In the granulosa cells,

All the androgens and much of the progesterone are converted into estrogens by the enzyme aromatase

TLS Online TPP Program

#Id: 3866

#Unit 5. Developmental Biology

Histidine phosphatase activity of DhkA causes inactivation of RegA, the accumulation of cAMP and PKA activation, causes spore maturation.

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#Id: 3867

#Unit 5. Developmental Biology

CMF stimulates gene expression in parallel with PSF, and both signals potentiate cAMP signaling by inducing genes involved in cAMP synthesis and detection

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#Id: 3868

#Unit 5. Developmental Biology

In prespore cells, PKA activation occurs by signalling cascade that is activated by SDF-3, which triggers the synthesis of GABA

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#Id: 3869

#Unit 5. Developmental Biology

Newly activated genes are:

Adenylate cyclase A (ACA)
PKA
cAMP receptors (cARs)
Extracellular cAMP phosphodiesterase PdsA
An intracellular cAMP phosphodiesterase RegA

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#Id: 3870

#Unit 5. Developmental Biology

Secreted GABA then acts on prestalk cells to induce the cell-surface exposure of the serine protease domain of the ABC transporter TagC.

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#Id: 3871

#Unit 5. Developmental Biology

Once all proteins are functioning, a few starving cells start to emit cAMP pulses.