Biological Assembly 1  

 3D View: Structure | Electron Density | Validation Report | Ligand Interaction

Global Symmetry: Asymmetric - C1 
Global Stoichiometry: Monomer - A1 

Biological assembly 1 assigned by authors and generated by PISA (software)

Macromolecule Content

• Total Structure Weight: 23.25 kDa 
• Atom Count: 1631 
• Modelled Residue Count: 191 
• Deposited Residue Count: 210 
• Unique protein chains: 1

5OF2

The structural versatility of TasA in B. subtilis biofilm formation

• DOI: 10.2210/pdb5OF2/pdb

• Classification: PROTEIN FIBRIL
• Organism(s): Bacillus subtilis subsp. subtilis str. 168
• Expression System: Escherichia coli
• Mutation(s): No 


• Deposited: 2017-07-10 Released: 2018-03-21 
• Deposition Author(s): Roske, Y., Diehl, A., Ball, L., Chowdhury, A., Hiller, M., Moliere, N., Kramer, R., Nagaraj, M., Stoeppler, D., Worth, C.L., Schlegel, B., Leidert, M., Cremer, N., Eisenmenger, F., Lopez, D., Schmieder, P., Heinemann, U., Turgay, K., Akbey, U., Oschkinat, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 1.86 Å
• R-Value Free: 0.212 
• R-Value Work: 0.173 
• R-Value Observed: 0.175 

Literature

Structural changes of TasA in biofilm formation ofBacillus subtilis.

Diehl, A., Roske, Y., Ball, L., Chowdhury, A., Hiller, M., Moliere, N., Kramer, R., Stoppler, D., Worth, C.L., Schlegel, B., Leidert, M., Cremer, N., Erdmann, N., Lopez, D., Stephanowitz, H., Krause, E., van Rossum, B.J., Schmieder, P., Heinemann, U., Turgay, K., Akbey, U., Oschkinat, H.

(2018) Proc Natl Acad Sci U S A 115: 3237-3242

• PubMed: 29531041 
• DOI: 10.1073/pnas.1718102115
• Primary Citation of Related Structures:  
  5OF1, 5OF2


• PubMed Abstract: 
  

Microorganisms form surface-attached communities, termed biofilms, which can serve as protection against host immune reactions or antibiotics. Bacillus subtilis biofilms contain TasA as major proteinaceous component in addition to exopolysaccharides. In stark contrast to the initially unfolded biofilm proteins of other bacteria, TasA is a soluble, stably folded monomer, whose structure we have determined by X-ray crystallography. Subsequently, we characterized in vitro different oligomeric forms of TasA by NMR, EM, X-ray diffraction, and analytical ultracentrifugation (AUC) experiments. However, by magic-angle spinning (MAS) NMR on live biofilms, a swift structural change toward only one of these forms, consisting of homogeneous and protease-resistant, β-sheet-rich fibrils, was observed in vivo. Thereby, we characterize a structural change from a globular state to a fibrillar form in a functional prokaryotic system on the molecular level.

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Organizational Affiliation: 

Institut für Chemie und Biochemie, Freie Universität Berlin, 14195 Berlin, Germany.

Macromolecules

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details	Image
Spore coat-associated protein N	A	210	Bacillus subtilis subsp. subtilis str. 168	Mutation(s): 0  Gene Names: tasA, cotN, yqhF, BSU24620
UniProt
Find proteins for P54507 (Bacillus subtilis (strain 168)) Explore P54507  Go to UniProtKB:  P54507

Small Molecules

Ligands 2 Unique
ID	Chains	Name / Formula / InChI Key	2D Diagram
SO4	E [auth A]	SULFATE ION O4 S QAOWNCQODCNURD-UHFFFAOYSA-L
EDO	B [auth A], C [auth A], D [auth A]	1,2-ETHANEDIOL C2 H6 O2 LYCAIKOWRPUZTN-UHFFFAOYSA-N

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 1.86 Å
• R-Value Free: 0.212 
• R-Value Work: 0.173 
• R-Value Observed: 0.175 
• Space Group: P 1 2₁ 1

Unit Cell:

Length ( Å )	Angle ( ˚ )
a = 41.658	α = 90
b = 43.039	β = 90.17
c = 51.693	γ = 90

Software Package:

Software Name	Purpose
PHENIX	refinement
XDS	data reduction
XDS	data scaling
PHASER	phasing

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2017-07-10 
• Released Date: 2018-03-21 
Deposition Author(s): Roske, Y., Diehl, A., Ball, L., Chowdhury, A., Hiller, M., Moliere, N., Kramer, R., Nagaraj, M., Stoeppler, D., Worth, C.L., Schlegel, B., Leidert, M., Cremer, N., Eisenmenger, F., Lopez, D., Schmieder, P., Heinemann, U., Turgay, K., Akbey, U., Oschkinat, H.

Revision History  

• Version 1.0: 2018-03-21
  Type: Initial release
  
• Version 1.1: 2018-03-28
  Changes: Data collection, Database references
• Version 1.2: 2018-04-11
  Changes: Data collection, Database references, Derived calculations, Structure summary