chi sequence

chi se·quence

an octomeric sequence of bases in DNA that participates in RecBC-mediated genetic recombination.
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In addition, we used the most recent reference sequences (mentioned above) to perform an updated bioinformatics survey of the Chi sequence (5'GCTGGTGG-3') for the CYP21 genes.
We found no exact match for a Chi sequence throughout the CYP21 genes; however, we did find a Chi-like sequence (1 mismatch in 5'-GCTGGTGG-3') at 6 sites within or in the vicinity of intron 2 (Fig.
Specific genome-wide elements, such as a Chi sequence (5'-GCTGGTGG-3'), are important triggers for recombination events in eukaryotic cells.