Amino Acid pK Values --- peptides and proteins are polyionic species defined by their composition of ionizable groups. Many authors have given sets of intrinsic pK values for the ionizable groups commonly found in proteins (α carboxyl group, apartic acid, glutamic acid, histidine, α amino group, cysteine, tyrosine, lysine and arginine). These values, in both human and machine readable forms, with references, are cataloged here. The pK sets are based on the study of free amino acids, small molecules, short peptides, folded proteins or combinations of these molecules.

MolScript Visual Tutorial --- the MolScript Visual Tutorial provides an overview of some of the basic paradigms and syntax of MolScript plot construction. MolScript commands are presented with their corresponding output images to reinforce the connection between command and output. The concepts of view and color, along with basic program mechanics, are covered. The MolScript Visual Tutorial was hosted at pauling.tamu.edu from 1996-2001 and science.gcc.edu from 2001-2013.

The Professor Page --- details my official academic description, interests and activities.

Urea Concentration Calculator --- the Urea Concentration Calculator is an Android app for the calculation of urea concentration in aqueous solution using the method of refractive index. The Urea Concentration Calculator is available in both the Google Play Store and the Nokia X store.