Analysis of Molecular Masses and Oligomeric States of Protein Complexes by Blue Native Electrophoresis and Isolation of Membrane Protein Complexes by Two-Dimensional Native Electrophoresis

Anal Biochem. 1994 Mar;217(2):220-30. doi: 10.1006/abio.1994.1112.

Abstract

Blue native Electrophoresis is a "charge shift" method developed for isolation of native membrane protein complexes from biological membranes that also separates both acidic and basic water-soluble proteins at a fixed pH of 7.5. In combination with a second dimension sodium dodecylsulfate electrophoresis it provides an analytical method for the determination of molecular mass and oligomeric state of nondissociated complexes, of subunit composition, and of degree of purity and for the detection of subcomplexes. The method was applied to analysis of cytochrome bc/bf complexes. By combination of a novel colorless native polyacrylamide gel electrophoresis (CN-PAGE) with blue native BN-PAGE, a two-dimensional native technique was developed that is suitable for preparation of highly pure membrane protein complexes.

Publication types

  • Comparative Study
  • Research Support, Non-U.S. Gov't

MeSH terms

  • Animals
  • Calibration
  • Cattle
  • Cytochromes / chemistry
  • Cytochromes / isolation & purification
  • Cytochromes f
  • Electrophoresis, Polyacrylamide Gel / methods
  • Glycine / analogs & derivatives
  • Hydrogen-Ion Concentration
  • Intracellular Membranes / chemistry
  • Isoelectric Focusing
  • Macromolecular Substances
  • Membrane Proteins / chemistry
  • Membrane Proteins / isolation & purification*
  • Mitochondria, Heart / chemistry
  • Molecular Weight
  • Oligopeptides / chemistry
  • Oligopeptides / isolation & purification
  • Rosaniline Dyes
  • Sodium Dodecyl Sulfate

Substances

  • Cytochromes
  • Macromolecular Substances
  • Membrane Proteins
  • Oligopeptides
  • Rosaniline Dyes
  • Sodium Dodecyl Sulfate
  • Cytochromes f
  • Glycine
  • tricine