Crystal Structure of the Human Nur77 Ligand-binding Domain

Experimental Data Snapshot

  • Resolution: 2.06 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.199 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


The orphan nuclear receptor Nur77 regulates LKB1 localization and activates AMPK

Zhan, Y.Chen, Y.Zhang, Q.Zhuang, J.Tian, M.Chen, H.Zhang, L.Zhang, H.He, J.Wang, W.Wu, R.Wang, Y.Shi, C.Yang, K.Li, A.Xin, Y.Li, T.Y.Yang, J.Y.Zheng, Z.Yu, C.Lin, S.Chang, C.Huang, P.Lin, T.Wu, Q.

(2012) Nat Chem Biol 8: 897-904

  • DOI: https://doi.org/10.1038/nchembio.1069
  • Primary Citation of Related Structures:  
    3V3E, 3V3Q

  • PubMed Abstract: 

    Liver kinase B1 (LKB1) has important roles in governing energy homeostasis by regulating the activity of the energy sensor kinase AMP-activated protein kinase (AMPK). The regulation of LKB1 function, however, is still poorly understood. Here we demonstrate that the orphan nuclear receptor Nur77 binds and sequesters LKB1 in the nucleus, thereby attenuating AMPK activation. This Nur77 function is antagonized by the chemical compound ethyl 2-[2,3,4-trimethoxy-6-(1-octanoyl)phenyl]acetate (TMPA), which interacts with Nur77 with high affinity and at specific sites. TMPA binding of Nur77 results in the release and shuttling of LKB1 to the cytoplasm to phosphorylate AMPKα. Moreover, TMPA effectively reduces blood glucose and alleviates insulin resistance in type II db/db and high-fat diet- and streptozotocin-induced diabetic mice but not in diabetic littermates with the Nur77 gene knocked out. This study attains a mechanistic understanding of the regulation of LKB1-AMPK axis and implicates Nur77 as a new and amenable target for the design and development of therapeutics to treat metabolic diseases.

  • Organizational Affiliation

    State Key Laboratory of Cellular Stress Biology, School of Life Sciences, Xiamen University, Xiamen, Fujian, China.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nuclear receptor subfamily 4 group A member 1A [auth B],
B [auth A]
257Homo sapiensMutation(s): 0 
UniProt & NIH Common Fund Data Resources
Find proteins for P22736 (Homo sapiens)
Explore P22736 
Go to UniProtKB:  P22736
PHAROS:  P22736
GTEx:  ENSG00000123358 
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupP22736
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.06 Å
  • R-Value Free: 0.265 
  • R-Value Work: 0.195 
  • R-Value Observed: 0.199 
  • Space Group: P 21 21 21
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 74.43α = 90
b = 76.773β = 90
c = 128.953γ = 90
Software Package:
Software NamePurpose
PDB_EXTRACTdata extraction
AUTOMARdata reduction

Structure Validation

View Full Validation Report

Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2012-09-26
    Type: Initial release
  • Version 1.1: 2013-07-10
    Changes: Database references
  • Version 1.2: 2023-11-08
    Changes: Data collection, Database references, Derived calculations, Refinement description