6E0M

Structure of Elizabethkingia meningoseptica CdnE cyclic dinucleotide synthase


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.52 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.140 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Bacterial cGAS-like enzymes synthesize diverse nucleotide signals.

Whiteley, A.T.Eaglesham, J.B.de Oliveira Mann, C.C.Morehouse, B.R.Lowey, B.Nieminen, E.A.Danilchanka, O.King, D.S.Lee, A.S.Y.Mekalanos, J.J.Kranzusch, P.J.

(2019) Nature 567: 194-199

  • DOI: 10.1038/s41586-019-0953-5
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Cyclic dinucleotides (CDNs) have central roles in bacterial homeostasis and virulence by acting as nucleotide second messengers. Bacterial CDNs also elicit immune responses during infection when they are detected by pattern-recognition receptors in a ...

    Cyclic dinucleotides (CDNs) have central roles in bacterial homeostasis and virulence by acting as nucleotide second messengers. Bacterial CDNs also elicit immune responses during infection when they are detected by pattern-recognition receptors in animal cells. Here we perform a systematic biochemical screen for bacterial signalling nucleotides and discover a large family of cGAS/DncV-like nucleotidyltransferases (CD-NTases) that use both purine and pyrimidine nucleotides to synthesize a diverse range of CDNs. A series of crystal structures establish CD-NTases as a structurally conserved family and reveal key contacts in the enzyme active-site lid that direct purine or pyrimidine selection. CD-NTase products are not restricted to CDNs and also include an unexpected class of cyclic trinucleotide compounds. Biochemical and cellular analyses of CD-NTase signalling nucleotides demonstrate that these cyclic di- and trinucleotides activate distinct host receptors and thus may modulate the interaction of both pathogens and commensal microbiota with their animal and plant hosts.


    Organizational Affiliation

    Department of Microbiology, Harvard Medical School, Boston, MA, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
cGAS/DncV-like nucleotidyltransferase in E. coli homolog
A
292N/AMutation(s): 0 
Protein Feature View is not available: No corresponding UniProt sequence found.
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
DPO
Query on DPO

Download SDF File 
Download CCD File 
A
DIPHOSPHATE
O7 P2
XPPKVPWEQAFLFU-UHFFFAOYSA-J
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.52 Å
  • R-Value Free: 0.176 
  • R-Value Work: 0.140 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 57.195α = 90.00
b = 58.231β = 90.00
c = 99.446γ = 90.00
Software Package:
Software NamePurpose
XDSdata reduction
PHENIXrefinement
Aimlessdata scaling
PHASERphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
National Institutes of Health/National Institute Of Allergy and Infectious DiseasesUnited StatesR01AI018045

Revision History 

  • Version 1.0: 2019-02-20
    Type: Initial release
  • Version 1.1: 2019-03-06
    Type: Data collection, Database references
  • Version 1.2: 2019-03-27
    Type: Data collection, Database references