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Many aspects of the physical principles governing protein folding in vitro have been elucidated in the past decades. At the same time, a large number of cellular components involved in protein folding in vivo have been identified. But our mechanistic understanding of how these cellular components affect the energy landscape of the folding process has remained very limited, largely due to a lack of ...

...and R17) appear to have rough energy landscapes, whereas the fast folding domain R15 has a smooth energy landscape. By means of a novel, single-molecule spectroscopic technique developed by Prof. Benjamin Schuler at the Department of Biochemistry of the University of Zurich, I want to test this hypothesis, investigating directly the energy landscape of these homologous spectrin domains, quantifyin ...