1N4E:
reference: Crystal structure of a DNA decamer containing a cis-syn thymine dimer., Park H, Zhang K, Ren Y, Nadji S, Sinha N, Taylor JS, Kang C, Proc Natl Acad Sci U S A. 2002 Dec 10;99(25):15965-70. Epub 2002 Nov 27. PMID: 12456887

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