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The succession, or following, of one thing or event after another. [L. sequor, to follow]
Alu s.'sin the human genome a repeated, relatively conserved s. of about 300 bp that often contains a cleavage site for the restriction enzyme AluI near the center; about 1 million copies in the human genome.
chi s.an octomeric s. of bases in DNA that participates in RecBC-mediated genetic recombination.
chi-s.'sa specific DNA s. in bacterial genomes that allows for extensive genetic recombination.
coding s.the portion of DNA that codes for transcription of messenger RNA. See exon.
insertion s.discrete DNA s.'s of approximately 1000 nucleotides which are repeated at various sites on a bacterial chromosome, certain plasmids, and bacteriophages, which can move from one site to another on the chromosome, to another plasmid in the same bacterium, or to a bacteriophage.
leader s.'ss.'s at the end of either nucleic acids (DNA and RNA) or proteins that must be processed off to allow for a specific function of the mature molecule.
long terminal repeat s.'sregions of the RNA genome associated with regulation, integration, and expression of retroviruses.
monotonic s.a s. in which each value in a set is greater than the preceding value.
palindromic s. See palindrome.
regulatory s.any DNA s. that is responsible for the regulation of gene expression, such as promoters and operators.
Shine-Dalgarno s.a purine-rich, untranslated region of mRNA upstream from the initiation codon in prokaryotes; assists in aligning the mRNA on the ribosome.
termination s.termination codon
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