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VCE Stuff => VCE Science => VCE Mathematics/Science/Technology => VCE Subjects + Help => VCE Biology => Topic started by: sarahmanyok on April 06, 2017, 04:11:05 pm

Title: Signal Transduction
Post by: sarahmanyok on April 06, 2017, 04:11:05 pm

Can somebody Explain why each molecule in cAMP signal cascade is phosphorylated?

Title: Re: Signal Transduction
Post by: Deshouka on April 06, 2017, 06:26:06 pm

It's because cAMP activates cAMP-dependent protein kinase (also known as protein kinase A). Kinases are enzymes that catalyse the phosphoryl transfer from one molecule to another (usually from ATP). Phosphorylation changes the conformation of proteins and can either activate or deactivate them.
Hope I helped!