Assertion: microtubule's protofilament | /r/HasAspect | straight conformation
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Source sentences:
text: A generally accepted model in the field is that tubulin–GTP polymerizes into protofilaments that have a straight conformation, but that following GTP hydrolysis, the tubulin conformation changes to a curved form, such that the tubulin–GDP that is locked into the microtubule core is in a strained conformation24.