Discussion
Which of the following component binds to protein and guides for its degradation ?
Answer: A
The component is ubiquitin.
Ubiquitin is a small 76-amino-acid protein. A cascade of E1, E2 and E3 enzymes attaches it to lysine residues of the target, and a chain of ubiquitins marks the protein for destruction by the 26S proteasome.
Methylation, acetylation and phosphorylation are chemical modifications, not components that bind proteins. They regulate activity, chromatin structure and signalling; they can influence stability indirectly, but none is the tag that guides a protein to degradation.
No comment is present. Be the first to comment.
Loading…
Post your comment
Please log in or register to post a comment.
Examination Categories
- SSC Exams
- Banking Exams
- Teaching Exams
- Civil Services Exams
- Railways Exams
- Engineering Recruitment Exams
- Defence Exams
- State Government Exams
- Police Exams
- Insurance Exams
- Nursing Exams
- Other Government Exams
- NRA CET
- PG Entrance Exams
- Campus Placement
- MBA Entrance Exams
- CUET and UG Entrance
- Judiciary Exams
- Regulatory Body Exams
- Software Development