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Comparison of the low temperature absorption and fluorescence spectra in the QY band region between the CP47 and CP43 inner antenna proteins of Synechocystis 6803 and spinach. Absorption and fluorescence spectra for CP47-His (A) and CP43-His (B) from Synechocystis 6803 and for CP47 and CP43 from spinach were recorded at 77 K and normalized to 1 at the absorption and fluorescence maxima. Second derivatives of absorption spectra (2nd Der Abs) are also shown.
