Crystal structure of the cytosolic domain of human MiD51

Experimental Data Snapshot

  • Resolution: 2.70 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.226 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


New interfaces on MiD51 for Drp1 recruitment and regulation.

Ma, J.Zhai, Y.Chen, M.Zhang, K.Chen, Q.Pang, X.Sun, F.

(2019) PLoS One 14: e0211459-e0211459

  • DOI: https://doi.org/10.1371/journal.pone.0211459
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Mitochondrial fission is facilitated by dynamin-related protein Drp1 and a variety of its receptors. However, the molecular mechanism of how Drp1 is recruited to the mitochondrial surface by receptors MiD49 and MiD51 remains elusive. Here, we showed that the interaction between Drp1 and MiD51 is regulated by GTP binding and depends on the polymerization of Drp1. We identified two regions on MiD51 that directly bind to Drp1, and found that dimerization of MiD51, relevant to residue C452, is required for mitochondrial dynamics regulation. Our Results have suggested a multi-faceted regulatory mechanism for the interaction between Drp1 and MiD51 that illustrates the potentially complicated and tight regulation of mitochondrial fission.

  • Organizational Affiliation

    National Laboratory of Biomacromolecules, CAS Center for Excellence in Biomacromolecules, Institute of Biophysics, Chinese Academy of Sciences, Beijing, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Mitochondrial dynamics protein MID51336Homo sapiensMutation(s): 0 
Gene Names: MID51
UniProt & NIH Common Fund Data Resources
Find proteins for Q9NQG6 (Homo sapiens)
Explore Q9NQG6 
Go to UniProtKB:  Q9NQG6
GTEx:  ENSG00000100335 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9NQG6
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.70 Å
  • R-Value Free: 0.298 
  • R-Value Work: 0.222 
  • R-Value Observed: 0.226 
  • Space Group: P 41 21 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 88.836α = 90
b = 88.836β = 90
c = 124.676γ = 90
Software Package:
Software NamePurpose
HKL-2000data reduction
HKL-2000data scaling

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
the Chinese Ministry of Science and TechnologyChina2014CB910700, 2011CB910301
the Chinese Academy of ScienceChinaXDB08030202

Revision History  (Full details and data files)

  • Version 1.0: 2018-04-25
    Type: Initial release
  • Version 1.1: 2019-05-15
    Changes: Data collection, Database references
  • Version 1.2: 2024-03-27
    Changes: Data collection, Database references