In vivo visualization of chromosomes using lac operator-repressor binding

Andrew S. Belmont, Aaron F. Straight

Research output: Contribution to journalArticlepeer-review


This article describes a new technique for direct, in vivo visualization of chromosome dynamics based on lac repressor recognition of direct repeats of the lac operator. The method allows the tagging of specific chromosomal sites and thus in situ localization with minimal perturbation of structure. Detection by light microscopy, using GFP-repressor fusion proteins or immunofluorescence, can be complemented by higher-resolution electron microscopy using immunogold staining. Applications of this method will facilitate the investigation of interphase chromosome dynamics, as well as chromosome segregation during cell division in organisms that lack cytologically condensed chromosomes.

Original languageEnglish (US)
Pages (from-to)121-124
Number of pages4
JournalTrends in Cell Biology
Issue number3
StatePublished - Mar 1998

ASJC Scopus subject areas

  • Cell Biology


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