๐Ÿงฌap biology review

PHO signaling pathway

Written by the Fiveable Content Team โ€ข Last updated August 2025
Verified for the 2027 exam
Verified for the 2027 examโ€ขWritten by the Fiveable Content Team โ€ข Last updated August 2025

Definition

A signal transduction pathway in eukaryotic microorganisms that regulates the expression of genes involved in phosphate homeostasis in response to extracellular inorganic phosphate levels.

AP course connection

Topic 4.3: 4.3 Signal Transduction Pathways

Unit 4

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