SubjectsSubjects(version: 945)
Course, academic year 2023/2024
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Methods based on fluorescence of single molecules - MC260P135
Title: Metody založené na fluorescenci jednotlivých molekul
Czech title: Metody založené na fluorescenci jednotlivých molekul
Guaranteed by: Department of Physical and Macromolecular Chemistry (31-260)
Faculty: Faculty of Science
Actual: from 2019
Semester: summer
E-Credits: 3
Examination process: summer s.:
Hours per week, examination: summer s.:2/0, Ex [HT]
Capacity: unlimited
Min. number of students: unlimited
4EU+: no
Virtual mobility / capacity: no
State of the course: taught
Language: Czech
Note: enabled for web enrollment
Guarantor: doc. RNDr. Radek Šachl, Ph.D.
Teacher(s): doc. RNDr. Radek Šachl, Ph.D.
Annotation -
Last update: doc. RNDr. Iva Zusková, CSc. (23.05.2019)
Single molecule fluorescence spectroscopy has recently experienced unprecedented rapid development
and has become one of the indispensable methods in biophysics. The aim of this course is to make
students familiar with this field. Emphasis is placed on understanding the physico-chemical principles on
which these methods are based. The usefulness of these fluorescence techniques is demonstrated on many
practical examples from the field of biophysics.
Literature -
Last update: doc. RNDr. Radek Šachl, Ph.D. (24.05.2019)

1.  J. R. Lakowicz, Principles of fluorescence spectroscopy, Springer, 3rd edn., 2006.

2.  B. Valeur, Molecular Fluorescence Principles and Applications, Wiley-VCH Verlag GmbH, New York, 2001.

Requirements to the exam -
Last update: doc. RNDr. Iva Zusková, CSc. (23.05.2019)

Oral exam covering the sylabus

Syllabus -
Last update: doc. RNDr. Iva Zusková, CSc. (23.05.2019)

1) Introduction into fluorescence: Jablonski diagram; absorption and emission spectra; fluorescent
probes; kinetics of fluorescence deexcitation; fluorescence decay; average fluorescence lifetime;
quantum yield of fluorescence; fluorescence quenching;
2) Detection of individual molecules: principal differences between a classical fluorescence
measurements from a large ensemble of molecules and a single molecule fluorescence measurement;
photophysics of individual molecules; methods of fluorescence detection; confocal versus wide-filed
microscope; total internal reflection fluorescence (TIRF); detection of different protein configurations
by sm-FRET; rotations and reorientations of individual molecules;

3) Single particle tracking (SPT): diffusion in two dimensions; random walk; MSD diagrams; different
modes of diffusion: free, hindered and hop-diffusion. Methods of SPT measurement; Derived
Techniques: brightness analysis and TOCCSL (thinning out clusters while conserving stoichiometry
of labeling); colocalization analysis
4) Fluorescence correlation and cross-correlation spectroscopy (FCS and FCCS) I: theory of FCS:
autocorrelation and cross-correlation functions; translational diffusion in FCS; inter-system crossing
in FCS;
5) FCS and FCCS II: FCS in two dimensions: applications to lipid membranes; FLCS technique;
practical applications of FCS: reaction kinetics, protein binding to the membrane, clustering of
proteins on the membrane;
6) PCH - photon counting histogram: principles and applications in biophysics; shot noise; Number and
brightness method (N&B); fluorescence anti-bunching;
7) Fluorescence depolarization: definition of anisotropy; measurement of anisotropy; excitation and
emission anisotropic spectra; causes of fluorescence depolarization; kinetics of fluorescence
depolarization; rotational diffusion and its impact on fluorescent anisotropy;
8) Förster resonance energy transfer (hetero-FRET): FRET within one donor-acceptor pair; migration of
energy between two donors (homo-FRET); kinetics of fluorescence deexcitation and depolarization;
single molecule FRET
9) Förster resonance energy transfer and migration in the field of many donors and acceptors:
fluorescence deexcitation kinetics in the field of many acceptors, FRET on lipid bilayer,
determination of the thickness of a lipid bilayer; MC-FRET; detection of lipid nanodomains;
oligomerization of proteins on the membrane - quantification using homo- and hetero-FRET
10) Raster Image Correlation Spectroscopy (RICS) and Imaging-FCS: Principles and practical
applications

 
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