2O9U

Monellin (MNEI) at 1.15 resolution


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.15 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.131 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Monellin (MNEI) at 1.15 A resolution

Hobbs, J.R.Munger, S.D.Conn, G.L.

(2007) Acta Crystallogr.,Sect.F 63: 162-167

  • DOI: 10.1107/S1744309107005271

  • PubMed Abstract: 
  • The X-ray crystal structure of a single-chain monellin protein (MNEI) has been determined at 1.15 A resolution. The model was refined to convergence employing anisotropic displacement parameters and riding H atoms to produce a final model with R(work ...

    The X-ray crystal structure of a single-chain monellin protein (MNEI) has been determined at 1.15 A resolution. The model was refined to convergence employing anisotropic displacement parameters and riding H atoms to produce a final model with R(work) and R(free) values of 0.132 and 0.162, respectively. The crystal contains a single MNEI protein in the asymmetric unit and unusually lacks the dimer interface observed in all previous crystal structures of monellin and its single-chain derivatives. The high resolution allowed a more detailed view of MNEI than previously possible, with 38 of the 96 residues modelled with alternative side-chain conformations, including four core residues Thr12, Cys41, Leu62 and Ile75. Four stably bound negative ions were also located, providing new insight into potential electrostatic interactions of MNEI with the largely negatively charged surface of the sweet taste receptor T1R2-T1R3.


    Organizational Affiliation

    Manchester Interdisciplinary Biocentre, Faculty of Life Sciences, University of Manchester, Manchester M60 1QD, England.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Monellin chain B and Monellin chain A
X
97Dioscoreophyllum cumminsiiMutation(s): 0 
Find proteins for P02882 (Dioscoreophyllum cumminsii)
Go to UniProtKB:  P02882
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
SO4
Query on SO4

Download SDF File 
Download CCD File 
X
SULFATE ION
O4 S
QAOWNCQODCNURD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.15 Å
  • R-Value Free: 0.165 
  • R-Value Work: 0.131 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 27.103α = 90.00
b = 66.316β = 111.60
c = 27.154γ = 90.00
Software Package:
Software NamePurpose
ADSCdata collection
CCP4data scaling
MOSFLMdata reduction
REFMACrefinement
MOLREPphasing
PDB_EXTRACTdata extraction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2007-02-20
    Type: Initial release
  • Version 1.1: 2008-05-01
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-08-16
    Type: Advisory, Refinement description, Source and taxonomy