AI Insight
This study investigates how a protein machinery originally evolved for DNA segregation during bacterial cell division has been repurposed over evolutionary time to serve as a cytoskeletal system that regulates cell shape. The researchers demonstrate that components ancestrally dedicated to pulling chromosomes apart have acquired new structural roles, assembling into dynamic filamentous networks that determine and maintain cellular morphology. The work provides mechanistic insights into how conserved molecular systems can be co-opted for fundamentally different biological functions through evolutionary divergence.
Why it matters
Understanding how cytoskeletal systems evolve from pre-existing cellular machinery could inform the development of new antimicrobial strategies targeting bacterial cell shape maintenance, a process essential for pathogen survival and virulence.
Science, Volume 392, Issue 6795, April 2026.