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Fluorescent principle. Fluorescent microscope DAPI.

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Presentation on theme: "Fluorescent principle. Fluorescent microscope DAPI."— Presentation transcript:

1 Fluorescent principle

2 Fluorescent microscope

3 DAPI

4 FITC

5 Alexa 488

6 Tetramethylrhodamine/TRITC

7 Rhodamin

8 Rhodamin Red-X

9 Alexa 568

10 Alexa 647

11 Texas-Red and Texas-Red-X

12 Alexa 594

13 Cy-Series

14 GFP and GFPuv

15 E-GFP's and DsRed

16 Table of Fluorescent Proteins

17 What is green fluorescent protein (GFP) ? GFP is a 238-amino acid protein originally isolated from the bioluminescent jellyfish Aequoria victoria Can be expressed in any organism without additional cofactors

18 Structurally, GFP represents a new motif which has been named the “β-can” The “can” consists of 11 β-strands and a central α-helix Structure of GFP

19 GFP-Fluorophore Fluorescence is mediated by a fluorophore located at the center of the protein

20 The fluorophore is derived from the tripeptide -Ser 65 -Tyr 66 - Gly 67 - Formation of the fluorophore occurs in an autocatalytic manner Structure of the GFP-fluorophore

21 Light sources for Fluorescence

22 Filtersets and GFP's

23 Quantum efficiency of Chip

24 New Filterset

25 New Filterset-other flourochromes

26 Old Filtersets

27 Old filtersets- other flurochromes

28 Antibodies used for fluorescence

29 Laser and Fluorochromes


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