3W1Z:
reference: Nonequivalence Observed for the 16-Meric Structure of a Small Heat Shock Protein, SpHsp16.0, from Schizosaccharomyces pombe., Hanazono Y, Takeda K, Oka T, Abe T, Tomonari T, Akiyama N, Aikawa Y, Yohda M, Miki K, Structure. 2013 Feb 5;21(2):220-8. doi: 10.1016/j.str.2012.11.015. Epub 2012 Dec , 27. PMID: 23273429

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