Procathepsin B Is a Lysosomal Protease That Is First Translated

question 21

Multiple Choice

Procathepsin B is a lysosomal protease that is first translated as a proenzyme.On autocleavage it is fully activated.Procathepsin B is

• A) a zymogen.
• B) in the T state after autocleavage.
• C) an allosteric enzyme.
• D) inactive at low pH.

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Definitions:

Maturity at Issue

The predetermined date when a financial instrument, such as a bond, will come due and the principal is to be paid back to investors.

Default Risk

The potential risk that an issuer of a bond or other debt security will be unable to make principal and interest payments when due.

Collateral Trust Bond

A type of bond that is secured by a pledge of collateral, typically securities, placed under the trust of a third party.

Securities

Financial instruments representing ownership (stocks), a debt agreement (bonds), or rights to ownership (derivatives) that can be bought and sold in financial markets.