Which of the following processes is a required step for some proteins before they attain functionality? A) Degradation to remove excess subunits B) Covalent modification, such as p... Which of the following processes is a required step for some proteins before they attain functionality? A) Degradation to remove excess subunits B) Covalent modification, such as phosphorylation C) Formation of a hairpin loop D) Active transport to the cytoplasm
Understand the Problem
The question is asking which of the listed processes is essential for the proper functioning of certain proteins, implying a need to identify functional modifications or processes related to protein activity.
Answer
Covalent modification, such as phosphorylation.
The final answer is Covalent modification, such as phosphorylation.
Answer for screen readers
The final answer is Covalent modification, such as phosphorylation.
More Information
Covalent modification, specifically phosphorylation, is a common post-translational modification that affects protein activity by changing the shape and charge of the protein, which can alter its function and interactions within the cell.
Tips
Commonly, this type of question confuses students who may mistake 'degradation' and 'transport' as modifications or processing steps required for functionality. However, phosphorylation is a well-known modification necessary for the function of many proteins.
Sources
- Targeting protein modifications in metabolic diseases - Nature - nature.com
- From RNA to Protein - Molecular Biology of the Cell - NCBI Bookshelf - ncbi.nlm.nih.gov
- Inwardly Rectifying Potassium Channels: Their Structure, Function ... - journals.physiology.org
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