studied over the past 70 years ->cells of this normal inhabitant of the higher mammalian colon are typically 2 micrometer long rods that are 1 micrometer in diameter ans weigh 2x10-12g ->its DNA has a molecular mass of 2.5x109 daltons(D), encodes ~4300 proteins(only~2600 different proteins are present in a cell at any given time) ->altogether an Ecoli cell contains 3-6 thousand different types of molecules including proteins, nucleic acids, polysaccharides, lipids and…
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