5WS3

Crystal structures of human orexin 2 receptor bound to the selective antagonist EMPA determined by serial femtosecond crystallography at SACLA


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.199 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Crystal Structures of Human Orexin 2 Receptor Bound to the Subtype-Selective Antagonist EMPA.

Suno, R.Kimura, K.T.Nakane, T.Yamashita, K.Wang, J.Fujiwara, T.Yamanaka, Y.Im, D.Horita, S.Tsujimoto, H.Tawaramoto, M.S.Hirokawa, T.Nango, E.Tono, K.Kameshima, T.Hatsui, T.Joti, Y.Yabashi, M.Shimamoto, K.Yamamoto, M.Rosenbaum, D.M.Iwata, S.Shimamura, T.Kobayashi, T.

(2018) Structure 26: 7-19.e5

  • DOI: 10.1016/j.str.2017.11.005
  • Primary Citation of Related Structures:  

  • PubMed Abstract: 
  • Orexin peptides in the brain regulate physiological functions such as the sleep-wake cycle, and are thus drug targets for the treatment of insomnia. Using serial femtosecond crystallography and multi-crystal data collection with a synchrotron light s ...

    Orexin peptides in the brain regulate physiological functions such as the sleep-wake cycle, and are thus drug targets for the treatment of insomnia. Using serial femtosecond crystallography and multi-crystal data collection with a synchrotron light source, we determined structures of human orexin 2 receptor in complex with the subtype-selective antagonist EMPA (N-ethyl-2-[(6-methoxy-pyridin-3-yl)-(toluene-2-sulfonyl)-amino]-N-pyridin-3-ylmethyl-acetamide) at 2.30-Å and 1.96-Å resolution. In comparison with the non-subtype-selective antagonist suvorexant, EMPA contacted fewer residues through hydrogen bonds at the orthosteric site, explaining the faster dissociation rate. Comparisons among these OX2R structures in complex with selective antagonists and previously determined OX1R/OX2R structures bound to non-selective antagonists revealed that the residue at positions 2.61 and 3.33 were critical for the antagonist selectivity in OX2R. The importance of these residues for binding selectivity to OX2R was also revealed by molecular dynamics simulation. These results should facilitate the development of antagonists for orexin receptors.


    Organizational Affiliation

    Department of Medical Chemistry and Cell Biology, Graduate School of Medicine, Kyoto University, Konoe-cho, Yoshida, Sakyo-ku, Kyoto 606-8501, Japan.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Orexin receptor type 2,GlgA glycogen synthase,Orexin receptor type 2
A
560Pyrococcus abyssi (strain GE5 / Orsay)Homo sapiens
This entity is chimeric
Mutation(s): 0 
Gene Names: HCRTR2
Membrane protein
mpstruc
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
OX2 orexin receptor with bound suvorexant
Find proteins for Q9V2J8 (Pyrococcus abyssi (strain GE5 / Orsay))
Go to UniProtKB:  Q9V2J8
Find proteins for O43614 (Homo sapiens)
Go to Gene View: HCRTR2
Go to UniProtKB:  O43614
Small Molecules
Ligands 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
OLA
Query on OLA

Download SDF File 
Download CCD File 
A
OLEIC ACID
C18 H34 O2
ZQPPMHVWECSIRJ-KTKRTIGZSA-N
 Ligand Interaction
1PE
Query on 1PE

Download SDF File 
Download CCD File 
A
PENTAETHYLENE GLYCOL
PEG400
C10 H22 O6
JLFNLZLINWHATN-UHFFFAOYSA-N
 Ligand Interaction
7MA
Query on 7MA

Download SDF File 
Download CCD File 
A
N-ethyl-2-[(6-methoxypyridin-3-yl)-(2-methylphenyl)sulfonyl-amino]-N-(pyridin-3-ylmethyl)ethanamide
C23 H26 N4 O4 S
KJPHTXTWFHVJIG-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.3 Å
  • R-Value Free: 0.219 
  • R-Value Work: 0.199 
  • Space Group: C 1 2 1
Unit Cell:
Length (Å)Angle (°)
a = 97.510α = 90.00
b = 75.980β = 112.30
c = 96.100γ = 90.00
Software Package:
Software NamePurpose
CrystFELdata processing
PHENIXrefinement
Cootmodel building
Cheetahdata extraction
MOLREPphasing

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History & Funding Information

Deposition Data


Funding OrganizationLocationGrant Number
JSTJapan--
MEXTJapan--
JSPSJapan26102725
JSPSJapan15H04338

Revision History 

  • Version 1.0: 2017-12-13
    Type: Initial release
  • Version 1.1: 2018-01-31
    Type: Data collection
  • Version 1.2: 2018-06-20
    Type: Data collection, Database references