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Biology  /  Bio 0906  ·  Atom · ~20 seconds

FtsZ and Tubulin: Homologous Structures

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FtsZ and tubulin, the building block of eukaryotic microtubules, are homologous structures sharing a common evolutionary origin, both using GTP to rapidly assemble and disassemble.

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FtsZ forms filaments and rings resembling the structures tubulin forms in a mitotic spindle, evidence of a shared ancestor.

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This resemblance reflects shared ancestry, not a claim that division is identical in both domains.