
	Where results make sense

Topic: Photosystem

In the News (Fri 13 Nov 09)

Northern Trust

Marvin Harrison

Peter Chernin

Gary Locke

Match Play

Penelope Cruz

Mickey Rourke

AR Rahman

Danny Boyle

Hugh Jackman

	Photosynthesis Encyclopedia Article @ NaturalResearch.org (Site not responding. Last check: 2007-10-21)
		A photosystem: a light-harvesting cluster of photosynthetic pigments in a chloroplast thylakoid membrane.
		The photons are captured in the antenna complexes of photosystem I and II by chlorophyll and accessory pigments (see diagram at right).
		Photosystem II is the only known biological enzyme that carries out this oxidation of water.
	www.naturalresearch.org /encyclopedia/Photosynthesis (3083 words)

	Recent Publications(1994-1999) (Site not responding. Last check: 2007-10-21)
		N-bromosccinimide modification of tryptophan 241 at the C-terminus of the manganese stabilizing protein of plant photosystem II influences its structure and function.
		Simultaneous measurement of photosystem I and photosystem II probed by modulated transmission at 820 nm and by chlorophyll a fluorescence in the subms to second time range.
		Photosystem II chlorophyll a fluorescence lifetimes and intensity are independent of the antenna size differences between barley wild-type and chlorina mutants: Photochemical quenching and xanthophyll cycle dependent non-photochemical quenching of fluorescence.
	www.life.uiuc.edu /govindjee/recent_papers.html (1694 words)

	Exobiology - EvoWiki (Site not responding. Last check: 2007-10-21)
		Chlorophyll is typically present in large complexes (photosystems) that contain proteins and that may contain carotenoids, an additional photosynthetic pigment.
		It works by transferring electrons, which can pump hydrogen ions out of the cell, to be returned through ATPase, or else can be used to fix carbon and other essentials.
		Many bacteria have only one type of photosystem, but cyanobacteria, which release oxygen, have two, allowing them to utilize water.
	wiki.cotch.net /index.php/Exobiology (3915 words)

	IMCS Publications
		Grzymski, J., Orrico, C., Schofield, O. Monochromatic ultraviolet light induced damage to photosystem II efficiency and carbon fixation in the marine diatom Thalassiosira pseudonanna (3H).
		Moore, M.I. and J.L. Wilkin 1998, Variability in the South Pacific Deep Western Boundary Current from Current-meter Observations and a High Resolution Global Model, Journal of Geophysical Research, 103, 5439-5457.
		Schofield, O., Evens, T. J., Millie, D. Photosystem II quantum yields and xanthophyll-cycle pigments of the macroalga, Sargassum natans (Phaeophyta): Dynamic responses under natural sunlight.
	www.marine.rutgers.edu /pubs (9290 words)

Try your search on: Qwika (all wikis)