Amplification of DNA  

Yuichiroh Ikagawa

Published: 2021-10-22 DOI: 10.17504/protocols.io.bzbcp2iw

Abstract

Our project aims to quantify human fatigue through the quantification of the biomarker human herpesvirus6 using Cas12a, a protein that is fundamental and essential to our project. We ordered the synthesis of composite parts with affinity tags attached to Cas12a, but the sequence was too long to be synthesized as a single of dsDNA. To overcome this problem, we split the parts into three fragments and synthesized them. Here, an adaptor sequence was added to the 5' end by PCR to allow for later assembly.

Steps

1.

Thaw the DNA solution at room temperature, and KAPA HiFi HotStart ReadyMix (x2) on ice.

2.

Vortex the reagents, then centrifuge them briefly in a microcentrifuge.

3.

Mix the reagents according to the composition in the table below.

ABC
COMPONENTVOLUME (µl)CONCENTRATION
KAPA HiFi HotStart Ready Mix(x2)25×2
DNA Template1.01.0 µg/µl
Forward Primer2.50.5 µM
Reverse Primer2.50.5 µM
Nuclease Free Water19.0
Total Volume50.0
4.

For each template DNA, select the temperature setting of the thermal cycler listed in the table below.

4.1.

Vectors(pSB1C3 and pSB1A3)

ABCD
STEPTEMP (℃)TIMECYCLES
Initial Denature955 minutes
Denature9830 seconds30
Anealing6815 seconds
Extension721 minutes 30 seconds
Final Extension725 minutes
Hold4
4.2.

Cas12a fragments(1-3)

ABCD
STEPTEMP(℃)TIMECYCLES
Initial Denature955 minutes
Denature9830 seconds30
Anealing6515 seconds
Extension721 minute
Final Extension725 minutes
Hold4

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