My PCR-free libraries do not look as expected on the Bioanalyzer. How should I QC PCR-free libraries?

Illumina sequencing libraries are usually generated with Y-adapters. These are partly single-stranded and partly double stranded. A PCR-free library will thus still contain partly single-stranded regions.  These single-stranded regions can lead to several types of Bioanalyzer artifacts.  Most commonly the

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My libraries show peaks larger than expected. Can I still sequence these PCR-bubbles?

PCR amplified sequencing libraries frequently display library molecules seemingly about twice the excepted size or even bigger.  In most cases, this phenomenon is caused by over-amplification of the libraries.  These PCR artifacts do occur in cases the PCR reactions run

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How should I prepare and sequence samples for ChIP-seq?

If we prepare the sequencing libraries we require ChIP-seq DNA samples to be submitted after reversal of the cross-linking. Ideally, the fragment lengths should be between 100 and 300 bp, and preferably under 500 bp. The former will result in

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How do I pool sequencing libraries? Can you pool them for me?

If you have access to fluorometric DNA quantification and a Bioanalyzer (or equivalent), library pooling is not difficult. We offer the pooling of sequencing libraries for a small fee. For sequencing libraries generated by the Core, pooling is included in the

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How many indexes are available for my libraries?

We have currently 96 indices are available and can pool 96 RNA-seq or genomic sequencing libraries. Bioo Scientific offers NEXTflex barocde sets allowing the pooling of up to 384 libraries. If you are planning to use homebrew versions of indices please consult with us

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What are the sample requirements for DNA and RNA samples or for sequencing libraries ?

Quality and quantity of DNA and RNA is critical for high quality sequencing output. Please make sure your DNA is not degraded and is free of RNA contamination. RNA samples should always be assessed on the bioanalyzer for the absence

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