The homo-oligomerisation of both Sas-6 and Ana2 is required for efficient centriole assembly in flies.
Sas-6 and Ana2/STIL proteins are required for centriole duplication and the homooligomerisation properties of Sas-6 help establish the ninefold symmetry of the central cartwheel that initiates centriole assembly. Ana2/STIL proteins are poorly conserved, but they all contain a predicted Central Coiled-Coil Domain (CCCD). Here we show that theDrosophilaAna2 CCCD forms a tetramer, and we solve its structure to 0.8 Å, revealing that it adopts an unusual parallel-coil topology. We also solve the s...Expand abstract
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