Molecules such as FAD (flavin adenine dinucleotide), NADH and NADþ are important coenzymes of proteins involved in electron transfer reactions (RedOx reactions). They can be conveniently assayed by using their UV/Vis absorption: 438 nm (FAD), 340 nm (NADH) and 260 nm (NADþ).

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#Id: 9050

#Unit 4. Cell Communication and Cell Signaling

Member of family A of GPCRs -β-adrenergic receptors

Member of family B of GPCRs -glucagon receptor 

Member of family C of GPCRs -glutamate receptor

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#Id: 9051

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 9052

#Unit 4. Cell Communication and Cell Signaling

TLS Online TPP Program

#Id: 9053

#Unit 4. Cell Communication and Cell Signaling

Binding of cAMP by an R subunit of PKA occurs in a cooperative fashion; i.e., binding of the first cAMP molecule to CNB-B lowers the Kd for binding of the second cAMP to CNB-A.

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#Id: 9054

#Unit 4. Cell Communication and Cell Signaling

The activated β2-adrenergic receptor induces GDP-->GTP exchange on a stimulatory G protein (Gs).

TLS Online TPP Program

#Id: 9055

#Unit 4. Cell Communication and Cell Signaling