کد مقاله | کد نشریه | سال انتشار | مقاله انگلیسی | نسخه تمام متن |
---|---|---|---|---|
1943230 | 1052656 | 2008 | 7 صفحه PDF | دانلود رایگان |
![عکس صفحه اول مقاله: Association of chlorophyll a/c2 complexes to photosystem I and photosystem II in the cryptophyte Rhodomonas CS24 Association of chlorophyll a/c2 complexes to photosystem I and photosystem II in the cryptophyte Rhodomonas CS24](/preview/png/1943230.png)
Photosynthetic supercomplexes from the cryptophyte Rhodomonas CS24 were isolated by a short detergent treatment of membranes from the cryptophyte Rhodomonas CS24 and studied by electron microscopy and low-temperature absorption and fluorescence spectroscopy. At least three different types of supercomplexes of photosystem I (PSI) monomers and peripheral Chl a/c2 proteins were found. The most common complexes have Chl a/c2 complexes at both sides of the PSI core monomer and have dimensions of about 17 × 24 nm. The peripheral antenna in these supercomplexes shows no obvious similarities in size and/or shape with that of the PSI–LHCI supercomplexes from the green plant Arabidopsis thaliana and the green alga Chlamydomonas reinhardtii, and may be comprised of about 6–8 monomers of Chl a/c2 light-harvesting complexes. In addition, two different types of supercomplexes of photosystem II (PSII) dimers and peripheral Chl a/c2 proteins were found. The detected complexes consist of a PSII core dimer and three or four monomeric Chl a/c2 proteins on one side of the PSII core at positions that in the largest complex are similar to those of Lhcb5, a monomer of the S-trimer of LHCII, Lhcb4 and Lhcb6 in green plants.
Journal: Biochimica et Biophysica Acta (BBA) - Bioenergetics - Volume 1777, Issue 9, September 2008, Pages 1122–1128