4TTZ:
reference: Structural basis of the 9-fold symmetry of centrioles., Kitagawa D, Vakonakis I, Olieric N, Hilbert M, Keller D, Olieric V, Bortfeld M, Erat MC, Fluckiger I, Gonczy P, Steinmetz MO, Cell. 2011 Feb 4;144(3):364-75. PMID: 21277013

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