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Upstream
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In molecular biology, the stretch of DNA
base pairs that lie in the 5´ direction from the site of initiation of
transcription. Usually the first transcribed base is designated +1 and the
upstream nucleotides are marked with minus signs, e.g., -1, -10. Also, to
the 5´ side of a particular gene or sequence of nucleotides.
Definition
from:
www.fao.org/docrep/003/X3910E/X3910E24.htm
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The region extending in the 5' direction
from a gene
Definition
from:
Hypermedia Glossary Of Genetic Terms.
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