Zehao-Tommy Zhang

@tommyz626.bsky.social

not clearly described, determined, limited, or provided with a meaning

Why do many aging interventions come & go, yet Caloric Restriction (CR) remains a robust pillar, extending healthspan across species? Its benefits are even noted in ancient eastern texts like The Yellow Emperor’s Classic of Internal Medicine!

Today we report the directed evolution of HUH into rHUH, a sequence-specific covalent protein tag for RNA labeling. rHUH was hard to engineer: the initial HUH template had no RNA activity, so we started with RNA-DNA hybrids. 30 rounds of selection on the yeast surface were required, and 7 cycles of

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