Viral proteases: Structure, mechanism and inhibition

Area of Science:

• Virology
• Biochemistry
• Drug Discovery

Background:

• Viral proteases are crucial enzymes with diverse structures and functions.
• Viruses like HIV-1, HCV, HTLV-1, flaviviruses, enteroviruses, and coronaviruses utilize proteases for replication.
• Protease inhibitors are established therapeutics for HIV-1 and HCV, with others under development.

Purpose of the Study:

• To provide a comprehensive overview of viral protease structure, mechanism, substrate recognition, and inhibition.
• To highlight recent advancements in understanding viral protease substrate specificity and resistance mechanisms.
• To discuss the potential of viral proteases as therapeutic targets for antiviral drug development.

Main Methods:

• Review of existing literature on viral proteases.
• Analysis of structural and mechanistic data for key viral proteases.
• Examination of current drug development strategies and challenges.

Main Results:

• Established success in targeting HIV-1 and HCV proteases with potent drugs.
• Identification of HTLV-1 and other viral proteases as emerging therapeutic targets.
• Advances in understanding substrate recognition and resistance are key for novel inhibitor design.

Conclusions:

• Viral proteases represent critical targets for antiviral therapies.
• Understanding protease diversity and resistance is essential for developing next-generation antivirals.
• Continued research into viral protease inhibition holds promise for combating viral infections.