1IXF:
reference: Specific damage induced by X-ray radiation and structural changes in the primary photoreaction of bacteriorhodopsin., Matsui Y, Sakai K, Murakami M, Shiro Y, Adachi S, Okumura H, Kouyama T, J Mol Biol 2002 Nov 29;324(3):469-81. PMID: 12445782

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