5MK3

Crystal structure of the His Domain Protein Tyrosine Phosphatase (HD-PTP/PTPN23) Bro 1 domain (CHMP4C peptide complex structure)

  • Classification: HYDROLASE
  • Organism(s): Homo sapiens
  • Expression System: Escherichia coli
  • Mutation(s): No 

  • Deposited: 2016-12-02 Released: 2017-08-16 
  • Deposition Author(s): Levy, C.
  • Funding Organization(s): Medical Research Council (United Kingdom), Biotechnology and Biological Sciences Research Council

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.198 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Structural Basis for Specific Interaction of TGF beta Signaling Regulators SARA/Endofin with HD-PTP.

Gahloth, D.Levy, C.Walker, L.Wunderley, L.Mould, A.P.Taylor, S.Woodman, P.Tabernero, L.

(2017) Structure 25: 1011-1024.e4

  • DOI: 10.1016/j.str.2017.05.005
  • Primary Citation of Related Structures:  
    5MK0, 5MK2, 5MK1, 5MJZ, 5MK3, 5MJY

  • PubMed Abstract: 
  • SARA and endofin are endosomal adaptor proteins that drive Smad phosphorylation by ligand-activated transforming growth factor β/bone morphogenetic protein (TGFβ/BMP) receptors. We show in this study that SARA and endofin also recruit the tumor supre ...

    SARA and endofin are endosomal adaptor proteins that drive Smad phosphorylation by ligand-activated transforming growth factor β/bone morphogenetic protein (TGFβ/BMP) receptors. We show in this study that SARA and endofin also recruit the tumor supressor HD-PTP, a master regulator of endosomal sorting and ESCRT-dependent receptor downregulation. High-affinity interactions occur between the SARA/endofin N termini, and the conserved hydrophobic region in the HD-PTP Bro1 domain that binds CHMP4/ESCRT-III. CHMP4 engagement is a universal feature of Bro1 proteins, but SARA/endofin binding is specific to HD-PTP. Crystallographic structures of HD-PTP Bro1 in complex with SARA, endofin, and three CHMP4 isoforms revealed that all ligands bind similarly to the conserved site but, critically, only SARA/endofin interact at a neighboring pocket unique to HD-PTP. The structures, together with mutagenesis and binding analysis, explain the high affinity and specific binding of SARA/endofin, and why they compete so effectively with CHMP4. Our data invoke models for how endocytic regulation of TGFβ/BMP signaling is controlled.


    Organizational Affiliation

    School of Biological Sciences, Faculty of Biology Medicine and Health, University of Manchester, Manchester Academic Health Science Centre, Manchester M13 9PT, UK. Electronic address: lydia.tabernero@manchester.ac.uk.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Tyrosine-protein phosphatase non-receptor type 23ABCD361Homo sapiensMutation(s): 0 
Gene Names: PTPN23KIAA1471
EC: 3.1.3.48
Find proteins for Q9H3S7 (Homo sapiens)
Explore Q9H3S7 
Go to UniProtKB:  Q9H3S7
NIH Common Fund Data Resources
PHAROS  Q9H3S7
Protein Feature View
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  • Reference Sequence
  • Find similar proteins by:  Sequence   |   Structure
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetailsImage
Charged multivesicular body protein 4cEFGH18Homo sapiensMutation(s): 0 
Gene Names: CHMP4CSHAX3
Find proteins for Q96CF2 (Homo sapiens)
Explore Q96CF2 
Go to UniProtKB:  Q96CF2
NIH Common Fund Data Resources
PHAROS  Q96CF2
Protein Feature View
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  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.00 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.198 
  • R-Value Observed: 0.198 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 66.436α = 90.54
b = 70.835β = 98.22
c = 79.291γ = 106.82
Software Package:
Software NamePurpose
PHENIXrefinement
xia2data reduction
xia2data scaling
PHASERphasing

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data

  • Deposited Date: 2016-12-02 
  • Released Date: 2017-08-16 
  • Deposition Author(s): Levy, C.

Funding OrganizationLocationGrant Number
Medical Research Council (United Kingdom)United KingdomG0701140
Medical Research Council (United Kingdom)United KingdomMR/K011049/1
Biotechnology and Biological Sciences Research CouncilUnited KingdomBB/K008773/1

Revision History 

  • Version 1.0: 2017-08-16
    Type: Initial release
  • Version 1.1: 2017-12-06
    Changes: Database references