6TM2:
reference: Assembly Mechanism of Mucin and von Willebrand Factor Polymers., Javitt G, Khmelnitsky L, Albert L, Bigman LS, Elad N, Morgenstern D, Ilani T, Levy Y, Diskin R, Fass D, Cell. 2020 Oct 2. pii: S0092-8674(20)31162-4. doi: 10.1016/j.cell.2020.09.021. PMID: 33031746

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