Morton, JenniferHall, JeremySmith, PaulFusamichi, AkitaKoua, FaisalShen, Jian-RenKrausz, Elmars2015-12-100005-2728http://hdl.handle.net/1885/62493Routinely prepared PS II core samples are often contaminated by a significant (∼ 1-5%) fraction of PS I, as well as related proteins. This contamination is of little importance in many experiments, but masks the optical behaviour of the deep red state iKeywords: absorption; absorption spectroscopy; article; chromatophore; circular dichroism; controlled study; electron spin resonance; excitation; low temperature; measurement; nonhuman; phonon; photosystem I; photosystem II; priority journal; spectrometry; spinach; Fluorescence; Fluorescence line-narrowing; Photosystem I; Photosystem II; Spectral hole-burningDetermination of the PS I content of PS II core preparations using selective emission: a new emission of PS II at 780nm201410.1016/j.bbabio.2013.09.0082016-02-24