3BLG

STRUCTURAL BASIS OF THE TANFORD TRANSITION OF BOVINE BETA-LACTOGLOBULIN FROM CRYSTAL STRUCTURES AT THREE PH VALUES; PH 6.2


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.56 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.192 

wwPDB Validation 3D Report Full Report


This is version 1.2 of the entry. See complete history

Literature

Structural basis of the Tanford transition of bovine beta-lactoglobulin.

Qin, B.Y.Bewley, M.C.Creamer, L.K.Baker, H.M.Baker, E.N.Jameson, G.B.

(1998) Biochemistry 37: 14014-14023

  • DOI: 10.1021/bi981016t
  • Primary Citation of Related Structures:  
  • Also Cited By: 2AKQ

  • PubMed Abstract: 
  • The structures of the trigonal crystal form of bovine beta-lactoglobulin variant A at pH 6.2, 7.1, and 8.2 have been determined by X-ray diffraction methods at a resolution of 2.56, 2. 24, and 2.49 A, respectively. The corresponding values for R (Rfr ...

    The structures of the trigonal crystal form of bovine beta-lactoglobulin variant A at pH 6.2, 7.1, and 8.2 have been determined by X-ray diffraction methods at a resolution of 2.56, 2. 24, and 2.49 A, respectively. The corresponding values for R (Rfree) are 0.192 (0.240), 0.234 (0.279), and 0.232 (0.277). The C and N termini as well as two disulfide bonds are clearly defined in these models. The glutamate side chain of residue 89 is buried at pH 6.2 and becomes exposed at pH 7.1 and 8.2. This conformational change, involving the loop 85-90, provides a structural basis for a variety of pH-dependent chemical, physical, and spectroscopic phenomena, collectively known as the Tanford transition.


    Related Citations: 
    • Structure Determination of Bovine Beta-Lactoglobulin Variants a and B
      Qin, B.Y.
      (1998) Thesis, Massey University --: --


    Organizational Affiliation

    Centre for Structural Biology, Institutes of Fundamental Sciences and Molecular Biosciences, Massey University, Palmerston North, New Zealand.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
BETA-LACTOGLOBULIN
A
162Bos taurusMutation(s): 0 
Gene Names: LGB
Find proteins for P02754 (Bos taurus)
Go to UniProtKB:  P02754
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.56 Å
  • R-Value Free: 0.240 
  • R-Value Work: 0.192 
  • Space Group: P 32 2 1
Unit Cell:
Length (Å)Angle (°)
a = 53.750α = 90.00
b = 53.750β = 90.00
c = 111.560γ = 120.00
Software Package:
Software NamePurpose
X-PLORrefinement
AMoREphasing
DENZOdata reduction
SCALEPACKdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1999-01-27
    Type: Initial release
  • Version 1.1: 2008-03-25
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance