Marnie
Frequent Contributor (5K+ posts)
Member # 773
posted
which has to be able to see insects (its food) in almost absolute darkness...
"In dark-adapted rod photoreceptors, PDE6 activity
***is inhibited by two identical PDE6G subunits***.
One PDE6G molecule is bound to PDE6B and one to PDE6A"
(I will take a guess that G = gamma, B = beta and A = alpha.)
Bold the following:
"PDE6 is turned off when transducin-α hydrolyzes bound GTP and releases PDE6G"
Then PDE6G binds to PDE6A and PDE6B.
Photon transfer triggers the G "helper" protein, transducin.
Which closes the Ca-Na "doors". Animation was linked.
End bold.
Adrenaline (epinephrine) increases PDE6G.
Any potential dangers of an "epi" pen?
"Adrenaline also inhibited prolactin release."
"Estrogen plays a role in regulating how many adrenaline receptors are present in the temperature control center of the brain.(My note = hypothalamus)
When estrogen *declines* there are more adrenaline receptors and the temperature control center becomes more sensitive to fluctuations in adrenaline levels." (My note = "hot flashes")
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