University of Puerto Rico at Río Piedras

Human gut microbiome viewed across age and geography

A semi‐empirical <scp>MO</scp> theory for ionization potentials and electron affinities

Abstract A method for calculating the vertical ionization potentials and electron affinities according to their fundamental definition as differences between energies of the sin...

Crystal Structures of the GCaMP Calcium Sensor Reveal the Mechanism of Fluorescence Signal Change and Aid Rational Design

The genetically encoded calcium indicator GCaMP2 shows promise for neural network activity imaging, but is currently limited by low signal-to-noise ratio. We describe x-ray crys...

Selection-Driven Evolution of Emergent Dengue Virus

In the last four decades the incidence of dengue fever has increased 30-fold worldwide, and over half the world's population is now threatened with infection from one or more of...