4A5X

Structures of MITD1

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 

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This is version 1.1 of the entry. See complete history. 


Literature

Escrt-III Binding Protein Mitd1 is Involved in Cytokinesis and Has an Unanticipated Pld Fold that Binds Membranes.

Hadders, M.A., Agromayor, M., Obita, T., Perisic, O., Caballe, A., Kloc, M., Lamers, M.H., Williams, R.L., Martin-Serrano, J.

(2012) Proc Natl Acad Sci U S A 109: 17424

  • DOI: 10.1073/pnas.1206839109
  • Primary Citation of Related Structures:  
    2YMB, 4A5X, 4A5Z

  • PubMed Abstract: 

    • The endosomal sorting complexes required for transport (ESCRT) proteins have a critical function in abscission, the final separation of the daughter cells during cytokinesis. Here, we describe the structure and function of a previously uncharacterized ESCRT-III interacting protein, MIT-domain containing protein 1 (MITD1) ...

    The endosomal sorting complexes required for transport (ESCRT) proteins have a critical function in abscission, the final separation of the daughter cells during cytokinesis. Here, we describe the structure and function of a previously uncharacterized ESCRT-III interacting protein, MIT-domain containing protein 1 (MITD1). Crystal structures of MITD1 reveal a dimer, with a microtubule-interacting and trafficking (MIT) domain at the N terminus and a unique, unanticipated phospholipase D-like (PLD) domain at the C terminus that binds membranes. We show that the MIT domain binds to a subset of ESCRT-III subunits and that this interaction mediates MITD1 recruitment to the midbody during cytokinesis. Depletion of MITD1 causes a distinct cytokinetic phenotype consistent with destabilization of the midbody and abscission failure. These results suggest a model whereby MITD1 coordinates the activity of ESCRT-III during abscission with earlier events in the final stages of cell division.

    Organizational Affiliation: 

    Laboratory of Molecular Biology, Medical Research Council, Cambridge CB2 0QH, United Kingdom.



Macromolecules
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Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
MIT DOMAIN-CONTAINING PROTEIN 1A, B86Homo sapiensMutation(s): 0 
Gene Names: MITD1
UniProt & NIH Common Fund Data Resources
Find proteins for Q8WV92 (Homo sapiens)
Explore Q8WV92 
Go to UniProtKB:  Q8WV92
PHAROS:  Q8WV92
GTEx:  ENSG00000158411 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ8WV92
Protein Feature View
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  • Reference Sequence

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Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
CHARGED MULTIVESICULAR BODY PROTEIN 1AC, D16Homo sapiensMutation(s): 0 
Gene Names: CHMP1A, CHMP1, KIAA0047, PCOLN3, PRSM1
UniProt & NIH Common Fund Data Resources
Find proteins for Q9HD42 (Homo sapiens)
Explore Q9HD42 
Go to UniProtKB:  Q9HD42
PHAROS:  Q9HD42
GTEx:  ENSG00000131165 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ9HD42
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
P15
Query on P15
Download Ideal Coordinates CCD File 
F [auth B]2,5,8,11,14,17-HEXAOXANONADECAN-19-OL
C13 H28 O7
FHHGCKHKTAJLOM-UHFFFAOYSA-N		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
E [auth A],
G [auth C]		GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.91 Å
  • R-Value Free: 0.227 
  • R-Value Work: 0.201 
  • R-Value Observed: 0.202 
  • Space Group: C 2 2 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 67.07α = 90
b = 74.16β = 90
c = 89.785γ = 90
Software Package:
Software NamePurpose
BUSTERrefinement
XDSdata reduction
SCALAdata scaling
PHASERphasing

Structure Validation

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Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-11-14
    Type: Initial release
  • Version 1.1: 2013-11-13
    Changes: Database references, Structure summary