Double-modified albumins as a tool for antibody purification

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A general approach for anti-hapten antibody purification utilizing double-modified albumins is presented. Purification is based on simultaneous modification of an albumin with a hapten (e.g. fluorescein) and desthiobiotin. Three distinct albumins (BSA, HSA and ovalbumin) were modified accordingly and evaluated for their ability to purify the anti-fluorescein mAb from a mixture of commercial preparation and an E. coli cell lysate. The recovered mAb was obtained at relatively high purity (88-95%), in a wide range of target concentrations (0.66-0.02 mg/ml) within a total purification time of ∼ 20 min. Substantial increase in the contamination background did not affect purity.

Original languageEnglish
Pages (from-to)671-673
Number of pages3
JournalJournal of Biochemical and Biophysical Methods
Issue number4
StatePublished - 10 Jun 2007
Externally publishedYes


  • Affinity chromatography
  • Affinity sinking
  • Antibody purification
  • Avidin
  • Desthiobiotin
  • Streptavidin


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