Molecular engineering of biotin-glutamic acid decarboxylase 65 fusion protein (Biotin-GAD65) for non-radioactive GAD65 antibody assay

J Biotechnol. 2003 Aug 15;103(3):249-55. doi: 10.1016/s0168-1656(03)00125-1.

Abstract

We constructed biotinylated fusion proteins that linked to three detection tags to GAD65 at the N-terminus, and expressed them in an E. coli expression system. The Biotin14-GAD65 protein exhibited the strongest binding to both the GAD65 antibody and the streptavidin among the three constructs. We describe the optimal conditions using a Biotin14-GAD65-based immunoassay for the detection of GAD65 antibody.

Publication types

  • Evaluation Study
  • Validation Study

MeSH terms

  • Antibodies / analysis*
  • Antibodies / immunology
  • Antigen-Antibody Complex / analysis
  • Biosensing Techniques / methods*
  • Biotin / chemistry*
  • Biotin / genetics*
  • Biotin / metabolism
  • Enzyme-Linked Immunosorbent Assay / methods*
  • Glutamate Decarboxylase / chemistry*
  • Glutamate Decarboxylase / genetics*
  • Glutamate Decarboxylase / metabolism
  • Isoenzymes / chemistry*
  • Isoenzymes / genetics*
  • Isoenzymes / metabolism
  • Protein Binding
  • Protein Engineering / methods*
  • Radioimmunoassay
  • Recombinant Fusion Proteins
  • Reproducibility of Results
  • Sensitivity and Specificity

Substances

  • Antibodies
  • Antigen-Antibody Complex
  • Isoenzymes
  • Recombinant Fusion Proteins
  • Biotin
  • Glutamate Decarboxylase
  • glutamate decarboxylase 2