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Why are genotype calls not achieved for specific targets?

AMPSEQ-001
Sometimes, despite a successful primer design for a target, genotyping calls are not achieved for a specific target. This can be caused by several issues including poor primer design and issues with the synthesis of the primers. In addition, if genomic reference data for both parental strains is not provided for target primer design, some primer pairs might not work for all F1 samples. Missing genotypes are generally attributed to low depth. Certain targets cannot be amplified because of sample quality issues or unknown parental bias in the genomes. Our standard design process addresses the parental bias by avoiding primers on known variability in the genome. Known variation information can be provided to us in the target flanking sequences through the Data Submission form.

Have you produced proteins at scale?

COMCEL-008

Our customers have reported growth of ClearColi strains in a 5 litre fermenter and shown optical density levels in excess of 150, and that some defoaming agents (particularly silicone-based defoamers) are beneficial while other defoaming agents such as polypropylene glycol may inhibit cell growth.

Does Amp-Seq One provide data analysis software to generate genotype calls? 

AMPSEQKIT1
Biosearch Technologies provides an analysis pipeline (the BiosearchCaller software), compatible with the Amp-Seq One technology, to produce genotypes from the sequencing data. The software can be accessed via a cloud system and our technical team will support the deployment and initial setup.

How do I calculate transformation efficiency (TE)?

TE = (# colonies) / (µg DNA transformed) * (final transformation volume) / (volume plated) * dilution factor = cfu / µg

For example, if you transformed 1 ng of plasmid DNA into cells, diluted the transformation to a final volume of 1000 µL with Recovery Medium, then plated 25 µL of a 1:100 dilution of that transformation, and the next day you counted 150 colonies on your plate, your calculation would look like this:

# of colonies: 150
µg DNA transformed: 0.001
Final tansformation volume = 1000 µL
Volume plated = 25 µL
Dilution factor = 1 µL into 100 µL, 100-fold (factor of 100)

TE = (150 / 0.001) * (1000 / 25) * 100 = 6 x 108 cfu / µg

Can Amp-Seq technology be used in human clinical diagnostics?

AMPSEQ-001
Currently, we are unable to support human clinical diagnostic applications.

How do you determine the brightness of a dye?

The absolute intensity of a dye is a product of the extinction coefficient and the quantum yield. We have not measured the quantum yield for our dyes as this value is highly dependent upon the local environment, including the buffer system used for the measurement. However, we do provide the extinction coefficients for dye modifications at their lambda max wavelength, and these values are available under the Technical Specs tabs of our Oligo Modifications webpages. While quantum yield and extinction coefficients both contribute to dye detectability, the principal determinant for Stellaris® RNA FISH assays is actually the instrument optics, including the excitation source, available filters, and quantum efficiency of the camera.

Which dyes are compatible with my thermal cycler?

LGC Biosearch Technologies offers many common fluorophores including FAM, HEX and TAMRA dyes, as well as our own proprietary dyes. Our CAL Fluor® and Quasar® dye series span the spectrum with emission wavelengths ranging from yellow to far-red, and represent alternatives to dyes such as VIC®, Cy™3, Texas Red, LC Red® 640, Cy5, and Cy5.5. For your convenience we have compiled a Multiplexing Dye Recommendations Chart outlining optimal dye combinations in select qPCR machines, as well as a Fluorophore & BHQ® Dye Selection Chart listing reporter-quencher pairings. In addition, you may use our Spectral Overlay Tool to visualize the absorption and emission spectra of multiple dyes together.

Does LGC Biosearch Technologies make Safety Data Sheets (SDS) available?

Safety Data Sheets (SDS), formerly referred to as Material Safety Data Sheets (MSDS), are available for download under the Technical Specs or Related Info tabs found on most product webpages. If you are unable to access this document or need additional information, please contact our Technical Support team.

Does Amp-Seq provide data analysis software to generate genotype calls?

AMPSEQ-001
Biosearch Technologies provides an analysis pipeline (the BiosearchCaller software), compatible with the Amp-Seq technology, to produce genotypes from the sequencing data. The software can be accessed via a cloud system and our technical team will support the deployment and initial setup.

Should I use electrocompetent or chemically competent cells to make my library?

We recommend using electrocompetent cells for library generation, because the transformation efficiency for electrocompetent cells is higher. Higher transformation efficiency preserves library diversity.

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