LB contains glucose?

hbkg at hbkg at
Sun Feb 23 07:11:31 EST 1997

Glucose is known to repress lac promoter expression.
LB media (1% tryptone, 0.5% yeast extract, 1% NaCl) is largely
used for media for overproducing cloned gene products.
gene expression under the regulation of lac promoter is repressed by
glucose in the media.
I am curious how much glucose exists in LB.

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