ISDA

Entry Detail

PDB ID:

4EMT

Keywords:

MEMBRANE PROTEIN

Title:

Crystal Structure of human STING bound to c-di-GMP

Biological Source:

Source Organism:

Homo sapiens

Host Organism:

Escherichia coli

PDB Version:

Deposition Date:

2012-04-12

Release Date:

2012-06-13

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

1.50 Å

R-Value Free:

0.21

R-Value Work:

0.18

R-Value Observed:

0.18

Space Group:

C 2 2 21

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Macromolecular Entities

Protein Blast

Polymer Type:polypeptide(L)
Description:Transmembrane protein 173
Chain IDs:A, B
Chain Length:188
Number of Molecules:2
Biological Source:Homo sapiens

UniProt ID:Q86WV6 Pfam ID:PF15009

Modified Residue

Compound ID	Chain ID	Parent Comp ID	Details	2D Image
MSE	A	MET	SELENOMETHIONINE

Ligand Molecules

C2E

Primary Citation

Structure of STING bound to cyclic di-GMP reveals the mechanism of cyclic dinucleotide recognition by the immune system.

Shu, C, Yi, G, Watts, T, Kao, C.C, Li, P.Show

Nat.Struct.Mol.Biol. 19 722 724 (2012)

PMID: 22728658 DOI: 10.1038/nsmb.2331

Abstact

STING (stimulator of interferon genes) is an innate immune sensor of cyclic dinucleotides that regulates the induction of type I interferons. STING's C-terminal domain forms a V-shaped dimer and binds a cyclic diguanylate monophosphate (c-di-GMP) at the dimer interface by both direct and solvent-mediated hydrogen bonds. Guanines of c-di-GMP stack against the phenolic rings of a conserved tyrosine, and mutations at the c-di-GMP binding surface reduce nucleotide binding and affect signaling.

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Protein

Chemical

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Primary Citation of related structures