3SA0

Complex of ERK2 with norathyriol


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5947 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.164 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

Norathyriol Suppresses Skin Cancers Induced by Solar Ultraviolet Radiation by Targeting ERK Kinases.

Li, J.Malakhova, M.Mottamal, M.Reddy, K.Kurinov, I.Carper, A.Langfald, A.Oi, N.Kim, M.O.Zhu, F.Sosa, C.P.Zhou, K.Bode, A.M.Dong, Z.

(2012) Cancer Res. 72: 260-270

  • DOI: 10.1158/0008-5472.CAN-11-2596
  • Also Cited By: 4N0S

  • PubMed Abstract: 
  • Ultraviolet (UV) irradiation is the leading factor in the development of skin cancer, prompting great interest in chemopreventive agents for this disease. In this study, we report the discovery of norathyriol, a plant-derived chemopreventive compound ...

    Ultraviolet (UV) irradiation is the leading factor in the development of skin cancer, prompting great interest in chemopreventive agents for this disease. In this study, we report the discovery of norathyriol, a plant-derived chemopreventive compound identified through an in silico virtual screening of the Chinese Medicine Library. Norathyriol is a metabolite of mangiferin found in mango, Hypericum elegans, and Tripterospermum lanceolatum and is known to have anticancer activity. Mechanistic investigations determined that norathyriol acted as an inhibitor of extracellular signal-regulated kinase (ERK)1/2 activity to attenuate UVB-induced phosphorylation in mitogen-activated protein kinases signaling cascades. We confirmed the direct and specific binding of norathyriol with ERK2 through a cocrystal structural analysis. The xanthone moiety in norathyriol acted as an adenine mimetic to anchor the compound by hydrogen bonds to the hinge region of the protein ATP-binding site on ERK2. Norathyriol inhibited in vitro cell growth in mouse skin epidermal JB6 P+ cells at the level of G(2)-M phase arrest. In mouse skin tumorigenesis assays, norathyriol significantly suppressed solar UV-induced skin carcinogenesis. Further analysis indicated that norathyriol mediates its chemopreventive activity by inhibiting the ERK-dependent activity of transcriptional factors AP-1 and NF-κB during UV-induced skin carcinogenesis. Taken together, our results identify norathyriol as a safe new chemopreventive agent that is highly effective against development of UV-induced skin cancer.


    Organizational Affiliation

    The Hormel Institute, University of Minnesota, Austin, Minnesota 55912, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Mitogen-activated protein kinase 1
A
360Homo sapiensGene Names: MAPK1 (ERK2, PRKM1, PRKM2)
EC: 2.7.11.24
Find proteins for P28482 (Homo sapiens)
Go to Gene View: MAPK1
Go to UniProtKB:  P28482
Small Molecules
Ligands 2 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
NRA
Query on NRA

Download SDF File 
Download CCD File 
A
norathyriol
1,3,6,7-tetrahydroxy-9H-xanthen-9-one
C13 H8 O6
ZHTQCPCDXKMMLU-UHFFFAOYSA-N
 Ligand Interaction
SO4
Query on SO4

Download SDF File 
Download CCD File 
A
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Modified Residues  1 Unique
IDChainsTypeFormula2D DiagramParent
CME
Query on CME
A
L-PEPTIDE LINKINGC5 H11 N O3 S2CYS
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.5947 Å
  • R-Value Free: 0.200 
  • R-Value Work: 0.164 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 48.687α = 90.00
b = 69.411β = 108.99
c = 59.721γ = 90.00
Software Package:
Software NamePurpose
PHENIXmodel building
ADSCdata collection
PHENIXphasing
HKL-2000data reduction
PHENIXrefinement
HKL-2000data scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2011-12-14
    Type: Initial release
  • Version 1.1: 2012-01-18
    Type: Database references