6N3Y

Human Histidine Triad Nucleotide Binding Protein 1 (Hint1) with Bound 5'-O-[(3-Indolyl)-1-Ethyl]Carbamoyl Guanosine


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 

wwPDB Validation   3D Report Full Report


Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Inhibition of HINT1 Modulates Spinal Nociception and NMDA Evoked Behavior in Mice.

Shah, R.M.Peterson, C.Strom, A.Dillenburg, M.Finzel, B.Kitto, K.F.Fairbanks, C.Wilcox, G.Wagner, C.R.

(2019) ACS Chem Neurosci 10: 4385-4393

  • DOI: 10.1021/acschemneuro.9b00432
  • Primary Citation of Related Structures:  
    6N3V, 6N3W, 6N3X, 6N3Y

  • PubMed Abstract: 
  • The interactions between the mu-opioid (MOR) and N -methyl-d-aspartate receptor (NMDAR) constitute an area of intense investigation because of their contributions to maladaptive neuroplasticity. Recent evidence suggests that their association requires the involvement of histidine triad nucleotide-binding protein (HINT1) with the enzyme's active site being critical in its regulatory role ...

    The interactions between the mu-opioid (MOR) and N -methyl-d-aspartate receptor (NMDAR) constitute an area of intense investigation because of their contributions to maladaptive neuroplasticity. Recent evidence suggests that their association requires the involvement of histidine triad nucleotide-binding protein (HINT1) with the enzyme's active site being critical in its regulatory role. Since it is known that spinal blockade of NMDA receptors prevents the development of opioid analgesic tolerance, we hypothesized that spinal inhibition of the HINT1 enzyme may similarly inhibit opioid tolerance. To address these questions, we evaluated novel HINT1 active-site inhibitors in two models of NMDAR and MOR interaction, namely, MOR inhibition of spinal NMDA activation and acute endomorphin-2 tolerance. These studies revealed that while the tryptamine carbamate of guanosine inhibitor, TrpGc, blocked both the development of opioid tolerance and the inhibitory effect of opioids on NMDA activation of the NMDA receptor, acyl-sulfamate analogues could only block the latter. Thermodynamic binding and X-ray crystallographic studies suggested that there are key differences between the bound HINT1-inhibitor surfaces that may be responsible for their differential ability to probe the ability of HINT1 to regulate cross talk between the mu-opioid receptor and NMDA receptor in the spinal cord.


    Organizational Affiliation

    Institute of Pharmaceutical Biology, Technische Universität Braunschweig, Mendelssohnstr. 1, 38106, Braunschweig, Germany. u.wittstock@tu-bs.de.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
Histidine triad nucleotide-binding protein 1A, B129Homo sapiensMutation(s): 0 
Gene Names: HINT1HINTPKCI1PRKCNH1
EC: 3
UniProt & NIH Common Fund Data Resources
Find proteins for P49773 (Homo sapiens)
Explore P49773 
Go to UniProtKB:  P49773
PHAROS:  P49773
Protein Feature View
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  • Reference Sequence
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
HHJ (Subject of Investigation/LOI)
Query on HHJ

Download Ideal Coordinates CCD File 
C [auth A]5'-O-{[2-(1H-indol-3-yl)ethyl]carbamoyl}guanosine
C21 H23 N7 O6
WKHCFGWBMMFLHU-NVQRDWNXSA-N
 Ligand Interaction
CL
Query on CL

Download Ideal Coordinates CCD File 
D [auth B], E [auth B]CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Binding Affinity Annotations 
IDSourceBinding Affinity
HHJ Binding MOAD:  6N3Y Kd: 3650 (nM) from 1 assay(s)
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.80 Å
  • R-Value Free: 0.247 
  • R-Value Work: 0.205 
  • R-Value Observed: 0.207 
  • Space Group: C 1 2 1
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 78.161α = 90
b = 46.327β = 94.32
c = 63.896γ = 90
Software Package:
Software NamePurpose
AutoPROCdata scaling
PHENIXrefinement
PDB_EXTRACTdata extraction
PHASERphasing

Structure Validation

View Full Validation Report



Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2019-09-18
    Type: Initial release
  • Version 1.1: 2019-10-30
    Changes: Data collection, Database references