1LFH

MOLECULAR REPLACEMENT SOLUTION OF THE STRUCTURE OF APOLACTOFERRIN, A PROTEIN DISPLAYING LARGE-SCALE CONFORMATIONAL CHANGE


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

Molecular replacement solution of the structure of apolactoferrin, a protein displaying large-scale conformational change.

Norris, G.E.Anderson, B.F.Baker, E.N.

(1991) Acta Crystallogr.,Sect.B 47: 998-1004


  • PubMed Abstract: 
  • The crystal structure of an orthorhombic form of human apolactoferrin (ApoLf) has been determined from 2.8 A diffractometer data by molecular replacement methods. A variety of search models derived from the diferric lactoferrin structure (Fe2Lf) were ...

    The crystal structure of an orthorhombic form of human apolactoferrin (ApoLf) has been determined from 2.8 A diffractometer data by molecular replacement methods. A variety of search models derived from the diferric lactoferrin structure (Fe2Lf) were used to obtain a consistent solution to the rotation function. An R-factor search gave the correct translational solution and the model was refined by rigid-body least-squares refinement (program CORELS). Only three of the four domains were located correctly by this procedure, however; the fourth was finally placed correctly by rotating it manually onto three strands of electron density which were recognized as part of its central beta-sheet. The final model, refined by restrained least-squares methods to an R factor of 0.214 for data in the resolution range 10.0 to 2.8 A, shows a large domain movement in the N-terminal half of the molecule (a 54 degree rotation of domain N2) and smaller domain movements elsewhere, when compared with Fe2Lf. A feature of the crystal structure is that although the ApoLf and Fe2Lf unit cells appear very similar, their crystal packing and molecular structures are quite different.


    Related Citations: 
    • Structure of Human Lactoferrin: Crystallographic Structure Analysis and Refinement at 2.8 Angstroms Resolution
      Anderson, B.F.,Baker, H.M.,Norris, G.E.,Rice, D.W.,Baker, E.N.
      (1989) J.Mol.Biol. 209: 711
    • Apolactoferrin Structure Demonstrates Ligand-Induced Conformational Change in Transferrins
      Anderson, B.F.,Baker, H.M.,Norris, G.E.,Rumball, S.V.,Baker, E.N.
      (1990) Nature 344: 784
    • Structure of Human Lactoferrin at 3.2 Angstroms Resolution
      Anderson, B.F.,Baker, H.M.,Dodson, E.J.,Norris, G.E.,Rumball, S.V.,Waters, J.M.,Baker, E.N.
      (1987) Proc.Natl.Acad.Sci.USA 84: 1769
    • Transferrins: Insights Into Structure and Function from Studies on Lactoferrin
      Baker, E.N.,Rumball, S.V.,Anderson, B.F.
      (1987) Trends Biochem.Sci.(Pers. Ed.) 12: 350


    Organizational Affiliation

    Department of Chemistry and Biochemistry, Massey University, Palmerston North, New Zealand.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LACTOFERRIN
A
691Homo sapiensMutation(s): 0 
Gene Names: LTF (GIG12, LF)
EC: 3.4.21.-
Find proteins for P02788 (Homo sapiens)
Go to Gene View: LTF
Go to UniProtKB:  P02788
Small Molecules
Ligands 1 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
CL
Query on CL

Download SDF File 
Download CCD File 
A
CHLORIDE ION
Cl
VEXZGXHMUGYJMC-UHFFFAOYSA-M
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.8 Å
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 152.090α = 90.00
b = 94.580β = 90.00
c = 55.790γ = 90.00
Software Package:
Software NamePurpose
TNTrefinement

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 1993-10-31
    Type: Initial release
  • Version 1.1: 2008-03-03
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-11-29
    Type: Derived calculations, Other