Subfractionation of heart tissue: The "in sequence" myofilament protein extraction of myocardial tissue

Lesley A. Kane, Irina Neverova, Jennifer E. Van Eyk

Research output: Chapter in Book/Report/Conference proceedingChapter

17 Scopus citations


Proteomic analysis of heart tissue is complicated by the large dynamic range of its proteins. The most abundant proteins are the myofilament proteins, which comprise the contractile apparatus. This chapter describes a protocol for fractionation of heart tissue that extracts the myofilament proteins into a separate sample fraction, allowing analysis of lower-abundance proteins. Importantly, this is performed in a manner that is compatible with two-dimensional electrophoresis and high-performance liquid chromatography, two of main technologies of proteomics. The method produces three fractions based on solubility at different pHs: (1) cytoplasmic-enriched extract (neutral pH), (2) myofilament-enriched extract (acidic pH), and (3) membrane protein-enriched pellet. Fractionation of heart tissue in this manner provides the basis for in-depth proteomic analysis.

Original languageEnglish (US)
Title of host publicationCardiovascular Proteomics
Subtitle of host publicationMethods and Protocols
EditorsFernando Vivanco
Number of pages4
StatePublished - Feb 5 2007

Publication series

NameMethods in Molecular Biology
ISSN (Print)1064-3745


  • Myofilaments
  • Striated muscle
  • Subproteome fractionation

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics


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