This is a real-world medical entrance exam question, please give the true answer based on the question and selection. Topic name: Chemotherapy, Subject name: Pharmacology
Enfuviide belongs to the class of: 
Select and explain. 
A. Fusion inhibitors, B. Protease inhibitors, C. Gp 120 inhibitors, D. Nucleoride reverse transcriptase inhibitors
A: Fusion inhibitors
Answer: A: Fusion inhibitors 
Explanation: ENFUVIIDE: The HIV derived synthetic peptide acts by binding to HIV-1 envelope transmembrane glycoprotein which is involved in fusion of viral and cellular membranes. Fusion of the two membranes is thus prevented and entry of the virus into the cell is blocked. It is not active against HIV-2. ESSENTIALS OF MEDICAL PHARMACOLOGY K.D.TRIPATHI SEVENTH EDITION PAGE NO:811