6MDR

Cryo-EM structure of the Ceru+32/GFP-17 protomer


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.47 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Supercharging enables organized assembly of synthetic biomolecules.

Simon, A.J.Zhou, Y.Ramasubramani, V.Glaser, J.Pothukuchy, A.Gollihar, J.Gerberich, J.C.Leggere, J.C.Morrow, B.R.Jung, C.Glotzer, S.C.Taylor, D.W.Ellington, A.D.

(2019) Nat Chem 11: 204-212

  • DOI: 10.1038/s41557-018-0196-3

  • PubMed Abstract: 
  • Symmetrical protein oligomers are ubiquitous in biological systems and perform key structural and regulatory functions. However, there are few methods for constructing such oligomers. Here we have engineered completely synthetic, symmetrical oligomer ...

    Symmetrical protein oligomers are ubiquitous in biological systems and perform key structural and regulatory functions. However, there are few methods for constructing such oligomers. Here we have engineered completely synthetic, symmetrical oligomers by combining pairs of oppositely supercharged variants of a normally monomeric model protein through a strategy we term 'supercharged protein assembly' (SuPrA). We show that supercharged variants of green fluorescent protein can assemble into a variety of architectures including a well-defined symmetrical 16-mer structure that we solved using cryo-electron microscopy at 3.47 Å resolution. The 16-mer is composed of two stacked rings of octamers, in which the octamers contain supercharged proteins of alternating charges, and interactions within and between the rings are mediated by a variety of specific electrostatic contacts. The ready assembly of this structure suggests that combining oppositely supercharged pairs of protein variants may provide broad opportunities for generating novel architectures via otherwise unprogrammed interactions.


    Organizational Affiliation

    Center for Systems and Synthetic Biology, University of Texas at Austin, Austin, TX, USA. andy.ellington@mail.utexas.edu.,US Army Research Laboratory - South, Austin, TX, USA.,Biointerfaces Institute, University of Michigan, Ann Arbor, MI, USA.,Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX, USA. andy.ellington@mail.utexas.edu.,Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX, USA.,Department of Molecular Biosciences, University of Texas at Austin, Austin, TX, USA.,Department of Chemical Engineering, University of Michigan, Ann Arbor, MI, USA.,Department of Materials Science & Engineering, University of Michigan, Ann Arbor, MI, USA.,Institute for Cellular and Molecular Biology, University of Texas at Austin, Austin, TX, USA. dtaylor@utexas.edu.,Department of Molecular Biosciences, University of Texas at Austin, Austin, TX, USA. dtaylor@utexas.edu.,Center for Systems and Synthetic Biology, University of Texas at Austin, Austin, TX, USA.,Department of Molecular Biosciences, University of Texas at Austin, Austin, TX, USA. andy.ellington@mail.utexas.edu.,Division of Biotechnology, College of Life Sciences and Biotechnology, Korea University, Seoul, Republic of Korea.,Center for Systems and Synthetic Biology, University of Texas at Austin, Austin, TX, USA. dtaylor@utexas.edu.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Ceru+32
a, c, e, g, i, k, m, o
247N/AMutation(s): 39 
Protein Feature View is not available: No corresponding UniProt sequence found.
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
GFP-17
b, d, f, h, j, l, n, p
240Aequorea victoriaMutation(s): 22 
Gene Names: GFP
Find proteins for P42212 (Aequorea victoria)
Go to UniProtKB:  P42212
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.47 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Other governmentUnited StatesW911NF-1-51-0120

Revision History 

  • Version 1.0: 2019-01-23
    Type: Initial release
  • Version 1.1: 2019-01-30
    Type: Data collection, Database references
  • Version 1.2: 2019-03-06
    Type: Data collection, Database references
  • Version 1.3: 2019-04-17
    Type: Author supporting evidence, Data collection