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Characteristics of Thermophilic DNA Polymerases

 

  Vent Vent (exo-) Deep
Vent
Deep
Vent
(exo-)
Taq 9°Nm Phusion DyNA-
zyme
EXT
DyNA-
zymeII
Hot Start
Exonuclease Activities
3'—>5' proofreading
exonuclease
yes no yes no no 1-5% yes yes no
5'—>3' exonuclease
activity
no no no no yes no no yes yes
Thermal Stability
Half life at 95°C 6.7 hours 6.7 hours 23 hours 23 hours 0.9 hours 6.7 hours >6hours
at 96°C
3.5 hours
at 96°C
0.9 hours
Half life at 100°C 1.8 hours 1.8 hours 8 hours 8 hours <0.1 hours 1.8 hours 2 hours
at 98°C
  <0.1 hours
Primer Extension Characteristics
Units/100 µl
Primer Extension Rxn
1-2 units 2-4 units 1-2 units 2-4 units 2-5 units 1-2 units 1-2 units 1-4 units 1-4 units
Error Rate
(x10-6 base insertions)
57 190 ~20 ~190 285 in prograss .44    
Resulting DNA Ends blunt ends 3´ A blunt ends 3´ A 3´ A 3´ A
blunt
blunt 3´ A
blunt
3´ A
Strand Displacement yes;
temp.
dependent
yes;
temp.
dependent
yes;
temp.
dependent
yes;
temp.
dependent
no

yes

no yes;
temp.
dependent
no
Longest Primer
Extension to Date
13.2 kb 15.0 kb 14.0 kb 15.0 kb 8.1 kb 14.0 kb 37 kb 40 kb 3 kb