Binding of intrinsic factor with vitamin B₁₂ triggers the receptor-mediated endocytosis of this complex to facilitate absorption.

Question

Quizplus · Accepted Answer

This statement is true. Intrinsic factor is a glycoprotein produced by the parietal cells of the stomach that binds with vitamin B12 to form a complex that can be absorbed in the small intestine. The receptor-mediated endocytosis of this complex is facilitated by cubilin, a protein found in the brush border membrane of the small intestine cells.

Binding of Intrinsic Factor with Vitamin B12 Triggers the Receptor-Mediated

Binding of Intrinsic Factor with Vitamin B₁₂ Triggers the Receptor-Mediated