Direction of DNA sequences within chromatids determined using strand-specific FISH.
The 5' to 3' direction of DNA strands within chromatids of metaphase chromosomes can be determined by using simultaneous hybridization of a single strand of the telomere probe and a single strand of a repetitive sequence to slides pretreated for strand-specific hybridization. The telomere probe identifies the direction of the DNA helical strand remaining in each chromatid of the metaphase chromosomes. The direction of the repetitive sequence is then determined from the direction of the strand to which it hybridizes. This method was used to determine the 5' to 3' direction of three repetitive DNA sequences, each for a different human repeat family.
Meyne
J
J
Life Sciences Division, Los Alamos National Laboratory, NM 87545, USA.
Goodwin
E H
EH
D001483:Base Sequence; D002842:Chromatids / Q000235:genetics*; D004247:DNA / Q000032:analysis*; D015342:DNA Probes; D006801:Humans; D017404:In Situ Hybridization, Fluorescence / Q000379:methods*; D008969:Molecular Sequence Data; D012091:Repetitive Sequences, Nucleic Acid; D012854:Sister Chromatid Exchange / Q000235:genetics
D015342:DNA Probes; D004247:DNA