Before you head over to Amazon with nothing but a lone Washington in hand, remember: it's 99 cents with a 2-year contract, and it's only available on AT&T.
It was wonderful — and the lone dessert available.
Since, based on the lone example available, it looks likely that liquid water is a prerequisite for life, knowing a planet's atmospheric pressures would help focus the search for a second.Dr Meadows proposes to make the measurement by looking at a planet's atmospheric oxygen.
With the 20GB PS3 laid to rest and the 60GB PS3 as the only lone version available currently, it makes sense for Sony to do a more beefed up model for those using their PS3 for multimedia.
TP protonates several basic nitrogen atoms, and QP tries to calculate the number of hydrogen bonds with the solvent water, which is very close to counting the number of lone pairs available for hydrogen bond formation.
With an available lone pair of electrons, the amino group can serve as the acceptor in a hydrogen bond with the bridging water molecule, and most importantly, thereby act as a general base.
While the nitro group has no available lone pair and is mesomerically and inductively electron-withdrawing, the nitroso group, the hydroxylamine, and the amine groups have an available lone pair and hence are mesomerically electron-donating.
Thus, our model suggests that Ago2 uses main chain carbonyls inside the t1-binding pocket to direct the hydrogen atoms on water B away from the purine 6-position, leaving only lone pair electrons available for establishing interactions with t1 nucleotides.
In this model, both hydrogen atoms in water 'A' are engaged in hydrogen bonds with the main chain carbonyls of Lys-440 and Met-437 (and possibly the main chain carbonyl of Asp-480), leaving only lone pair electrons available for interactions with water 'B'.
Water can also behave as a lewis base because of the lone electron pairs available on the oxygen atom.
