7NFU

Crystal structure of C-terminally truncated Geobacillus thermoleovorans nucleoid occlusion protein Noc

Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 

wwPDB Validation   3D Report Full Report


This is version 1.2 of the entry. See complete history. 


Literature

CTP regulates membrane-binding activity of the nucleoid occlusion protein Noc.

Jalal, A.S.B., Tran, N.T., Wu, L.J., Ramakrishnan, K., Rejzek, M., Gobbato, G., Stevenson, C.E.M., Lawson, D.M., Errington, J., Le, T.B.K.

(2021) Mol Cell 81: 3623-3636.e6

  • DOI: 10.1016/j.molcel.2021.06.025
  • Primary Citation of Related Structures:  
    7NFU, 7NG0

  • PubMed Abstract: 

    • ATP- and GTP-dependent molecular switches are extensively used to control functions of proteins in a wide range of biological processes. However, CTP switches are rarely reported. Here, we report that a nucleoid occlusion protein Noc is a CTPase enzyme whose membrane-binding activity is directly regulated by a CTP switch ...

    ATP- and GTP-dependent molecular switches are extensively used to control functions of proteins in a wide range of biological processes. However, CTP switches are rarely reported. Here, we report that a nucleoid occlusion protein Noc is a CTPase enzyme whose membrane-binding activity is directly regulated by a CTP switch. In Bacillus subtilis, Noc nucleates on 16 bp NBS sites before associating with neighboring non-specific DNA to form large membrane-associated nucleoprotein complexes to physically occlude assembly of the cell division machinery. By in vitro reconstitution, we show that (1) CTP is required for Noc to form the NBS-dependent nucleoprotein complex, and (2) CTP binding, but not hydrolysis, switches Noc to a membrane-active state. Overall, we suggest that CTP couples membrane-binding activity of Noc to nucleoprotein complex formation to ensure productive recruitment of DNA to the bacterial cell membrane for nucleoid occlusion activity.

    Organizational Affiliation: 

    Department of Molecular Microbiology, John Innes Centre, Norwich, NR4 7UH, UK. Electronic address: tung.le@jic.ac.uk.



Macromolecules
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(by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Nucleoid occlusion proteinA, B252Geobacillus thermoleovorans CCB_US3_UF5Mutation(s): 0 
Gene Names: noc, GTCCBUS3UF5_39100
UniProt
Find proteins for G8N1K9 (Geobacillus thermoleovorans CCB_US3_UF5)
Explore G8N1K9 
Go to UniProtKB:  G8N1K9
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4
Download Ideal Coordinates CCD File 
AA [auth B] , BA [auth B] , C [auth A] , CA [auth B] , D [auth A] , DA [auth B] , E [auth A] , F [auth A] , 
AA [auth B], BA [auth B], C [auth A], CA [auth B], D [auth A], DA [auth B], E [auth A], F [auth A], G [auth A], H [auth A], I [auth A], J [auth A], K [auth A], L [auth A], M [auth A], N [auth A], O [auth A], P [auth A], R [auth B], S [auth B], T [auth B], U [auth B], V [auth B], W [auth B], X [auth B], Y [auth B], Z [auth B]
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L		 Ligand Interaction
GOL
Query on GOL
Download Ideal Coordinates CCD File 
Q [auth A]GLYCEROL
C3 H8 O3
PEDCQBHIVMGVHV-UHFFFAOYSA-N		 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.209 
  • R-Value Observed: 0.211 
  • Space Group: P 21 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 146.79α = 90
b = 146.79β = 90
c = 146.79γ = 90
Software Package:
Software NamePurpose
Aimlessdata scaling
REFMACrefinement
PDB_EXTRACTdata extraction
DIALSdata reduction
CRANK2phasing

Structure Validation

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View more in-depth experimental data

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
Royal SocietyUnited KingdomURF-R-201020
Wellcome TrustUnited Kingdom209500
Royal SocietyUnited KingdomRG150448
Biotechnology and Biological Sciences Research Council (BBSRC)United KingdomBBS-E-J-000C0683

Revision History  (Full details and data files)

  • Version 1.0: 2021-02-17
    Type: Initial release
  • Version 1.1: 2021-07-28
    Changes: Database references
  • Version 1.2: 2021-09-15
    Changes: Database references