6AS9

Filamentous Assembly of Green Fluorescent Protein Supported by a C-terminal fusion of 18-residues, viewed in space group P212121 form 2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.156 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Atomic insights into the genesis of cellular filaments by globular proteins.

McPartland, L.Heller, D.M.Eisenberg, D.S.Hochschild, A.Sawaya, M.R.

(2018) Nat. Struct. Mol. Biol. 25: 705-714

  • DOI: 10.1038/s41594-018-0096-7

  • PubMed Abstract: 
  • Self-assembly of proteins into filaments, such as actin and tubulin filaments, underlies essential cellular processes in all three domains of life. The early emergence of filaments in evolutionary history suggests that filament genesis might be a rob ...

    Self-assembly of proteins into filaments, such as actin and tubulin filaments, underlies essential cellular processes in all three domains of life. The early emergence of filaments in evolutionary history suggests that filament genesis might be a robust process. Here we describe the fortuitous construction of GFP fusion proteins that self-assemble as fluorescent polar filaments in Escherichia coli. Filament formation is achieved by appending as few as 12 residues to GFP. Crystal structures reveal that each protomer donates an appendage to fill a groove between the two following protomers along the filament. This exchange of appendages resembles runaway domain swapping but is distinguished by higher efficiency because monomers cannot competitively bind their own appendages. Ample evidence for this 'runaway domain coupling' mechanism in nature suggests it could facilitate the evolutionary pathway from globular protein to polar filament, requiring a minimal extension of protein sequence and no substantial refolding.


    Organizational Affiliation

    Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA, USA. ann_hochschild@hms.harvard.edu.,Howard Hughes Medical Institute, University of California, Los Angeles, Los Angeles, CA, USA. sawaya@mbi.ucla.edu.,UCLA-DOE Institute for Genomics and Proteomics, University of California, Los Angeles, Los Angeles, CA, USA. sawaya@mbi.ucla.edu.,Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA, USA.,Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA. sawaya@mbi.ucla.edu.,Department of Biological Chemistry, University of California, Los Angeles, Los Angeles, CA, USA. sawaya@mbi.ucla.edu.,Department of Microbiology and Immunobiology, Harvard Medical School, Boston, MA, USA.,Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, USA.,Molecular Biology Institute, University of California, Los Angeles, Los Angeles, CA, USA. sawaya@mbi.ucla.edu.,Department of Chemistry and Biochemistry, University of California, Los Angeles, Los Angeles, CA, USA.,Howard Hughes Medical Institute, University of California, Los Angeles, Los Angeles, CA, USA.,UCLA-DOE Institute for Genomics and Proteomics, University of California, Los Angeles, Los Angeles, CA, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Green fluorescent protein
A
256Aequorea victoriaMutation(s): 0 
Gene Names: GFP
Find proteins for P42212 (Aequorea victoria)
Go to UniProtKB:  P42212
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
ACT
Query on ACT

Download SDF File 
Download CCD File 
A
ACETATE ION
C2 H3 O2
QTBSBXVTEAMEQO-UHFFFAOYSA-M
 Ligand Interaction
MPD
Query on MPD

Download SDF File 
Download CCD File 
A
(4S)-2-METHYL-2,4-PENTANEDIOL
C6 H14 O2
SVTBMSDMJJWYQN-YFKPBYRVSA-N
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
PIA
Query on PIA
A
L-PEPTIDE LINKINGC14 H15 N3 O4ALA,TYR,GLY
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.75 Å
  • R-Value Free: 0.183 
  • R-Value Work: 0.156 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 51.100α = 90.00
b = 54.520β = 90.00
c = 85.470γ = 90.00
Software Package:
Software NamePurpose
XSCALEdata scaling
Cootmodel building
BUSTERrefinement
XDSdata reduction
PHASERphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical InstituteUnited States1616265
National Institutes of Health/Office of the DirectorUnited StatesOD003806
National Institutes of Health/National Institute of General Medical SciencesUnited StatesGM115941

Revision History 

  • Version 1.0: 2018-05-30
    Type: Initial release
  • Version 1.1: 2018-12-12
    Type: Data collection, Database references