Step One Prove lead-sensing logic
Aim: I am designing a modular genetic cassette in which a heavy-metal sensing element, likely pbrR/pbr, controls either a standard reporter or a geosmin output module, with HSR considered as an auxiliary stress-sensitive element rather than the primary detector
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Design intent: Detect bioavailable Pb(II) using a PbrR/pbr lead-responsive sensing module. Initial output will be a fluorescent reporter to validate sensing behavior. A later version may replace the reporter with a geosmin-associated output module for sensory repair signaling.