6AS9:
reference: Atomic insights into the genesis of cellular filaments by globular proteins., McPartland L, Heller DM, Eisenberg DS, Hochschild A, Sawaya MR, Nat Struct Mol Biol. 2018 Aug;25(8):705-714. doi: 10.1038/s41594-018-0096-7. Epub, 2018 Aug 3. PMID: 30076408

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