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seen Jul 15 at 1:04

Aug
7
revised Molecules and human memory
added 123 characters in body
Aug
7
answered Molecules and human memory
Aug
6
comment Are there any pathogenic archaeans?
I agree that their isolation experiments are interesting, and point towards a negative interaction, but their data shows that: "N. equitans had no influence on the doubling times, final cell concentrations, and growth temperature, pH, or salt concentration ranges or optima of I. hospitalis." This does not seem like the characteristics of a parasitism, and I don't think there is a reason to choose a default when there isn't enough data either way. For others: jb.asm.org/content/190/5/1743
Aug
6
comment Are there any pathogenic archaeans?
The conclusion to the paper you are referring to states: "However, the fact that I. hospitalis and N. equitans build a stable coculture without sustained damage to the Ignicoccus population clearly distinguishes N. equitans from the bacterial parasites mentioned above. Therefore, we propose that the association of I. hospitalis and N. equitans represents a highly specialized system. Consequently, assignment to the classical category of symbiosis, commensalism, or parasitism might not be possible even in the future." It is confusing, but thats the nature of the system.
Aug
6
comment Are there any pathogenic archaeans?
I have to disagree with the comment "Since there is no known function of the Nanoarchaeum itself, it should be considered as a parasite." It is an obligate partner of its Ignicoccus host, and genome reduction occurs in beneficial symbionts as well. There is currently no evidence either way, so it should not be assumed to be one way. In the original papers on its discovery it was shown that Ignicoccus growing with Nanoarchaeota reached the same cell densities as Ignicoccus alone. It is quite possible that in their natural environment nanoachaea play a positive role in the symbiosis.
Aug
6
answered Is it possible to clone a Neanderthal?
Aug
5
answered Utilising Mycorrhizal Association
Aug
5
comment Is there any other function of DNA?
Heres the first one I could find that is open source, but if you search "extracellular DNA biofilm" in google theres loads of papers on it: plosone.org/article/info%3Adoi%2F10.1371%2Fjournal.pone.0016861
Aug
5
awarded  Teacher
Aug
5
answered Is there a difference between NADH and NADH2?
Aug
5
answered Is there any other function of DNA?