2RFA:
reference: Structural Analyses of the Ankyrin Repeat Domain of TRPV6 and Related TRPV Ion Channels(,)., Phelps CB, Huang RJ, Lishko PV, Wang RR, Gaudet R, Biochemistry. 2008 Feb 26;47(8):2476-84. Epub 2008 Jan 31. PMID: 18232717

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