Biological Assembly 1  

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Global Symmetry: Cyclic - C2  (3D View)
Global Stoichiometry: Homo 2-mer - A2 

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

Macromolecule Content

• Total Structure Weight: 29848.46 
• Atom Count: 1376 
• Residue Count: 265 
• Unique protein chains: 1

4F9E

Cyclic di-GMP Sensing via the Innate Immune Signaling Protein STING

• DOI: 10.2210/pdb4F9E/pdb

• Classification: PROTEIN BINDING
• Organism(s): Homo sapiens
• Expression System: Escherichia coli BL21(DE3)


• Deposited: 2012-05-18 Released: 2012-07-25 
• Deposition Author(s): Kabaleeswaran, V., Wu, H.

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Experimental Data Snapshot

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.258 
• R-Value Work: 0.212 

Literature

Cyclic di-GMP Sensing via the Innate Immune Signaling Protein STING.

Yin, Q., Tian, Y., Kabaleeswaran, V., Jiang, X., Tu, D., Eck, M.J., Chen, Z.J., Wu, H.

(2012) Mol.Cell 46: 735-745

• PubMed: 22705373 
• DOI: 10.1016/j.molcel.2012.05.029
• Primary Citation of Related Structures:  
  4F9G


• PubMed Abstract: 
  

Detection of foreign materials is the first step of successful immune responses. Stimulator of interferon genes (STING) was shown to directly bind cyclic diguanylate monophosphate (c-di-GMP), a bacterial second messenger, and to elicit strong interferon responses. Here we elucidate the structural features of the cytosolic c-di-GMP binding domain (CBD) of STING and its complex with c-di-GMP. The CBD exhibits an α + β fold and is a dimer in the crystal and in solution. Surprisingly, one c-di-GMP molecule binds to the central crevice of a STING dimer, using a series of stacking and hydrogen bonding interactions. We show that STING is autoinhibited by an intramolecular interaction between the CBD and the C-terminal tail (CTT) and that c-di-GMP releases STING from this autoinhibition by displacing the CTT. The structures provide a remarkable example of pathogen-host interactions in which a unique microbial molecule directly engages the innate immune system.

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Organizational Affiliation: 

Department of Biochemistry, Weill Cornell Medical College, New York, NY 10065, USA. [e-mail]

Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
Molecule	Chains	Sequence Length	Organism	Details
Transmembrane protein 173	A	265	Homo sapiens	Mutation(s): 0  Gene Names: TMEM173 (ERIS, MITA, STING)
Find proteins for Q86WV6 (Homo sapiens) Go to Gene View: TMEM173 Go to UniProtKB:  Q86WV6

Experimental Data & Validation

Experimental Data

• Method: X-RAY DIFFRACTION
• Resolution: 2.75 Å
• R-Value Free: 0.258 
• R-Value Work: 0.212 
• Space Group: P 4₃ 2₁ 2

Unit Cell:

Length (Å)	Angle (°)
a = 61.400	α = 90.00
b = 61.400	β = 90.00
c = 118.310	γ = 90.00

Software Package:

Software Name	Purpose
PDB_EXTRACT	data extraction
PHENIX	refinement
SOLVE	phasing
RESOLVE	phasing
XDS	data reduction
SCALA	data scaling

Structure Validation

Entry History 

Deposition Data

• Deposited Date: 2012-05-18 
• Released Date: 2012-07-25 
• Deposition Author(s): Kabaleeswaran, V., Wu, H.

Revision History 

• Version 1.0: 2012-07-25
  Type: Initial release
• Version 1.1: 2014-01-01
  Type: Other