1BWW

BENCE-JONES IMMUNOGLOBULIN REI VARIABLE PORTION, T39K MUTANT


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.221 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

1.7 A structure of the stabilized REIv mutant T39K. Application of local NCS restraints.

Uson, I.Pohl, E.Schneider, T.R.Dauter, Z.Schmidt, A.Fritz, H.J.Sheldrick, G.M.

(1999) Acta Crystallogr.,Sect.D 55: 1158-1167


  • PubMed Abstract: 
  • The X-ray structure of the T39K mutant of the variable domain of a human immunoglobulin kappa light chain has been determined at room temperature to 1.7 A resolution with a conventional R factor of 0. 182. T39K crystallizes in the triclinic space gro ...

    The X-ray structure of the T39K mutant of the variable domain of a human immunoglobulin kappa light chain has been determined at room temperature to 1.7 A resolution with a conventional R factor of 0. 182. T39K crystallizes in the triclinic space group P1 [a = 35.4 (1), b = 40.1 (1), c = 43.1 (1) A, alpha = 66.9 (1), beta = 85.4 (1), gamma = 73.8 (1) degrees ]. The unit-cell contains two monomers, related by a non-crystallographic twofold axis. The use of a novel type of local non-crystallographic symmetry restraints on related isotropic displacement parameters and 1-4 distances as incorporated in the refinement program SHELXL improves the model and quality of the maps, but local differences between both monomers in areas subject to different packing contacts can still be observed. 12 overall anisotropic scaling parameters were refined. These may have compensated for the difficulties in accurately scaling single rotation axis image plate data from a triclinic crystal, because of the scarcity of common equivalent reflections. The final model has been used to perform a number of tests on anisotropic scaling, non-crystallographic symmetry, anisotropic refinement, determination of standard uncertainties and bulk solvent correction. It is remarkable that removal of the NCS restraints from the final model caused Rfree to increase. These tests clarify the strategies for optimum use of SHELXL for refinement at medium as opposed to atomic resolution.


    Organizational Affiliation

    Institut für Anorganische Chemie der Universität Göttingen, Tammannstrasse 4, D37077 Göttingen, Germany. uson@shelx.uni-ac.gwdg.de




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
PROTEIN (IG KAPPA CHAIN V-I REGION REI)
A, B
109Homo sapiensN/A
Find proteins for P01593 (Homo sapiens)
Go to UniProtKB:  P01593
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.7 Å
  • R-Value Free: 0.221 
  • Space Group: P 1
Unit Cell:
Length (Å)Angle (°)
a = 35.400α = 66.90
b = 40.100β = 85.40
c = 43.100γ = 73.80
Software Package:
Software NamePurpose
SHELXL-97refinement
DENZOdata reduction
AMoREphasing
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1998-10-07
    Type: Initial release
  • Version 1.1: 2008-04-27
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance