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Figure 7


Fig. 7. Two possibilities exist for the orientation of {gamma}-tubulin (and consequently the {gamma}TuRC) with respect to the long axis of the MT to which it is bound. (A) Adjacent {gamma}-tubulin subunits make shoulder-to-shoulder contacts in the template model, as indicated by the red oval that marks the position of the GTP-binding pocket on {gamma}-tubulin. (B) {gamma}-tubulin subunits make head-to-tail contacts in the protofilament model.





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