3KZ3

A structure of a lambda repressor fragment mutant


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Work: 0.188 

wwPDB Validation 3D Report Full Report


This is version 1.1 of the entry. See complete history

Literature

A survey of lambda repressor fragments from two-state to downhill folding.

Liu, F.Gao, Y.G.Gruebele, M.

(2010) J.Mol.Biol. 397: 789-798

  • DOI: 10.1016/j.jmb.2010.01.071

  • PubMed Abstract: 
  • We survey the two-state to downhill folding transition by examining 20 lambda(6-85)* mutants that cover a wide range of stabilities and folding rates. We investigated four new lambda(6-85)* mutants designed to fold especially rapidly. Two were engine ...

    We survey the two-state to downhill folding transition by examining 20 lambda(6-85)* mutants that cover a wide range of stabilities and folding rates. We investigated four new lambda(6-85)* mutants designed to fold especially rapidly. Two were engineered using the core remodeling of Lim and Sauer, and two were engineered using Ferreiro et al.'s frustratometer. These proteins have probe-dependent melting temperatures as high as 80 degrees C and exhibit a fast molecular phase with the characteristic temperature dependence of the amplitude expected for downhill folding. The survey reveals a correlation between melting temperature and downhill folding previously observed for the beta-sheet protein WW domain. A simple model explains this correlation and predicts the melting temperature at which downhill folding becomes possible. An X-ray crystal structure with a 1.64-A resolution of a fast-folding mutant fragment shows regions of enhanced rigidity compared to the full wild-type protein.


    Organizational Affiliation

    Center for Biophysics and Computational Biology, University of Illinois, Urbana, IL 61801, USA.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
Repressor protein CI
A, B
80Escherichia phage lambdaMutation(s): 4 
Gene Names: cI
Find proteins for P03034 (Escherichia phage lambda)
Go to UniProtKB:  P03034
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 1.64 Å
  • R-Value Work: 0.188 
  • Space Group: P 1 21 1
Unit Cell:
Length (Å)Angle (°)
a = 32.630α = 90.00
b = 58.710β = 98.18
c = 42.850γ = 90.00
Software Package:
Software NamePurpose
SHELXL-97refinement
MAR345dtbdata collection
AMoREphasing
SCALEPACKdata scaling
HKL-2000data reduction

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2010-02-23
    Type: Initial release
  • Version 1.1: 2011-07-13
    Type: Version format compliance