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Cycle Sequencing Reaction for PCR Template
template x1 µl <200 bp 20 ng
200-300 bp 50 ng
>300 bp 90 ng
BigDye Terminator Mix 2 µl
Sequencing Buffer 2 µl
primer (10 µM) 2 µl (20 pmol)
water x2 µl
Total volume 10 µl


The above guidelines are from the manufacturer.

In actual practice, using an aliquot

from your cleaned PCR reaction usually works fine.

There is no need to dilute the sample further.

1 µl of BigDye is more than adequate for each reaction.

Adjust the volume with water.


Cycle Sequencing Temperature Profile for PCR templates
repeat the following for 25 cycles
96 °C 10 sec
50 °C 5 sec (50 °C -58 °C depending on your primer's Tm)
60 °C 4 min
rapid thermal ramp to
4 °C \infty\,



primers the core provides:

M13F primer: -21 M13F : TGT AAA ACG ACG GCC AGT

M13 R primer: -28 M13R : AGG AAA CAG CTA TGA CCA T

T7 primer: TAA TAC GAC TCA CTA TAG GG

T3 primer: ATT AAC CCT CAC TAA AGG GA

SP6 primer: ATT TAG GTG ACA CTA TAG

BGHR primer: TAG AAG GCA CAG TCG AGG

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