yes he's at linkedin I already posted the link below
jordan
On Feb 5, 2012, at 4:01 AM, Mega <masterstorm123@gmail.com> wrote:
> I saw him on 123people and thought about registering...
> But then I browsed his public profile and as I clicked on one article,
> it said ''member couldn't be found''. The same happened with his other
> articles.
>
> I think he has abadonned his profile there....
>
> Is anyone registred at linkedIn?? To see if his profile hasn't been
> deleted.
>
>
> _____
>
> You said it, the plants they are now producing are very dim. So it
> would be less problem that they're propagated because when the company
> brings out the brightly glowing plants, consumers would like that even
> more.
>
>
> On 5 Feb., 04:54, Anselm Levskaya <levsk...@gmail.com> wrote:
>> I don't know much about the state of this particular company, but what
>> they're trying to do is pretty hard.
>>
>> Having used the lux operon before in bacteria, the first thing to note
>> is that it's pretty dim, even at the maximum output levels in a
>> healthy, dense culture. It's much less bright than a glowstick, say.
>> Requiring very dark adapted eyes to appreciate.
>>
>> Getting a healthy dose of photons out of a biochemical pathway
>> requires a lot of energy. I imagine simply putting the lux pathway
>> into plants didn't result in a species bright enough to really impress
>> a consumer market. It will take a lot of work to direct more of the
>> plants' resources into the precursors necessary to fuel the
>> photochemical event.
>>
>> Almost all bioluminescent systems use a catalytic enzyme called a
>> "luciferase" that activates a species specific "luciferin" with an
>> electron-donor that ultimately ends up generating a peroxide
>> intermediate with strained bonds whose decay is high-energy enough to
>> cause a singlet-state excitation and quick photo-emission.
>>
>> The lux system typically only generates 10^3 photons/sec/bacterium,
>> which can briefly result in a dim glow in a dense oxygenated culture
>> (10^12 bacteria/mL * 10^3 = 10^15, but only when you shake them to
>> oxygenate all the cells). Some species of krill and fish can push
>> 10^12 photons from their light emitting organs ~continuously.
>>
>> Note that 1 lumen is ~ 10^15 photons/sec, and a weak nightlight bulb
>> is typically around 10^17 photons/sec, so we're talking about subtle
>> effects here. American fireflies can pulse brighter by controlling
>> the photochemical reaction rate and can get up to 10^14 photons/sec.
>> I'm not sure what the bioluminescent record holder is. These bugs
>> probably control brightness by constricting oxygenation of their
>> photocytes, wherein the luciferase is found near peroxisomes and the
>> luciferin is bunched up in cytoplasmic granules.
>>
>> Here are some general refs:http://anselmlevskaya.com/papers/bioluminescence.pdf - marine
>> bioluminescence reviewhttp://www.photobiology.info/Viviani.html- discussion of terrestrial
>> bioluminescence
>
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