2BJJ

Structure of recombinant human lactoferrin produced in the milk of transgenic cows


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.181 

wwPDB Validation 3D Report Full Report


This is version 1.3 of the entry. See complete history

Literature

The Protein Structure of Recombinant Human Lactoferrin Produced in the Milk of Transgenic Cows Closely Matches the Structure of Human Milk-Derived Lactoferrin

Thomassen, E.A.J.Van Veen, H.A.Van Berkel, P.H.C.Nuijens, J.H.Abrahams, J.P.

(2005) Transgenic Res. 14: 397


  • PubMed Abstract: 
  • Human lactoferrin (hLF) is an iron-binding glycoprotein involved in the host defence against infection and excessive inflammation. As the availability of (human milk-derived) natural hLF is limited, alternative means of production of this biopharmace ...

    Human lactoferrin (hLF) is an iron-binding glycoprotein involved in the host defence against infection and excessive inflammation. As the availability of (human milk-derived) natural hLF is limited, alternative means of production of this biopharmaceutical are extensively researched. Here we report the crystal structure of recombinant hLF (rhLF) expressed in the milk of transgenic cows at a resolution of 2.4 A. To our knowledge, the first reported structure of a recombinant protein produced in milk of transgenic livestock. Even though rhLF contains oligomannose- and hybrid-type N-linked glycans next to complex-type glycans, which are the only glycans found on natural hLF, the structures are identical within the experimental error (r.m.s. deviation of only 0.28 A for the main-chain atoms). Of the differences in polymorphic amino acids between the natural and rhLF variant used, only the side-chain of Asp561 could be modeled into the rhLF electron density map. Taken together, the results confirm the structural integrity of the rhLF variant used in this study. It also confirms the validity of the transgenic cow mammary gland as a vehicle to produce recombinant human proteins.


    Related Citations: 
    • Large Scale Production of Recombinant Human Lactoferrin in the Milk of Transgenic Cows
      Van Berkel, P.H.C.,Welling, M.M.,Geerts, M.,Van Veen, H.A.,Ravensbergen, B.,Salaheddine, M.,Pauwels, E.K.J.,Pieper, F.,Nuijens, J.N.,Nibbering, P.H.
      (2002) Nat.Biotechnol. 20: 484
    • Structure of Human Diferric Lactoferrin Refined at 2.2 Angstrom Resolution
      Haridas, M.,Anderson, B.F.,Baker, E.N.
      (1995) Acta Crystallogr.,Sect.D 51: 629


    Organizational Affiliation

    Biophysical Structural Chemistry, Leiden Institute of Chemistry, Leiden University, Einsteinweg 55, 2333 CC Leiden, The Netherlands.




Macromolecules

Find similar proteins by: Sequence  |  Structure

Entity ID: 1
MoleculeChainsSequence LengthOrganismDetails
LACTOTRANSFERRIN
X
692Homo 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 3 Unique
IDChainsName / Formula / InChI Key2D Diagram3D Interactions
FE
Query on FE

Download SDF File 
Download CCD File 
X
FE (III) ION
Fe
VTLYFUHAOXGGBS-UHFFFAOYSA-N
 Ligand Interaction
NAG
Query on NAG

Download SDF File 
Download CCD File 
X
N-ACETYL-D-GLUCOSAMINE
C8 H15 N O6
OVRNDRQMDRJTHS-FMDGEEDCSA-N
 Ligand Interaction
CO3
Query on CO3

Download SDF File 
Download CCD File 
X
CARBONATE ION
C O3
BVKZGUZCCUSVTD-UHFFFAOYSA-L
 Ligand Interaction
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.4 Å
  • R-Value Free: 0.231 
  • R-Value Work: 0.181 
  • Space Group: P 21 21 21
Unit Cell:
Length (Å)Angle (°)
a = 55.941α = 90.00
b = 97.379β = 90.00
c = 156.297γ = 90.00
Software Package:
Software NamePurpose
REFMACrefinement
MOSFLMdata reduction
MOLREPphasing
SCALAdata scaling

Structure Validation

View Full Validation Report or Ramachandran Plots



Entry History 

Deposition Data

Revision History 

  • Version 1.0: 2005-08-01
    Type: Initial release
  • Version 1.1: 2011-05-08
    Type: Version format compliance
  • Version 1.2: 2011-07-13
    Type: Version format compliance
  • Version 1.3: 2017-06-28
    Type: Data collection