5GMF

Crystal structure of monkey TLR7 in complex with guanosine and polyU


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 

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Ligand Structure Quality Assessment 


This is version 2.0 of the entry. See complete history


Literature

Structural Analysis Reveals that Toll-like Receptor 7 Is a Dual Receptor for Guanosine and Single-Stranded RNA

Zhang, Z.Ohto, U.Shibata, T.Krayukhina, E.Taoka, M.Yamauchi, Y.Tanji, H.Isobe, T.Uchiyama, S.Miyake, K.Shimizu, T.

(2016) Immunity 45: 737-748

  • DOI: 10.1016/j.immuni.2016.09.011
  • Primary Citation of Related Structures:  
    5GMF, 5GMG, 5GMH

  • PubMed Abstract: 
  • Toll-like receptor 7 (TLR7) is a single-stranded RNA (ssRNA) sensor in innate immunity and also responds to guanosine and chemical ligands, such as imidazoquinoline compounds. However, TLR7 activation mechanism by these ligands remain largely unknown. Here, we generated crystal structures of three TLR7 complexes, and found that all formed an activated m-shaped dimer with two ligand-binding sites ...

    Toll-like receptor 7 (TLR7) is a single-stranded RNA (ssRNA) sensor in innate immunity and also responds to guanosine and chemical ligands, such as imidazoquinoline compounds. However, TLR7 activation mechanism by these ligands remain largely unknown. Here, we generated crystal structures of three TLR7 complexes, and found that all formed an activated m-shaped dimer with two ligand-binding sites. The first site conserved in TLR7 and TLR8 was used for small ligand-binding essential for its activation. The second site spatially distinct from that of TLR8 was used for a ssRNA-binding that enhanced the affinity of the first-site ligands. The first site preferentially recognized guanosine and the second site specifically bound to uridine moieties in ssRNA. Our structural, biochemical, and mutagenesis studies indicated that TLR7 is a dual receptor for guanosine and uridine-containing ssRNA. Our findings have important implications for understanding of TLR7 function, as well as for therapeutic manipulation of TLR7 activation.


    Organizational Affiliation

    Graduate School of Pharmaceutical Sciences, The University of Tokyo, 7-3-1 Hongo, Bunkyo-ku, Tokyo 113-0033, Japan. Electronic address: shimizu@mol.f.u-tokyo.ac.jp.



Macromolecules

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Toll-like receptor 7A, B, C, D817Macaca mulattaMutation(s): 4 
Gene Names: TLR7
UniProt
Find proteins for B3Y653 (Macaca mulatta)
Explore B3Y653 
Go to UniProtKB:  B3Y653
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupB3Y653
Protein Feature View
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  • Reference Sequence

Find similar nucleic acids by:  Sequence   |   3D Structure  

Entity ID: 2
MoleculeChainsLengthOrganismImage
RNA (5'-R(P*UP*UP*UP*U)-3')E, F, G, H4Homo sapiens
Protein Feature View
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  • Reference Sequence
Oligosaccharides

Help

Entity ID: 3
MoleculeChainsChain Length2D DiagramGlycosylation3D Interactions
2-acetamido-2-deoxy-beta-D-glucopyranose-(1-4)-2-acetamido-2-deoxy-beta-D-glucopyranose
I, J, K, L, M, N
I, J, K, L, M, N
2N-Glycosylation Oligosaccharides Interaction
Glycosylation Resources
GlyTouCan:  G42666HT
GlyCosmos:  G42666HT
GlyGen:  G42666HT
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GMP
Query on GMP

Download Ideal Coordinates CCD File 
GA [auth D],
S [auth B],
Y [auth C],
Z [auth C]
GUANOSINE
C10 H13 N5 O5
NYHBQMYGNKIUIF-UUOKFMHZSA-N
 Ligand Interaction
NAG
Query on NAG

Download Ideal Coordinates CCD File 
AA [auth C],
BA [auth C],
CA [auth C],
DA [auth C],
EA [auth C],
AA [auth C],
BA [auth C],
CA [auth C],
DA [auth C],
EA [auth C],
FA [auth C],
JA [auth D],
KA [auth D],
LA [auth D],
MA [auth D],
NA [auth D],
P [auth A],
Q [auth A],
R [auth A],
U [auth B],
V [auth B],
W [auth B],
X [auth B]
2-acetamido-2-deoxy-beta-D-glucopyranose
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
CA
Query on CA

Download Ideal Coordinates CCD File 
HA [auth D],
IA [auth D],
O [auth A],
T [auth B]
CALCIUM ION
Ca
BHPQYMZQTOCNFJ-UHFFFAOYSA-N
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
GMP Binding MOAD:  5GMF Kd: 1000 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.50 Å
  • R-Value Free: 0.243 
  • R-Value Work: 0.208 
  • R-Value Observed: 0.210 
  • Space Group: P 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 98.084α = 93.83
b = 111.335β = 94.34
c = 113.376γ = 91.48
Software Package:
Software NamePurpose
REFMACrefinement
XDSdata reduction
XDSdata scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment 


Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2016-11-02
    Type: Initial release
  • Version 1.1: 2020-02-26
    Changes: Data collection, Database references, Derived calculations
  • Version 2.0: 2020-07-29
    Type: Remediation
    Reason: Carbohydrate remediation
    Changes: Atomic model, Data collection, Derived calculations, Structure summary