3SS2:
reference: Rapid visualization of hydrogen positions in protein neutron crystallographic structures., Munshi P, Chung SL, Blakeley MP, Weiss KL, Myles DA, Meilleur F, Acta Crystallogr D Biol Crystallogr. 2012 Jan;68(Pt 1):35-41. Epub 2011, Dec 9. PMID: 22194331

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