Expression, purification and crystallization of recombinant human TRAIL

Acta Crystallogr D Biol Crystallogr. 1999 May;55(Pt 5):1101-4. doi: 10.1107/s090744499900164x.


TRAIL (also known as Apo-2L) belongs to the tumour necrosis factor (TNF) cytokine family and induces rapid apoptosis in a wide variety of tumour cell lines upon binding to the death-signalling receptors on the cell membrane. Normal cells are resistant to TRAIL, owing to the expression of decoy receptors which lack functional death domains and antagonize TRAIL-induced apoptosis. Soluble and functional human TRAIL, expressed in Escherichia coli and refolded into a functional form, has been crystallized. The crystals belong to space group P63 with unit-cell dimensions a = b = 65.61, c = 131. 70 A. The asymmetric unit contains two molecules of TRAIL, with a crystal volume per protein mass (Vm) of 2.41 A3 Da-1 and a solvent content of about 42% by volume. A native and a platinum-derivative data set to 2.8 and 3.5 A resolution, respectively, were obtained from frozen crystals. Structure determination by a combined molecular replacement and isomorphous replacement method is in progress.

Publication types

  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Apoptosis / drug effects
  • Apoptosis Regulatory Proteins
  • Cell Line
  • Crystallization
  • Crystallography, X-Ray
  • Humans
  • Membrane Glycoproteins / biosynthesis*
  • Membrane Glycoproteins / chemistry*
  • Membrane Glycoproteins / genetics
  • Membrane Glycoproteins / isolation & purification
  • Mice
  • Models, Molecular
  • Protein Conformation
  • Recombinant Proteins / biosynthesis*
  • Recombinant Proteins / chemistry*
  • Recombinant Proteins / genetics
  • Recombinant Proteins / isolation & purification
  • TNF-Related Apoptosis-Inducing Ligand
  • Tumor Necrosis Factor-alpha / biosynthesis*
  • Tumor Necrosis Factor-alpha / chemistry*
  • Tumor Necrosis Factor-alpha / genetics
  • Tumor Necrosis Factor-alpha / isolation & purification


  • Apoptosis Regulatory Proteins
  • Membrane Glycoproteins
  • Recombinant Proteins
  • TNF-Related Apoptosis-Inducing Ligand
  • TNFSF10 protein, human
  • Tnfsf10 protein, mouse
  • Tumor Necrosis Factor-alpha