The
HIV capsid encloses the viral RNA genome and facilitates viral replication. Sundquist and colleagues defined the unusual fullerene cone architecture of the viral capsid and identified essential functions of the capsid in HIV-1 replication, which helped enable development of the potent and long-lasting
Lenacapavir capsid inhibitor by
Gilead Sciences. The Sundquist lab also reconstituted capsid-dependent HIV reverse transcription and integration in a cell-free system. To spread infection,
viruses must shed from infected cells. Sundquist and colleagues found that retroviruses like HIV exit cells using the host
ESCRT pathway. They also used this information to design new proteins that can assemble into nanocages, exit producer cells, and carry cargoes into new target cells.
Cytokinesis separates one replicating cell into two daughter cells. Sundquist's lab studies this process by determining the structures and functions of factors that act to complete and regulate cytokinesis. == Honors and awards ==