5NXS

Crystal Structure of Human Pro-myostatin Precursor at 4.2 A Resolution with Experimental Phases from SeMet labelling


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.19 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.274 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of the human myostatin precursor and determinants of growth factor latency.

Cotton, T.R.Fischer, G.Wang, X.McCoy, J.C.Czepnik, M.Thompson, T.B.Hyvonen, M.

(2018) EMBO J. 37: 367-383

  • DOI: 10.15252/embj.201797883
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Myostatin, a key regulator of muscle mass in vertebrates, is biosynthesised as a latent precursor in muscle and is activated by sequential proteolysis of the pro-domain. To investigate the molecular mechanism by which pro-myostatin remains latent, we ...

    Myostatin, a key regulator of muscle mass in vertebrates, is biosynthesised as a latent precursor in muscle and is activated by sequential proteolysis of the pro-domain. To investigate the molecular mechanism by which pro-myostatin remains latent, we have determined the structure of unprocessed pro-myostatin and analysed the properties of the protein in its different forms. Crystal structures and SAXS analyses show that pro-myostatin adopts an open, V-shaped structure with a domain-swapped arrangement. The pro-mature complex, after cleavage of the furin site, has significantly reduced activity compared with the mature growth factor and persists as a stable complex that is resistant to the natural antagonist follistatin. The latency appears to be conferred by a number of distinct features that collectively stabilise the interaction of the pro-domains with the mature growth factor, enabling a regulated stepwise activation process, distinct from the prototypical pro-TGF-β1. These results provide a basis for understanding the effect of missense mutations in pro-myostatin and pave the way for the design of novel myostatin inhibitors.


    Organizational Affiliation

    Department of Biochemistry, University of Cambridge, Cambridge, UK.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Growth/differentiation factor 8
A, B
335Homo sapiensMutation(s): 0 
Gene Names: MSTN (GDF8)
Find proteins for O14793 (Homo sapiens)
Go to Gene View: MSTN
Go to UniProtKB:  O14793
Small Molecules
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
MSE
Query on MSE
A, B
L-PEPTIDE LINKINGC5 H11 N O2 SeMET
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 4.19 Å
  • R-Value Free: 0.301 
  • R-Value Work: 0.274 
  • Space Group: I 2 3
Unit Cell:
Length (Å)Angle (°)
a = 196.830α = 90.00
b = 196.830β = 90.00
c = 196.830γ = 90.00
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
Aimlessdata scaling
XDSdata reduction
BUSTERrefinement
AutoSolphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2018-01-17
    Type: Initial release
  • Version 1.1: 2018-01-24
    Type: Database references
  • Version 1.2: 2018-02-21
    Type: Database references