e/P700

Information
has gloss	eng: P700, or Photosystem I primary donor, (where P stands for pigment) is the reaction-center chlorophyll a molecule in association with photosystem I. Its absorption spectrum peaks at 700 nm. When photosystem I absorbs light, an electron is excited to a higher energy level in the P700 chlorophyll. The resulting P700 with excited electron is designated P700, and is the strongest biological reducing agent (in contrast to P680+ of photosystem II, the strongest biological oxidizing agent). The electron is subsequently captured by the primary electron acceptor. Type I photosystems use ferredoxin-like iron-sulfur cluster proteins as terminal electron acceptors. Photosystem I is more complex than photosystem II (P680), as it has a more complex antenna system, has more subunits in its overall structure, and may exhibit cyclic or non-cyclic electron transfer from the excited P700 to the electron acceptor.
lexicalization	eng: P 700
lexicalization	eng: P700
instance of	c/Light reactions