- BS, University of the Philippines
- PhD, University of Utah
- Assistant Professor, Molecular Physiology and Biophysics
Structure and assembly of HIV
Structural biology of the innate immune system
Our long-term goals are to understand how proteins interact with each other and how these interactions underlie biological processes. We are particularly interested in molecular and structural switches that control how proteins form high-order quaternary interactions, or macromolecular assemblies.
In one set of projects, we are studying the transformation between the immature and mature forms of orthoretroviruses, with emphasis on the Human Immunodeficiency Virus (collaboration with Barbie Ganser-Pornillos and Mark Yeager, Department of Molecular Physiology and Biological Physics) and Rous Sarcoma Virus (collaboration with Volker Vogt, Cornell University). We are also applying the assembly principles that we learn from orthoretroviral capsids on the design of nanoparticles that could be used in imaging of cancer cells in situ and in targeted drug delivery (collaboration with Kim Kelly, Department of Biomolecular Engineering). In a second set of projects, we are studying protein complexes that mediate anti-viral responses as part of the cellular innate immune system.
We use X-ray crystallography and electron cryomicroscopy to determine the structures of individual proteins, protein-protein complexes, and assemblies. To test mechanistic models that arise from these structures, we use biochemical approaches to reconstitute viral and cellular assembly pathways in vitro.
- Pornillos O, Ganser-Pornillos B, Kelly B, Hua Y, Whitby F, Stout C, Sundquist W, Hill C, Yeager M. X-ray structures of the hexameric building block of the HIV capsid. Cell. 2009;137(7): 1282-92. PMID: 19523676 | PMCID: PMC2840706
- Ganser-Pornillos B, Chandrasekaran V, Pornillos O, Sodroski J, Sundquist W, Yeager M. Hexagonal assembly of a restricting TRIM5alpha protein. Proceedings of the National Academy of Sciences of the United States of America. 2010;108(2): 534-9. PMID: 21187419 | PMCID: PMC3021009
- Pornillos O, Ganser-Pornillos B, Banumathi S, Hua Y, Yeager M. Disulfide bond stabilization of the hexameric capsomer of human immunodeficiency virus. Journal of molecular biology. 2010;401(5): 985-95. PMID: 20600115 | PMCID: PMC3050670
- Pornillos O, Ganser-Pornillos B, Yeager M. Atomic-level modelling of the HIV capsid. Nature. 2011;469(7330): 424-7. PMID: 21248851 | PMCID: PMC3075868
- Ganser-Pornillos B, Yeager M, Pornillos O. Assembly and architecture of HIV. Advances in experimental medicine and biology. 2012;726 441-65. PMID: 22297526