D loop

(redirected from displacement loop)
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D loop

a structure in replicating circular DNA.
Synonym(s): displacement loop

A Box

A highly conserved (i.e., the DNA nucleotide sequence is similar among many eukaryotic species) region located between base pairs +10 and +20 "upstream" on the tRNA gene, which have the dual role of encoding functional tRNA and promoting tRNA transcription, and acting as a site of receptive protein binding.