The crystallographic structure of the Ligand Binding domain of the NR7 nuclear receptor from the amphioxus Branchiostoma lanceolatum

Experimental Data Snapshot

  • Resolution: 2.00 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 

wwPDB Validation   3D Report Full Report

This is version 1.2 of the entry. See complete history


A novel nuclear receptor subfamily enlightens the origin of heterodimerization.

Beinsteiner, B.Markov, G.V.Bourguet, M.McEwen, A.G.Erb, S.Patel, A.K.M.El Khaloufi El Khaddar, F.Z.Lecroisey, C.Holzer, G.Essabri, K.Hazemann, I.Hamiche, A.Cianferani, S.Moras, D.Laudet, V.Billas, I.M.L.

(2022) BMC Biol 20: 217-217

  • DOI: https://doi.org/10.1186/s12915-022-01413-0
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 

    Nuclear receptors are transcription factors of central importance in human biology and associated diseases. Much of the knowledge related to their major functions, such as ligand and DNA binding or dimerization, derives from functional studies undertaken in classical model animals. It has become evident, however, that a deeper understanding of these molecular functions requires uncovering how these characteristics originated and diversified during evolution, by looking at more species. In particular, the comprehension of how dimerization evolved from ancestral homodimers to a more sophisticated state of heterodimers has been missing, due to a too narrow phylogenetic sampling. Here, we experimentally and phylogenetically define the evolutionary trajectory of nuclear receptor dimerization by analyzing a novel NR7 subgroup, present in various metazoan groups, including cnidarians, annelids, mollusks, sea urchins, and amphioxus, but lost in vertebrates, arthropods, and nematodes.

  • Organizational Affiliation

    IGBMC (Institute of Genetics and of Molecular and Cellular Biology), Illkirch, France.

Find similar proteins by:  (by identity cutoff)  |  3D Structure
Entity ID: 1
MoleculeChains Sequence LengthOrganismDetailsImage
Nuclear hormone receptor 7233Branchiostoma lanceolatumMutation(s): 0 
Find proteins for A0A6B9UN24 (Branchiostoma lanceolatum)
Explore A0A6B9UN24 
Go to UniProtKB:  A0A6B9UN24
Entity Groups  
Sequence Clusters30% Identity50% Identity70% Identity90% Identity95% Identity100% Identity
UniProt GroupA0A6B9UN24
Sequence Annotations
  • Reference Sequence
Experimental Data & Validation

Experimental Data

  • Resolution: 2.00 Å
  • R-Value Free: 0.235 
  • R-Value Work: 0.192 
  • R-Value Observed: 0.194 
  • Space Group: P 32 1 2
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 46.29α = 90
b = 46.29β = 90
c = 163.017γ = 120
Software Package:
Software NamePurpose
XSCALEdata scaling
PDB_EXTRACTdata extraction
XDSdata reduction

Structure Validation

View Full Validation Report

Entry History & Funding Information

Deposition Data

Funding OrganizationLocationGrant Number
French National Research AgencyFranceANR-2010-BLAN-1234-01
French National Research AgencyFranceFRISBI ANR-10-INSB-05-01
French National Research AgencyFranceANR-10-LABX-0030-INRT
French National Research AgencyFranceANR-10-IDEX-0002-02

Revision History  (Full details and data files)

  • Version 1.0: 2022-09-14
    Type: Initial release
  • Version 1.1: 2022-10-12
    Changes: Database references
  • Version 1.2: 2024-01-31
    Changes: Data collection, Refinement description