4BUO

High Resolution Structure of Thermostable Agonist-bound Neurotensin Receptor 1 Mutant without Lysozyme Fusion


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.248 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structure of Signaling-Competent Neurotensin Receptor 1 Obtained by Directed Evolution in Escherichia Coli

Egloff, P.Hillenbrand, M.Klenk, C.Batyuk, A.Heine, P.Balada, S.Schlinkmann, K.M.Scott, D.J.Schuetz, M.Plueckthun, A.

(2014) Proc.Natl.Acad.Sci.USA 111: E655

  • DOI: 10.1073/pnas.1317903111
  • Primary Citation of Related Structures:  3ZEV, 4BV0, 4BWB

  • PubMed Abstract: 
  • Crystallography has advanced our understanding of G protein-coupled receptors, but low expression levels and instability in solution have limited structural insights to very few selected members of this large protein family. Using neurotensin recepto ...

    Crystallography has advanced our understanding of G protein-coupled receptors, but low expression levels and instability in solution have limited structural insights to very few selected members of this large protein family. Using neurotensin receptor 1 (NTR1) as a proof of principle, we show that two directed evolution technologies that we recently developed have the potential to overcome these problems. We purified three neurotensin-bound NTR1 variants from Escherichia coli and determined their X-ray structures at up to 2.75 Å resolution using vapor diffusion crystallization experiments. A crystallized construct was pharmacologically characterized and exhibited ligand-dependent signaling, internalization, and wild-type-like agonist and antagonist affinities. Our structures are fully consistent with all biochemically defined ligand-contacting residues, and they represent an inactive NTR1 state at the cytosolic side. They exhibit significant differences to a previously determined NTR1 structure (Protein Data Bank ID code 4GRV) in the ligand-binding pocket and by the presence of the amphipathic helix 8. A comparison of helix 8 stability determinants between NTR1 and other crystallized G protein-coupled receptors suggests that the occupancy of the canonical position of the amphipathic helix is reduced to various extents in many receptors, and we have elucidated the sequence determinants for a stable helix 8. Our analysis also provides a structural rationale for the long-known effects of C-terminal palmitoylation reactions on G protein-coupled receptor signaling, receptor maturation, and desensitization.


    Organizational Affiliation

    Department of Biochemistry, University of Zurich, 8057 Zurich, Switzerland.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
NEUROTENSIN RECEPTOR TYPE 1
A, B
335Rattus norvegicusGene Names: Ntsr1 (Ntsr)
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
NTS1 neurotensin receptor in complex with neurotensin
Find proteins for P20789 (Rattus norvegicus)
Go to UniProtKB:  P20789
Entity ID: 2
MoleculeChainsSequence LengthOrganismDetails
NEUROTENSIN/NEUROMEDIN N
C, D
10Rattus norvegicusGene Names: Nts
Membrane protein
mpstruct
Group: 
TRANSMEMBRANE PROTEINS: ALPHA-HELICAL
Sub Group: 
G Protein-Coupled Receptors (GPCRs)
Protein: 
NTS1 neurotensin receptor in complex with neurotensin
Find proteins for P20068 (Rattus norvegicus)
Go to UniProtKB:  P20068
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
GLY
Query on GLY

Download SDF File 
Download CCD File 
A, B
GLYCINE
C2 H5 N O2
DHMQDGOQFOQNFH-UHFFFAOYSA-N
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.75 Å
  • R-Value Free: 0.273 
  • R-Value Work: 0.248 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 63.310α = 90.00
b = 89.400β = 90.00
c = 212.130γ = 90.00
Software Package:
Software NamePurpose
PHENIXphasing
XSCALEdata scaling
XDSdata reduction
PHENIXrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2014-01-29
    Type: Initial release
  • Version 1.1: 2014-02-05
    Type: Database references
  • Version 1.2: 2014-02-26
    Type: Database references