6 May
2010
6 May
'10
2:48 p.m.
The two more studied bacterial attractants are, in this order,
aspartate and serine. I do not have the size right now, and I have an
exam in 30 minutes so no time to look it up now, but the diffusion
coefficient is 10^-9.
On Thu, May 6, 2010 at 10:32 AM, <garralda(a)ac.upc.edu> wrote:
Hi Luis Carlos,
First of all, thank you for your 'two cents', it is an interesting
information for us.
About the attractant concentration you mentioned,
please, could you tell us the size molecules you used?
Regards
--
Luis Carlos Cobo Rus GnuPG ID: 44019B60
Hi Nora,
Max will probably have more insightful comments, but here are my two
cents:
- I think you can make a bit bigger the transmitter/receptor. E. Coli
(a human gut bacteria used very often in research) radius is 0.5microm
to 1microm (500 to 1000 nm) and 2 microm long. I don't think we want
to go smaller than that.
- About concentration, regarding my experience with bacteria (so I am
talking for particles used for routing purposes, not for information
encoding), they are sensitive to attractant concentration, broadly
speaking, from 1mM (mili Molar, this is 0.001 moles* per litre) to
tens of nM (nanomolar, 10^-9 moles per litre).
A mole (un mol) it's Avogadros number of particles (about 6.022*10^23)
Looking forward to work side by side to all of you in Barcelona!
On Wed, May 5, 2010 at 10:44 AM, <garralda(a)ac.upc.edu> wrote:
Hi all again,
There is attached an excel file where you can find a list of parameters
we
use in the simulations, such as dimension space, particle radius,
Coefficient diffusion and so on.
Some of them we are not sure if they are realistic or not.
If somebody has sources where we can find the values for that figures or
any
comment could you add it the document and sent it back?
Thanks
Nora
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--
Luis Carlos Cobo Rus GnuPG ID: 44019B60