6. class single molecule fluor part 2 Flashcards
Single molecule enzymatics
Single molecule enzymatics dynamics
Time dependent kcat
The lipase B from the yeast candida antarctica
Non fluorescent substrate conversion
Long observation time possible
Several conformations are involved
How many conformations are involved?
The ‘lazy’ enzyme
Size of the fluorogenic substrate
Size of the substrate
Single molecule enzymatics
Single molecule enzymatics
Phospholipases
Phospholipase A1 studied
Single molecule enzymatics
Single molecule enzymatics
first step
Single molecule enzymatics?
Water soluble perylenediimide dye (PDI)
Dual color excitation
Active PLA1 – High concentration
Active PLA1 – Low concentration
Active PLA1 vs inactive
Single enzyme trajectories
Image analysis
hetero vs Homogeneous track
Cummulative distribution functions
Enzyme mobility
Model of mode of operation