Biochemical techniques for the characterization of G-quadruplex structures: EMSA, DMS footprinting, and DNA polymerase stop assay.

Research output: Contribution to journalArticlepeer-review

85 Scopus citations

Abstract

The proximal promoter region of many human growth-related genes contains a polypurine/polypyrimidine tract that serves as multiple binding sites for Sp1 or other transcription factors. These tracts often contain a guanine-rich sequence consisting of four runs of three or more contiguous guanines separated by one or more bases, corresponding to a general motif known for the formation of an intramolecular G-quadruplex. Recent results provide strong evidence that specific G-quadruplex structures form naturally within these polypurine/polypyrimidine tracts in many human promoter regions, raising the possibility that the transcriptional control of these genes can be modulated by G-quadruplex-interactive agents. In this chapter, we describe three general biochemical methodologies, electrophoretic mobility shift assay (EMSA), dimethylsulfate (DMS) footprinting, and the DNA polymerase stop assay, which can be useful for initial characterization of G-quadruplex structures formed by G-rich sequences.

Original languageEnglish (US)
Pages (from-to)65-79
Number of pages15
JournalMethods in molecular biology (Clifton, N.J.)
Volume608
DOIs
StatePublished - 2010

ASJC Scopus subject areas

  • Molecular Biology
  • Genetics

Fingerprint

Dive into the research topics of 'Biochemical techniques for the characterization of G-quadruplex structures: EMSA, DMS footprinting, and DNA polymerase stop assay.'. Together they form a unique fingerprint.

Cite this