Thermoluminescence properties of the isolated photosystem two reaction centre

✍ Scribed by Imre Vass; David J. Chapman; James Barber

• Book ID: 104623251
• Publisher: Springer
• Year: 1989
• Tongue: English
• Weight: 512 KB
• Volume: 22
• Category: Article
• ISSN: 0166-8595
• DOI: 10.1007/bf00048307

✦ Synopsis

Formation of thermoluminescence signals is characteristic of energy-and charge storage in Photosystem II. In isolated D1/D2/cytochrome b-559 Photosystem II reaction centre preparation four thermoluminescence components were found. These appear at -180 (Z band), between -80 and -50 (Zv band), at -30 and at + 35°C. The Z band arises from pigment molecules but not correlated with photosynthetic activity. The Zv and -30°C bands arise from the recombination of charge pairs stabilized in the Photosystem II reaction centre complex. The + 35°C band probably corresponds to the artefact glow peak resulting from a pigment-protein-detergent interaction in subchloroplast preparations (R6zsa Zs, Droppa M and Horv/tth G (1989) Biochim Biophys Acta 973, 350-353).