IUBio

mass of bacteria

Em ekhatipoREMOVE at midway.uchicagoREMOVE.edu
Mon Apr 8 02:00:06 EST 2002


"Nicholas Landau" <njl2q at virginia.edu> wrote in message
news:3CB11E37.D05743F9 at virginia.edu...
>
> For what it is worth, Neidhardt et al. do list a figure for the dry weight
of a
> single E. coli cell in their microbial physiology text."  The figure they
list
> is 2.9 E-13 g.  The do not include any citations for this figure
specifically,
> but they do state that it is "an average of many measurements..."
Neidhardt,
> F.C., J. L. Ingraham, and M. Schaecher.  1990.  Physiology of the
Bacterial
> Cell.  Sunderland, Mass: Sinauer Associates.

On what page in Neidhardt did you find it? I wonder where I could have made
a mistake, because I based my estimations on my own experience with other
bacteria of similar size to E.coli, but spherical. As far as I remember,
10^9 dry cells from a liter of culture weighed in the range of 1g pretty
consistently for me about 6 years ago :-).

>
> Would you like the mailing address for that egg?

No I have the book.

>
> Incidentally, who said that the largest viruses are larger than the
smallest
> bacteria?  I have to admit, I know little about viruses, but I can hardly
> believe that statement is true.  What virus is as large as a bacterium?

Pox virus is 0.25 x 0.5 micron...

- Emir






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