<networking> Fewer network hops away from a backbone or hub. For example, a small ISP that connects to the Internet through a larger ISP that has their own connection to the backbone is downstream from the larger ISP, and the larger ISP is upstream from the smaller ISP.

(01 Apr 1999)

upsiloid, upsilon, upsitting, upstart < Prev | Next > upstream, upstream activation site, uptake

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<molecular biology> Refers to nucleotide sequences that precede the codons specifying the mRNA or that precede (are on the 5' side of) the protein coding sequence. Also used of the early events in any process that involves sequential reactions.

This entry appears with permission from the Dictionary of Cell and Molecular Biology

(11 Mar 2008)

upsilon, upsitting, upstart, upstream < Prev | Next > upstream activation site, uptake, uptake hydrogenase

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