Number of molecules per cell

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Molecule Organism or Strain Value Units Experimental Conditions Assay used Notes Reference(s)

LacI (Lac Repressor)

E. coli

8 to 12 tetramers (32 to 48 monomers)

Grown in tryptone-yeast extract medium, cells harvested "late in the log phase."

  • Medium:
  • Temperature (°C): Yield obtained after the first steps of purification assayed by binding of radioactive IPTG.
  • Doubling time (min): Growth Rate(min): PMID:16591435[1]
  • Growth phase: other:

LacI (Lac Repressor)

E. coli

8 to 12 tetramers (32 to 48 monomers)

Grown in tryptone-yeast extract medium, cells harvested "late in the log phase."

  • Medium:

Yield obtained after the first steps of purification assayed by binding of radioactive IPTG.

PMID:16591435[1]

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  1. ↑ 1.0 1.1 Gilbert, W & Müller-Hill, B (1966) Isolation of the lac repressor. Proc. Natl. Acad. Sci. U.S.A. 56 1891-8 PubMed
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