5VR2

mouse myocilin leucine zipper C-terminal 7 heptad repeat


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.922 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.187 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Structure and Misfolding of the Flexible Tripartite Coiled-Coil Domain of Glaucoma-Associated Myocilin.

Hill, S.E.Nguyen, E.Donegan, R.K.Patterson-Orazem, A.C.Hazel, A.Gumbart, J.C.Lieberman, R.L.

(2017) Structure 25: 1697-1707.e5

  • DOI: 10.1016/j.str.2017.09.008

  • PubMed Abstract: 
  • Glaucoma-associated myocilin is a member of the olfactomedins, a protein family involved in neuronal development and human diseases. Molecular studies of the myocilin N-terminal coiled coil demonstrate a unique tripartite architecture: a Y-shaped par ...

    Glaucoma-associated myocilin is a member of the olfactomedins, a protein family involved in neuronal development and human diseases. Molecular studies of the myocilin N-terminal coiled coil demonstrate a unique tripartite architecture: a Y-shaped parallel dimer-of-dimers with distinct tetramer and dimer regions. The structure of the dimeric C-terminal 7-heptad repeats elucidates an unexpected repeat pattern involving inter-strand stabilization by oppositely charged residues. Molecular dynamics simulations reveal an alternate accessible conformation in which the terminal inter-strand disulfide limits the extent of unfolding and results in a kinked configuration. By inference, full-length myocilin is also branched, with two pairs of C-terminal olfactomedin domains. Selected variants within the N-terminal region alter the apparent quaternary structure of myocilin but do so without compromising stability or causing aggregation. In addition to increasing our structural knowledge of naturally occurring extracellular coiled coils and biomedically important olfactomedins, this work broadens the scope of protein misfolding in the pathogenesis of myocilin-associated glaucoma.


    Organizational Affiliation

    School of Chemistry and Biochemistry, Georgia Institute of Technology, Atlanta, GA 30332, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Myocilin
A, B, C, D
50Mus musculusMutation(s): 0 
Gene Names: Myoc (Tigr)
Find proteins for O70624 (Mus musculus)
Go to UniProtKB:  O70624
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.922 Å
  • R-Value Free: 0.239 
  • R-Value Work: 0.187 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 85.129α = 90.00
b = 48.746β = 105.97
c = 55.798γ = 90.00
Software Package:
Software NamePurpose
HKL-3000data reduction
AMPLEphasing
SERGUIdata collection
SCALEPACKdata scaling
PDB_EXTRACTdata extraction
PHENIXrefinement
HKLdata reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2017-11-08
    Type: Initial release
  • Version 1.1: 2017-11-15
    Type: Database references