Room temperature photooxidation of beta-carotene and peripheral chlorophyll in photosystem II reaction centre
Jazyk angličtina Země Nizozemsko Médium print-electronic
Typ dokumentu časopisecké články, práce podpořená grantem
- MeSH
- beta-karoten metabolismus MeSH
- chlorofyl metabolismus MeSH
- ferrikyanidy metabolismus MeSH
- fotosyntéza MeSH
- fotosystém II - proteinový komplex metabolismus MeSH
- hrách setý MeSH
- molybden metabolismus MeSH
- oxidace-redukce MeSH
- sloučeniny křemíku metabolismus MeSH
- světlo MeSH
- teplota MeSH
- Publikační typ
- časopisecké články MeSH
- práce podpořená grantem MeSH
- Názvy látek
- beta-karoten MeSH
- chlorofyl MeSH
- ferrikyanidy MeSH
- fotosystém II - proteinový komplex MeSH
- hexacyanoferrate III MeSH Prohlížeč
- molybden MeSH
- silicomolybdate MeSH Prohlížeč
- sloučeniny křemíku MeSH
Differential kinetic absorption spectra were measured during actinic illumination of photosystem II reaction centres and core complexes in the presence of electron acceptors silicomolybdate and ferricyanide. The spectra of samples with ferricyanide differ from those with both ferricyanide and silicomolybdate. Near-infrared spectra show temporary beta-carotene and peripheral chlorophyll oxidation during room temperature actinic illumination. Peripheral chlorophyll is photooxidized even after decay of beta-carotene oxidation activity and significant reduction of beta-carotene content in both reaction centres and photosystem II core complexes. Besides, new carotenoid cation is observed after about 1 s of actinic illumination in the reaction centres when silicomolybdate is present. Similar result was observed in PSII core complexes. HPLC analyses of illuminated reaction centres reveal several novel carotenoids, whereas no new carotenoid species were observed in HPLC of illuminated core complexes. Our data support the proposal that pigments of inner antenna are a sink of cations originating in the photosystem II reaction centre.
Zobrazit více v PubMed
Biochemistry. 2007 Dec 25;46(51):15027-32 PubMed
Biochemistry. 2001 May 29;40(21):6431-40 PubMed
Biochemistry. 2003 Feb 4;42(4):1008-15 PubMed
Biochemistry. 2004 Jul 13;43(27):8607-15 PubMed
Biochim Biophys Acta. 2002 Jul 1;1554(3):147-52 PubMed
Photosynth Res. 2005 Jun;84(1-3):297-302 PubMed
Biophys J. 2008 Jul;95(1):105-19 PubMed
Biochim Biophys Acta. 2007 Jan;1767(1):79-87 PubMed
Biochemistry. 2001 Jan 9;40(1):193-203 PubMed
Biochemistry. 1999 Jun 29;38(26):8189-95 PubMed
Biochemistry. 1998 Jul 14;37(28):10040-6 PubMed
Photosynth Res. 2006 Jun;88(3):351-6 PubMed
Photosynth Res. 2007 Oct;94(1):67-78 PubMed
Proc Natl Acad Sci U S A. 1995 May 23;92(11):4798-802 PubMed
Nature. 2005 Dec 15;438(7070):1040-4 PubMed
Biochemistry. 2003 Aug 5;42(30):9127-36 PubMed
Biochemistry. 2006 Feb 14;45(6):1938-45 PubMed
Photochem Photobiol. 2001 Jul;74(1):64-71 PubMed
Proc Natl Acad Sci U S A. 2002 Mar 19;99(6):4091-6 PubMed
Photosynth Res. 2006 Dec;90(3):255-9 PubMed
Proc Natl Acad Sci U S A. 1995 Mar 28;92(7):2929-33 PubMed
