Which of the following factors gives the elastin molecule the ability to stretch and recoil?
Correct Answer: Cross-links between lysine residues
Description: Ans. B. Cross-links between lysine residuesElastin is an elastic protein found in lungs, dermis, large arteries, ligaments, vocal cords and the ligamentum flavum. Its ability to stretch is conferred by interchain crosslinks between lysine residues.Similar to collagen, elastin is synthesized in several steps. It begins as a large precursor molecule, tropoelastin. Tropoelastin is secreted into the extracellular matrix, where it interacts with Fibrillin-containing microfibril scaffolds to form elastic fibers. The lysine residues on separate elastin molecules interact in a process called desmosine cross-chain linking, providing elastin with its stretch.
Category:
Biochemistry
Get More
Subject Mock Tests
Practice with over 200,000 questions from various medical subjects and improve your knowledge.
Attempt a mock test nowMock Exam
Take an exam with 100 random questions selected from all subjects to test your knowledge.
Coming SoonGet More
Subject Mock Tests
Try practicing mock tests with over 200,000 questions from various medical subjects.
Attempt a mock test now