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BIO NMDCAT Conjugated molecules
nmdcat.online July 3, 2026

93. An analytical study of the proteoglycan aggrecan reveals that hundreds of individual aggrecan monomers are bound non-covalently to a single, long extracellular backbone molecule via specialized link proteins. This central structural backbone molecule is

A. Collagen type II
B. Hyaluronic acid (hyaluronan)
✓
C. Fibronectin
D. Chondroitin sulfate

📝 Explanation

Hyaluronic acid is a massive, unsulfated glycosaminoglycan that serves as the central structural spine for large extracellular proteoglycan complexes.

📖 Additional Information

  • Collagen type II
  • Hyaluronic acid (hyaluronan)
  • Fibronectin
  • Chondroitin sulfate

Hyaluronic acid is a massive, unsulfated glycosaminoglycan that serves as the central structural spine for large extracellular proteoglycan complexes.

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