5LYM:
reference: Studies of monoclinic hen egg-white lysozyme. IV. X-ray refinement at 1.8 A resolution and a comparison of the variable regions in the polymorphic forms., Rao ST, Sundaralingam M, Acta Crystallogr D Biol Crystallogr. 1996 Jan 1;52(Pt 1):170-5. PMID: 15299739

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