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Yupeng Tu, Biochemistry and Biophysics, Brandeis University. Yupeng does research in structural Biology, Biochemistry and Molecular Biology. Their most recent publication is 'Crystal Structures of Cystathionine β-Synthase from Saccharomyces cerevisiae: One Enzymatic Step at a Time'.
In photodynamic therapy (PDT), cells are impregnated with a photosensitizing agent that is activated by light irradiation, thereby photochemically generating reactive oxygen species (ROS). The amounts of ROS produced depends on the PDT dose and the nature of the photosensitizer. Although high levels of ROS are cytotoxic, at physiological levels the...
Parkinson's disease (PD), primarily caused by selective degeneration of midbrain dopamine (mDA) neurons, is the most prevalent movement disorder, affecting 1-2% of the global population over the age of 65. Currently available pharmacological treatments are largely symptomatic and lose their efficacy over time with accompanying severe side effects s...
Polarization-sensitive optical coherence tomography (PS-OCT) is an augmented form of OCT, providing 3D images of both tissue structure and polarization properties. We developed a new method of polarization-sensitive optical frequency domain imaging (PS-OFDI), which is based on a wavelength-swept source. In this method the sample was illuminated wit...
Photodynamic therapy (PDT) is a light activated chemotherapy that is dependent on three parameters: photosensitizer (PS) concentration; oxygen concentration; and light dosage. Due to highly variable treatment response, the development of an accurate dosimeter to optimize PDT treatment outcome is an important requirement for practical applications....
The chemical properties of zinc make it an ideal metal to study the role of coordination strain in enzymatic rate enhancement. The zinc ion and the protein residues that are bound directly to the zinc ion represent a functional charge/dipole complex, and polarization of this complex, which translates to coordination distortion, may tune electrophil...
Shigella flexneri, a gram-negative enteric pathogen, is unusual in that it contains two nonredundant paralogous genes that encode the myristoyl transferase MsbB (LpxM) that catalyzes the final step in the synthesis of the lipid A moiety of lipopolysaccharide. MsbB1 is encoded on the chromosome, and MsbB2 is encoded on the large virulence plasmid pr...