php12033-sup-0001-FigureS1.docWord document351KFigure S1. UV spectra of two thymine trimmers PG12 and PG13 (putatively XI and XII).
php12033-sup-0002-TableS1.docWord document35KTable S1. Summary of the peaks collected in each fraction, identities of those compounds contained in each fraction and the corresponding product designations and estimated yields of each product.
php12033-sup-0003-AppendixS1.docWord document100KAppendix S1. Contains protocols for the preparation of authentic samples of the four cyclobutane dimers of Thy and for the isolation of photoproducts from various chromatographic fractions obtained from the “first pass” separation of the photoreaction mixture resulting from irradiation of Thy in the frozen state. It also describes the results from NMR and various chemical studies on the product PF25 and contains a discussion of certain quantitative aspects of the production of the four Thy cyclobutane dimers, the (6–4) adduct (II) and the Thy trimer PG12. Also included are the protocols used to detect Thy (6–4) and spore products in UV-irradiated fluid aqueous solutions of Thy, along with detailed results from these studies.

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