Gcn4 Is a Protein Kinase That Can Phosphorylate and Inactivate

question 44

Multiple Choice

Gcn4 is a protein kinase that can phosphorylate and inactivate the initiation factor eIF2. The Gcn4 mRNA contains several short upstream open reading frames (uORFs) that negatively regulate its translation initiation. The phosphorylation of eIF2 by Gcn4, therefore, can control Gcn4 expression …

• A) in a negative feedback loop.
• B) in a positive feedback loop.
• C) in a feed-forward loop.

---

Definitions:

Credit Memo

A document issued to a buyer, reducing the amount they owe due to a return or rebate.

Chart of Accounts

A systematic list of all accounts used by an organization, essential for organizing financial information and preparing financial statements.

Merchandising Business

A commercial enterprise that purchases goods in a finished condition for the purpose of resale without further manufacturing.

Contra Accounts

Accounts used in the accounting ledger to reduce the value of a related account when the two are netted together.