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Old 11-26-2013, 08:36 PM   #1
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Location: Canada

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Default ChIP-Seq library prep kit, Illumina vs Kapa

We are sending ChIP samples for sequencing on a HiSeq 2500. We sent some to a facility a while ago and they used an Illumina kit for library prep. Now we are planning to switch to a new facility for various reasons including cheaper prices and they use a KAPA library prep kit. We want to repeat the original experiment to have n=2. Will there be a problem, or any kind of bias, or anything else we should worry about with one set being prepared with the Kapa kit and the other with the Illumina kit? Also, are these Kapa kits of comparable quality to the Illumina kits?
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Old 11-28-2013, 02:25 AM   #2
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If the libraries are constructed using the same adapter stocks, and amplification is done using the same polymerase, the results should be comparable;
Although the % of input DNA converted to adapter-ligated molecules may differ slightly between the kits, this will be rectified in the amp. However, if different enzymes are used for the enrichment, the enzyme which shows the most bias will produce higher duplication rates i.e. you will have more copies (duplicates) of the "easy" fragments, and fewer duplicates of the "difficult" molecules.
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illumina, kapa, library preparation

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