Orientation of reaction center
complexes from Rhodobacter sphaeroides in Proteoliposomes and the effect of o-phenanthroline on electrogenesis during primary photochemical reaction.
After being captured, each pigment 'hands off' electrons to the next molecule until the electron is transferred to the reaction center
A] are in the (electrically) neutral state, the PSII reaction center
is in a state [P.
We meet the two chlorophyll a molecules in the reaction center
, surrounded by the antenna complex pigments, and other characters in the play.
It may be that the algae in the hypolimnion possess few reaction centers
or that the reaction centers
are blocked or inactive.
provides coverage of a wide variety of reaction types, including more than 10,000 solid-phase reactions, and covers broad areas of chemistry including organic and organometallic chemistry, agrochemistry, and pharmaceutical science.
1, it consists of light-harvesting antennae complexes composed of carotenoids and chlorophylls a and b connected to Photosystem (PS) I and II reaction centers
, a cytochrome [b.
The Kohonen neural network, a kind of artificial neural network, was used to classify chemical reactions with a common reaction center
described by physicochemical properties .
They are somewhat like a satellite dish antenna, in that from 100 to 5,000 pigment molecules (called collectively the "antenna") are clustered around a central receiving unit, which is called the reaction center
Computer simulations have shown that quantum coherences work in photosynthetic antennae to prevent excitations from getting trapped on their way to the reaction center
, where the conversion to chemical energy begins.
0] is not always a constant; its value may increase if the PSII reaction center
is compromised or if the transfer of excitation energy from the antenna to the reaction centers
is impaired (SCHREIBER et al.
It's these initial, near instantaneous energy transfers that are so remarkably efficient--scientists estimate that more than 95 percent of the energy in the light hitting a leaf reaches the photosynthesis reaction center