Adaptyv Bio and Twist Bioscience tested the designs by surface plasmon resonance; a binder had to be a hit at both labs (LqhIII was tested only at Adaptyv Bio), with every dissociation constant at 1 micromolar or tighter and no signal against the human protein CLEC12A.

The exact words it rests on

Both labs measured binding by surface plasmon resonance (SPR) ... The design needed to be a hit at both labs 3 ... every KD needed to be 1 µM or tighter. We also required that the design show no signal against CLEC12A ... Footnote 3: LqhIII was assessed only by Adaptyv Bio.

What the source said when we opened it, on 21 Oct 2026.

The source

How Claude designed protein binders against scorpion neurotoxins
Anthropic · 2026-10-20

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Checked

Checked by the notis newsroom on 21 Oct 2026, against the source above.

In the story

Anthropic says 17 of 211 designed proteins bound scorpion toxins in tests 21 Oct 2026