Which Process Is NOT an Event in the Signaling Pathway

question 19

Multiple Choice

Which process is NOT an event in the signaling pathway from insulin to glycogen synthase kinase 3 (GSK3) inactivation?

• A) insulin binding to a tyrosine kinase receptor
• B) activation of insulin receptor substrate-1 (IRS-1) by phosphorylation
• C) phosphatidylinositol 3-kinase associating with IRS-1 generates phosphatidylinositol 3,4,5-triphosphate
• D) protein kinase B being activated by a protein kinase known as PDK-1
• E) protein kinase B phosphorylating GSK3, resulting in its activation

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