Which of the following statements concerning sialic acid residues on glycoproteins is true?
A)Sialic residues on erythrocytes are recognized by lectins,leading to removal of the erythrocytes.
B)Sialic residues on ceruloplasmin are recognized by lectins,leading to removal of ceruloplasmin.
C)Sialic residues are removed by neuraminidases.
D)The anti-viral drug oseltamavir accelerates the removal of sialic acid residues.
E)Both A and B above

Question

Quizplus · Accepted Answer

Sialic residues are removed by neuraminidases. Lectins do recognize sialic residues on erythrocytes and other cells, but this does not lead to removal of the cells. The anti-viral drug oseltamavir inhibits neuraminidase activity and thus slows down the removal of sialic acid residues. Option A and B are incorrect.

Which of the Following Statements Concerning Sialic Acid Residues on Glycoproteins