212 
  • R-Value Observed: 0.214 
  • Space Group: P 41 2 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.032α = 90
b = 74.032β = 90
c = 202.853γ = 90
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
Aimlessdata scaling
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report




Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Medical Research Council (MRC, United Kingdom)United KingdomMC_UU_12016/6
European Research Council (ERC)United Kingdom677623

Revision History  (Full details and data files)

  • Version 1.0: 2021-01-27
    Type: Initial release
  • Version 1.1: 2021-10-13
    Changes: Data collection, Database references
  • Version 1.2: 2021-11-03
    Changes: Data collection, Database references