The Fungal Response Regulator Skn7: Domain Architecture and Multifunctional Roles in Fungal Biology.

Skn7 is a fungi-specific nuclear response regulator that integrates a conserved REC receiver, coiled-coil oligomerization motif, and HSF DNA-binding domain to coordinate multiple stress and developmental programs.

• Why it matters: Two-component phosphorelay signaling helps fungi adapt to changing environments, but Skn7’s absence from mammalian and plant cells makes it a promising antifungal target.
• What they did: This review synthesizes structural and functional evidence across fungal phyla to map Skn7’s domain architecture and its regulatory links to oxidative stress, MAPK cross-talk, and transcriptional activation and repression.
• The result: Skn7 is linked to oxidative stress responses, fungal development and morphogenesis, secondary metabolism (including pigments, toxins, and volatile organic compounds), and autolysis/programmed cell death cascades, implying therapeutic leverage.

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