Bypassing evolutionary dead ends and switching the rate-limiting step of a human immunotherapeutic enzyme
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The Trp metabolite kynurenine (KYN) accumulates in numerous solid tumours and mediates potent immunosuppression. Bacterial kynureninases (KYNases), which preferentially degrade kynurenine, can relieve immunosuppression in multiple cancer models, but immunogeni... ...
