DNA Topoisomerase I Assay Kit

What it means: Topo I DNA relaxation activity — the quantity or activity this kit is designed to measure.

Why it matters:

• It tells you which quantity the readout reports, so you can match the kit to your study question.
• A defined target makes results comparable between runs, days and users.
• Knowing the target helps you plan standards, blanks and controls before you start.
• A clearly defined target makes it easier to compare results with published methods and earlier runs.
• The target also tells you which samples and reference materials are suitable.

For this product: For the DNA Topoisomerase I Assay Kit, the assay target is topo I DNA relaxation activity. The protocol PDF gives the exact conditions and volumes.

Tip: Keep the same conditions for every sample in a run, and include the standards and controls described in the protocol, so that results stay comparable between runs.

What it means: Fluorescence — how the result of the assay is read out.

Why it matters:

• The detection method decides which instrument you need before you order.
• Using the same method and settings for every sample keeps results comparable.
• Different methods suit different sample numbers and lab set-ups.
• Knowing the readout helps you check instrument availability in advance.
• The readout also decides which plates, tubes or gels you need to prepare.

For this product: For the DNA Topoisomerase I Assay Kit, the detection method is fluorescence. The protocol PDF gives the exact conditions and volumes.

Tip: Keep the same conditions for every sample in a run, and include the standards and controls described in the protocol, so that results stay comparable between runs.

What it means: Ex 485 nm / Em 535 nm — the wavelength setting used to read the signal.

Why it matters:

• The reader's filters or monochromator must match this setting.
• Using the stated wavelength keeps results comparable with the protocol.
• A fixed setting can be saved as one reader method and reused.
• The setting should be confirmed before the run starts.
• Reading every sample at the same setting keeps values comparable within a run.

For this product: For the DNA Topoisomerase I Assay Kit, the detection wavelength is Ex 485 nm / Em 535 nm. The protocol PDF gives the exact conditions and volumes.

Tip: Keep the same conditions for every sample in a run, and include the standards and controls described in the protocol, so that results stay comparable between runs.

What it means: 96-well or 384-well plate — the plate, vessel or format the kit is described for.

Why it matters:

• The format decides which consumables and equipment you need.
• Reagent volume per test, and therefore the number of tests per kit, depends on the format.
• Using the stated format keeps volumes close to the protocol values.
• Planning around the stated format avoids re-validating the method later.
• Using one format for all samples in a run keeps results comparable.

For this product: For the DNA Topoisomerase I Assay Kit, the plate format is 96-well or 384-well plate. The protocol PDF gives the exact conditions and volumes.

Tip: Keep the same conditions for every sample in a run, and include the standards and controls described in the protocol, so that results stay comparable between runs.

What it means: About 65 min — the time the protocol gives from starting the reaction to reading the result.

Why it matters:

• Knowing the run time helps you plan how many runs fit in one day.
• Fixed incubation times make runs easy to compare.
• The time helps you schedule sample preparation around the assay.
• Keeping times constant reduces run-to-run variation.
• Planned timing makes it easier to process several sample sets in a day.

For this product: For the DNA Topoisomerase I Assay Kit, the assay time is about 65 min. The protocol PDF gives the exact conditions and volumes.

Tip: Keep the same conditions for every sample in a run, and include the standards and controls described in the protocol, so that results stay comparable between runs.