HIV-1 Capsid-SP1 in immature virus-like particles

Journal of the American Chemical Society
Helical Conformation in the CA-SP1 Junction of the Immature HIV-1 Lattice Determined from Solid-State NMR of Virus-like Particles.

The first 47 residues are the truncated MA domain, followed by CA, SP1, and NC. SP1 contains a T8C mutation.

Spherical assemblies of delta-MA-CA-SP1-NC formed without nucleic acid

Delaglio, Grzesiek, Vuister, Zhu, Pfeifer and Bax