8QOX

Two-component assembly of SlaA and SlaB S-layer proteins of Sulfolobus acidocaldarius


Experimental Data Snapshot

  • Method: ELECTRON MICROSCOPY
  • Resolution: 11.2 Å
  • Aggregation State: 3D ARRAY 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 

Starting Models: experimental, in silico
View more details

wwPDB Validation   3D Report Full Report


This is version 1.0 of the entry. See complete history


Literature

Structure of the two-component S-layer of the archaeon Sulfolobus acidocaldarius.

Gambelli, L.McLaren, M.Conners, R.Sanders, K.Gaines, M.C.Clark, L.Gold, V.A.M.Kattnig, D.Sikora, M.Hanus, C.Isupov, M.N.Daum, B.

(2024) Elife 13

  • DOI: https://doi.org/10.7554/eLife.84617
  • Primary Citation of Related Structures:  
    7ZCX, 8AN2, 8AN3, 8QOX, 8QP0

  • PubMed Abstract: 

    Surface layers (S-layers) are resilient two-dimensional protein lattices that encapsulate many bacteria and most archaea. In archaea, S-layers usually form the only structural component of the cell wall and thus act as the final frontier between the cell and its environment. Therefore, S-layers are crucial for supporting microbial life. Notwithstanding their importance, little is known about archaeal S-layers at the atomic level. Here, we combined single-particle cryo electron microscopy, cryo electron tomography, and Alphafold2 predictions to generate an atomic model of the two-component S-layer of Sulfolobus acidocaldarius . The outer component of this S-layer (SlaA) is a flexible, highly glycosylated, and stable protein. Together with the inner and membrane-bound component (SlaB), they assemble into a porous and interwoven lattice. We hypothesise that jackknife-like conformational changes in SlaA play important roles in S-layer assembly.


  • Organizational Affiliation

    Living Systems Institute, University of Exeter, Exeter, United Kingdom.


Macromolecules
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
S-layer protein AA,
D [auth V],
E [auth W],
G [auth Z]
1,424Sulfolobus acidocaldarius DSM 639Mutation(s): 0 
UniProt
Find proteins for Q4J6E5 (Sulfolobus acidocaldarius (strain ATCC 33909 / DSM 639 / JCM 8929 / NBRC 15157 / NCIMB 11770))
Explore Q4J6E5 
Go to UniProtKB:  Q4J6E5
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4J6E5
Sequence Annotations
Expand
  • Reference Sequence
Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 2
MoleculeChains Sequence LengthOrganismDetailsImage
Conserved membrane proteinB,
C,
F [auth X]
475Sulfolobus acidocaldarius DSM 639Mutation(s): 0 
UniProt
Find proteins for Q4J6E6 (Sulfolobus acidocaldarius (strain ATCC 33909 / DSM 639 / JCM 8929 / NBRC 15157 / NCIMB 11770))
Explore Q4J6E6 
Go to UniProtKB:  Q4J6E6
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupQ4J6E6
Sequence Annotations
Expand
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Method: ELECTRON MICROSCOPY
  • Resolution: 11.2 Å
  • Aggregation State: 3D ARRAY 
  • Reconstruction Method: SUBTOMOGRAM AVERAGING 
EM Software:
TaskSoftware PackageVersion
RECONSTRUCTIONWarp1.0.9
MODEL REFINEMENTPHENIX1.16_3549:

Structure Validation

View Full Validation Report



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
European Research Council (ERC)European Union803894

Revision History  (Full details and data files)

  • Version 1.0: 2024-02-21
    Type: Initial release