8GH9

Cryo-EM structure of hSlo1 in total membrane vesicles


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 

wwPDB Validation   3D Report Full Report


This is version 1.1 of the entry. See complete history


Literature

Membrane protein isolation and structure determination in cell-derived membrane vesicles.

Tao, X.Zhao, C.MacKinnon, R.

(2023) Proc Natl Acad Sci U S A 120: e2302325120-e2302325120

  • DOI: https://doi.org/10.1073/pnas.2302325120
  • Primary Citation of Related Structures:  
    8GH9, 8GHF, 8GHG

  • PubMed Abstract: 

    Integral membrane protein structure determination traditionally requires extraction from cell membranes using detergents or polymers. Here, we describe the isolation and structure determination of proteins in membrane vesicles derived directly from cells. Structures of the ion channel Slo1 from total cell membranes and from cell plasma membranes were determined at 3.8 Å and 2.7 Å resolution, respectively. The plasma membrane environment stabilizes Slo1, revealing an alteration of global helical packing, polar lipid, and cholesterol interactions that stabilize previously unresolved regions of the channel and an additional ion binding site in the Ca 2+ regulatory domain. The two methods presented enable structural analysis of both internal and plasma membrane proteins without disrupting weakly interacting proteins, lipids, and cofactors that are essential to biological function.


  • Organizational Affiliation

    Laboratory of Molecular Neurobiology and Biophysics, The Rockefeller University, New York, NY 10065.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Calcium-activated potassium channel subunit alpha-1A,
B [auth C],
C [auth B],
D
1,072Homo sapiensMutation(s): 0 
Gene Names: KCNMA1KCNMASLO
Membrane Entity: Yes 
UniProt & NIH Common Fund Data Resources
Find proteins for Q12791 (Homo sapiens)
Explore Q12791 
Go to UniProtKB:  Q12791
PHAROS:  Q12791
GTEx:  ENSG00000156113 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ12791
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 3.80 Å
  • Aggregation State: PARTICLE 
  • Reconstruction Method: SINGLE PARTICLE 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONcryoSPARC

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
Howard Hughes Medical Institute (HHMI)United States--
Jane Coffin Childs (JCC) FundUnited States--

Revision History  (Full details and data files)

  • Version 1.0: 2023-05-10
    Type: Initial release
  • Version 1.1: 2024-06-19
    Changes: Data collection