Metabolic biotinylation of secreted and cell surface proteins from mammalian cells

M. Brandon Parrott, Michael A Barry

Research output: Contribution to journalArticle

49 Citations (Scopus)

Abstract

Due to its strength and specificity, the interaction between avidin and biotin has been used in a variety of medical and scientific applications ranging from drug targeting to immunohistochemistry. To maximize the application of this technology in mammalian systems, we recently demonstrated the ability to metabolically biotinylate tagged proteins in mammalian cells using the endogenous biotin ligase enzymes of the mammalian cell. This technology allows sitespecific biotinylation without any exogenous reagents and eliminates possible inactivation of the protein of interest by nonspecific biotinylation. Here, we report further expansion of the mammalian metabolic biotinylation technology to enable biotinylation of proteins secreted from mammalian cells and expressed on their cell surface by cosecretion with BirA, the biotin ligase of E. coli. This technique can be used to biotinylate secreted proteins for purification or targeting and also for biotinylating the surfaces of mammalian cells to facilitate their labeling and purification from other nontagged cells.

Original languageEnglish (US)
Pages (from-to)993-1000
Number of pages8
JournalBiochemical and Biophysical Research Communications
Volume281
Issue number4
DOIs
StatePublished - 2001
Externally publishedYes

Fingerprint

Biotinylation
Membrane Proteins
Cells
Biotin
Purification
Proteins
Technology
Avidin
Ligases
Labeling
Drug Delivery Systems
Enzymes
Immunohistochemistry

Keywords

  • Avidin-biotin technology
  • Biotinylation
  • BirA
  • PSTCD (P. shermanii transcarboxylase domain)
  • Secretion.

ASJC Scopus subject areas

  • Biochemistry
  • Biophysics
  • Molecular Biology

Cite this

Metabolic biotinylation of secreted and cell surface proteins from mammalian cells. / Parrott, M. Brandon; Barry, Michael A.

In: Biochemical and Biophysical Research Communications, Vol. 281, No. 4, 2001, p. 993-1000.

Research output: Contribution to journalArticle

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