The catalytic site of chymotrypsin contains an interior aspartic acid hydrogen-bonded to a histidine which in its turn is hydrogen-bonded to a serine. Polarization of the system due to the buried ...

This latter modification lowered the catalytic efficiency of the enzyme by a factor of ... These two protein-preparations were subjected to chymotrypsin digestion, and resulting peptides were analyzed ...

Throughout the conjugation phase, the substrate protein is tagged by the covalent attachment of multiple ubiquitin molecules, thereafter, 26S proteasome (composed of the catalytic 20S ... mainly ...

Department of Chemistry and Biochemistry, University of California, San Diego, La Jolla, California 92093-0309, United States Program in Materials Science and Engineering, University of California, ...

Center of Single-Molecule Sciences, Institute of Modern Optics, Frontiers Science Center for New Organic Matter, Tianjin Key Laboratory of Micro-Scale Optical Information Science and Technology, ...