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BIO NMDCAT Conjugated molecules
nmdcat.online July 3, 2026

89. During the assembly of N-linked glycoproteins, the core oligosaccharide structure (Glc3​Man9​GlcNAc2​) is not built directly on the protein; instead, it is pre-assembled on a specialized lipid carrier molecule located in the ER membrane called

A. Cholesterol ester
B. Dolichol phosphate
✓
C. Sphingomyelin
D. Palmitic acid

📝 Explanation

Dolichol phosphate is a long, polyisoprenoid lipid molecule embedded in the ER membrane that serves as the membrane anchor for building the core glycan.

📖 Additional Information

  • Cholesterol ester
  • Dolichol phosphate
  • Sphingomyelin
  • Palmitic acid

Dolichol phosphate is a long, polyisoprenoid lipid molecule embedded in the ER membrane that serves as the membrane anchor for building the core glycan.

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