We engineer proteins to transform biological complexity into

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The Selectivity Challenge

Many biologics struggle to distinguish diseased tissue from healthy tissue, limiting their safety and efficacy potential.

  • Disease targets can closely resemble healthy targets.
  • Subtle structural features can control binding.
  • Protein interactions are dynamic, not static.
  • The design space is too large to test experimentally.

9Bio’s Approach

9Bio designs biologics to act more precisely where they are needed, aiming to improve both safety and efficacy.

  • Structure-guided design: We model protein structure to understand how biologics bind and how that binding can be engineered.
  • Dynamic interaction modeling: We study how proteins behave across changing biological conditions, not just in a single static state.
  • Large-scale design exploration: We screen vast numbers of protein variants digitally to find rare candidates with the right performance profile.
  • The result: A more predictive path to disease-selective biologics, with large-scale digital exploration used to identify the best candidates before lab testing.