Clontech PT3139-1 Benutzerhandbuch - Seite 6
Blättern Sie online oder laden Sie pdf Benutzerhandbuch für Laborausrüstung Clontech PT3139-1 herunter. Clontech PT3139-1 20 Seiten. Advantage-hf pcr kit
CLONTECH Laboratories, Inc.
I. Introduction continued
Automatic hot start with TaqStart Antibodies
Advantage-HF provides hot start PCR by including TaqStart
polymerase mix, eliminating the need for additional pipetting or handling steps.
"Hot start" refers to any method for assembling PCR reactions that keeps one or
more of the reaction components physically or functionally separate from the rest
of the components prior to the onset of thermal cycling. This prevents back-
ground due to low-level DNA synthesis from nonspecifically primed sites prior to
the onset of thermal cycling. The advantages of hot start PCR have been
demonstrated in many different applications. However, only CLONTECH's
Advantage Polymerase Mixes provide automatic hot start.
TaqStart is a neutralizing monoclonal antibody directed against Taq DNA
polymerase. TaqStart recognizes both native Taq and N-terminal deletions such
as KlenTaq-1. When premixed with the appropriate polymerase, the antibody
blocks polymerase activity during the set-up of the PCR reactions at ambient
temperatures. Polymerase activity is restored at the onset of thermal cycling
because the antibody is denatured by temperatures greater than 60°C. The loss
of inhibition is complete and irreversible, so the polymerase regains its full
enzymatic activity for PCR.
TaqStart-mediated hot start PCR has been shown to significantly improve the
efficiency and specificity of DNA amplifications (Kellogg et al ., 1994;
CLONTECHniques, April 1994). Antibody-mediated hot start with TaqStart has
been proven to be at least as effective as manual hot start (d'Aquila et al ., 1991)
or wax-bead-mediated hot start (Chou et al ., 1991). In particular, TaqStart
reduces or eliminates nonspecific amplification products and primer-dimer
artifacts. In some cases, specific products can only be obtained by using
TaqStart.
A PCR system for every application
The Advantage cDNA and Genomic PCR Kits, containing the Advantage cDNA
and Genomic Polymerase Mixes, respectively, are designed for high-efficiency,
long-distance PCR amplification and are the foundation of the Advantage PCR
Enzyme Systems ( CLONTECHniques , July 1995; Barnes, 1994). These versatile
kits are designed for high-performance amplification in the vast majority of PCR
applications (including all of our PCR-based kits) and have firmly established the
benefits of PCR enzyme mixes containing hot start antibodies. Our other Advan-
tage-based kits have been developed for certain specialized applications. The
Advantage-GC cDNA and Genomic PCR Kits and Mixes ( CLONTECHniques ,
January 1997) combine the high efficiency of the Advantage system with a novel
reagent, GC-Melt
cation of problematic GC-rich templates (up to 90% GC). As the newest addition
to the Advantage line, Advantage-HF allows a new level of fidelity, balanced by
the efficiency that is characteristic of Advantage.
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Protocol # PT3139-1
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Version # PR76834
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, and an optimized buffer containing DMSO to permit amplifi-
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Antibody in the