Local admission , application code 9371 - - Master`s level singular course.
Admission requires a Bachelor`s degree (180 ECTS) or equivalent qualification, with a major in biology or chemistry of minimum 80 ECTS.
The course will be arranged with a maximum of 10 and minimum of 3 students.
Membrane proteins are responsible for most communications between cells or cellular compartments. They ensure the passage of ions, metabolites or other molecules and permit signaling. They are involved in many fundamental processes (neurotransmission, bioenergetics, cell development and many others). Their mechanisms of action rely on minute atomic properties as well as on large conformational changes occurring within their structures. However, in contrast to soluble proteins, the function of a membrane protein is also strongly dependent on the properties of the lipidic membrane in which the protein is embedded. Because of the essential roles of membrane proteins in most fundamental biological processes, they constitute major drug targets, and it is estimated that nearly 60% of the currently approved drugs target membrane proteins. The course is an introduction to biological membranes. Students will learn about the composition of these membranes, lipids and proteins, the behavior of lipids and their phase diagrams, the role of proteins and the different types of functions they achieve. The course will give a complete overview from genes (and how to recognize genes encoding membrane proteins) to the synthesis and insertion pathways of membrane proteins to their target membrane. The courses will be of general interest to biology or chemistry students, with a particular focus on membrane processes deciphered at the molecular level. The course will also bring insights into biophysics of proteins. The course is held for 2 weeks and contains 14 lectures and 5 days in the lab.
Lectures are grouped in 4 parts: 1) Lipids and Membranes (4 lectures) Lipids and Biomembranes: definition of different classes of lipids, different phases formed by lipids in water Properties of biological membranes: lipid composition and membrane proteins Examples of different membranes in eukaryotic cells (specific lipids, ratio between lipids and proteins) Lipids of organisms living under extreme conditions (low temperature, high pressure) how to maintain the fluid phase 2) Membrane proteins in vivo and main biological functions (5 lectures) Finding membrane protein encoding genes within genomes, TM predictions, Topologies of membrane proteins Synthesis and transport to membranes Main functional classes: Transporters, Receptors, Ion channels, Enzymes Protein structures and their implications in function and dynamics 3) Methods for studying membranes and membrane proteins: biochemistry, structural biology and biophysics (4 lectures) Biochemistry of membrane proteins: Solubilization, purification, crystallization Properties and role of detergents and surfactants Liposomes and functional assays Biophysical methods to study membranes Single molecule fluorescence to understand membrane proteins in cells (dynamics, segregation, oligomerization) 4) Membrane proteins and drug design (1 lecture) Which targets? Identification of new hits Strategy for rational drug design
Lab exercises will be based on AcrB a multidrug transporter from E. coli, and will comprise: 1) Membrane preparation starting from cells overexpressing AcrB 2) Solubilization of membranes, purification of AcrB with affinity columns, test of a few detergents 3) Characterization of the purified protein,SDS-Page, Western Blot, Thermal stability 4) Crystallization of AcrB 5) Reconstitution into liposomes, testing protein incorporation by sucrose gradient and identification of the fractions
The student will get
Four hours written exam approximately 2 weeks after the course.
The assessment of the final exam will be pass or fail.
Coursework requirements: Admission to the examination requires that a minimum of 80% of the theoretical and practical parts of the course has been completed and that lab work has been reported satisfactorily.
There will be a re-sit examination for students that did not pass the previous ordinary examination.