Integrative structural biochemistry

The botulinum neurotoxins are the most toxic substances known; they are one million times more toxic than the cobra toxin. In spite of their extreme toxicity there has been a rapid expansion of the medical applications for the botulinum neurotoxins. The toxins are studied using variety of methods, including X-ray crystallography and cryo-EM.
Evolution starts by the random and natural generation of point mutations in protein encoding genes. They can be silent and they can be loud and they are a natural consequence of replication in any organism where only favorable mutations are retained in the organism’s progeny. Depending on where these mutations are located in a protein’s three-dimensional structure they may lead to consequences for i.e. its folding, its activity, its intracellular interactions, its longevity in the cell and even a specific phenotype.
The function of a protein is tightly connected to its three-dimensional structure which can be determined using X-ray crystallography. In this course you will learn by doing.
You will learn how to determine a protein’s three-dimensional structure using X-ray crystallography structures from purified protein and subsequently explore how the protein’s property and function respond to point mutations.
The central focus is to understand how the detailed amino-acid interactions determine protein structural stability and binding. In this course you will be introduced to how theory, wet-labs and computing go hand-in-hand to solve real problems in protein chemistry.
In addition, application of basic chemical models and data quantification constitute a red thread throughout the teaching, and several common spectroscopic methods and experimental approaches are employed in depth.
Experimental results, progress and student conclusions will be presented/examined both in form of individual seminars and poster presentations.
The course deals with the structure and properties of proteins, with a focus on sequence content and the effect of mutations. During the course you will learn about the following:
- The ability for reductionist thinking and generalization
- Quantitative description
- Formulation and testing of hypotheses according to falsification
- Proficiency in using laboratory techniques for problem solving
- Proficiency in computer-based methods and bioinformatics.
Expected learning outcomes
After completing the course the student is expected to be able to:
- Explain the molecular principles behind the structure of proteins
- Describe entropy - enthalpy compensation in macromolecular systems and how it controls stability and structural properties
- explain mutation effects on protein stability and function, as well as the principles of structural evolution
- Formulate and test hypotheses about the structure, stability and function of proteins, as well as demonstrate proficiency in quantitative description and interpretation of experimental results
- Independently solve problems through the design of equilibrium experiments.
Modules
- Theory, 5 ECTS
- Laboratory exercises, 2.5 ECTS
Teaching Format
- Lectures
- Group projects
- Seminars
- Lab work
Assessment
Theory - through a written exam
Laboratory exercises - written and oral reports, mini conference presentation
Examiner
Ville Kaila
ville.kaila@dbb.su.se
Course Coordinator
Ville Kaila, email: ville.kaila@dbb.su.se
Chemistry Section & Student Affairs Office: chemistry@su.se





