Vent of Pfu - which is more HiFi ?

[kucera at neb.com]

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>Subject: Vent of Pfu - which is more HiFi ?
>Date: 6 Nov 92 05:34:06 GMT
>Nntp-Posting-Host: mve.microbiol.uwa.edu.au
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>Hi,
>
>Has anyone out there compared the thermostable polymerases Vent and Pfu ?
>Any comments you may have on the RELATIVE merits of one over the other would
>be appreciated (eg length of synthesis products, stability, etc)
>
>
>Thanks for your efforts
>
>
>Robert Coelen
>Dept of Microbiology
>University of western Australia
>
>
>
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We have compared the thermostabilities of Vent, Deep Vent and Pfu DNA
polymerases.  Assessing the remaining polymerase activity as a function of 
incubation time at 95 C-100 C, we find the Vent DNA polymerase has a half
life at 95 C of 6.7 hours and at 100 C of 1.8 hours.  The Deep Vent DNA
polymerase has a half life at 95 C of 23 hours and at 100 C of 8 hours.
When we test Pfu DNA polymerase side-by-side with Vent and Deep Vent, we
find its thermostability matches that of Deep Vent--not unexpected, since
they are different species, but are the same genus.

        We have a great deal of technical information on all our
thermophilic DNA polymerases available for the asking. Just give us a call!
 

Sincerely,
Rebecca Kucera
Product manager for Vent DNA polymerases
New England Biolabs
(1-800-632-5227)