Wilhelm Cruz

An introduction to biological molecules and biochemical strategies employed by the three domains of life. The flow of genetic information within cells is discussed in the context of cellular structure, organization, and function. Investigation and manipulation of genetic information by molecular genetic technologies, such as recombinant DNA, forms the final phase of the course. Labs reinforce concepts from lectures and explore common laboratory techniques and computer-based resources.

A broad overview of genetics, including Mendelian assortment, linkage, chromosomal aberrations, variations in chromosome number, mutation, developmental genetics, quantitative genetics, population genetics, mechanisms of evolution, and phylogenetics.

This laboratory class is structured around a biochemical question of relevance to the research community. Students will design and generate mutants of an enzyme to test hypotheses about its mechanism and kinetics. The course consists of three sections: molecular biology, protein biochemistry, and structural biology. In the first section, students the learn the principles of DNA manipulation, cloning, mutagenesis, and DNA sequencing and apply them to design and generate mutant constructs of the protein of interest. In the second section, students learn the principles of heterologous expression of proteins in bacteria, protein purification, SDS-PAGE, protein quantification, and kinetic analysis of enzyme activity. These methods are applied to test the students' hypotheses by assaying the activity of their mutant enzymes. The final section of the course introduces students to concepts of structural biology including protein crystallization, x-ray diffraction, and computer modeling of protein structures.