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Incresing the sensitivity of measurement of the insulin secretion dynamics with SeTau-647

Due to SeTau-647 having a longer lifetime and higher brightness compared to the previously used Cy5 fluorophore, a 45% increase in the anisotropy range was observed with enhanced signal-to-noise ratio (S/N) of the measurements. This new system was tested by measuring glucose-stimulated insulin secretion from single and groups of murine and human islets. Mathematical derivations for immunoassay equilibrium equations are provided as well as a table containing the properties of SeTau-647 and Cy5. Adablah et al., Anal. Chem. 2020, 92, 12, 8464–8471.

Excitation Light Sources Characteristics
Product Number
(Specs Sheet)
Product Name
(Product Info)
Target Group 380 405 436 488 532 594 635 650 680 700 750 780 Medium λ abs
[nm]
ε
[M –1
cm–1]
λ em
[nm]
QY
[%]
FLT
[ns]
Buy
                   
K9-4119
K9-4119 new
SeTau-665-NHS
SeTau-665-NHS
NH2 PB 7.4 664 160000 712 53 3.1
K9-4148
K9-4148
SeTau-647-Maleimide
SeTau-647-Maleimide
SH PB 7.4 648 200000 692 45 3.2
K9-4149
K9-4149
SeTau-647-NHS
SeTau-647-NHS
NH2 PB 7.4 649 200000 695 61 3.2
K9-4169
K9-4169 new
SeTau-670-NHS
SeTau-670-NHS
NH2 PB 7.4 673 275000 694 36 1.6
K9-4179
K9-4179 new
SeTau-680-NHS
SeTau-680-NHS
NH2 PB 7.4 683 295000 705 58 2.9

 

 

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