All Are Correct Statements Regarding the Protein Degradation Process Involving

question 9

Multiple Choice

All are correct statements regarding the protein degradation process involving ubiquitin EXCEPT:

• A) The modified protein is degraded by an ATP-dependent protease complex.
• B) The ubiquitin binding to the protein to be degraded leads to a novel branched protein.
• C) The ubiquitin is covalently attached to a cysteine residue in the protein to be degraded.
• D) Three additional proteins (E₁, E₂, and E₃) are involved in the ligation of ubiquitin to the protein.
• E) Ubiquitin is a highly conserved protein.

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Definitions:

Parasagittal

Referring to any plane or section parallel to the sagittal plane, which divides the body into left and right portions.

Coronal

Referring to a plane or section that divides the body into front and back portions.

Molecule

The smallest physical unit of an element or compound, consisting of one or more atoms bonded together.

Mitochondrion

A cellular organelle involved in energy production, critical for ATP synthesis through the process of oxidative phosphorylation.