The HIV capsid protein plays a critical role in the virus' life cycle. Mizzou researchers recently developed the most complete model yet of this vital protein. HIV, or human immunodeficiency virus, is the retrovirus that leads to acquired immunodeficiency syndrome or AIDS. Globally, about 35 million people are living with HIV, which constantly adapts and mutates creating challenges for researchers. Now, scientists at the University of Missouri are gaining a clearer idea of what a key protein in HIV looks like, which will help explain its vital role in the virus' life cycle. Armed with this clearer image of the protein, researchers hope to gain a better understanding of how the body can combat the virus with the ultimate aim of producing new and more effective antiviral drugs.