Ectopic gene targeting by mapping the site of interaction between two chromosomes

摘要

A linear DNA vector and to a method for identifying chromosomal regions having a physical proximity within a living cell, and/or for locating in chromosomes of a living cell a DNA double strand break having a physical proximity with a known non-repetitive DNA sequence. The linear DNA vector has a first end which comprises a nucleotide sequence capable of homologous recombination to a first region of a cell chromosome which comprises a known non-repetitive DNA sequence. The linear DNA vector also has a second end which comprises a nucleotide sequence non-homologous to the chromosomes of the cell and being capable of illegitimate integration with a second region of a chromosome in physical proximity to the first chromosomal region.