Daddy, where did (PS)I come from?

Citation
D. Baymann et al., Daddy, where did (PS)I come from?, BBA-BIOENER, 1507(1-3), 2001, pp. 291-310
Citations number
88
Categorie Soggetti
Biochemistry & Biophysics
Journal title
BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS
ISSN journal
00052728 → ACNP
Volume
1507
Issue
1-3
Year of publication
2001
Pages
291 - 310
Database
ISI
SICI code
0005-2728(20011030)1507:1-3<291:DWD(CF>2.0.ZU;2-E
Abstract
The reacton centre I (RCI)-type photosystems from plants, cyano-, helio- an d green sulphur bacteria are compared and the essential properties of an ar chetypal RCI are deduced. Species containing RCI-type photosystems most pro bably cluster together on a common branch of the phylogenetic tree. The pre dicted branching order is green sulphur, helio- and cyanobacteria. Striking similarities between RCI- and RCII-type photosystems recently became appar ent in the three-dimensional structures of photosystem I (PSI), PSII and RC II The phylogenetic relationship between all presently known photosystems i s analysed suggesting (a) RCI as the ancestral photosystem and (b) the desc endence of PSII from RCI via gene duplication and gene splitting. An evolut ionary model trying to rationalise available data is presented. (C) 2001 El sevier Science B.V. All rights reserved.