Q. Your friend has now joined a lab that studies vesicle budding from the Golgi and has been given a cell line that does not form mature vesicles. He wants to begin designing some experiments but wasn’t listening carefully when he was told about the molecular defect of this cell line. He is too embarrassed to ask and come to you for help. He does recall that this cell line forms coated pits other than vesicle budding and the removal of coat proteins don’t happen. Which of the follow proteins might be lacking in this cell line?

(a) clathrin (b) Rab (c) dynamin (d) adaptin