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Invitrogen™ TrackIt™ 1 Kb Plus DNA Ladder
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Catalog No. 10488085
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10488085 50 μg
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Catalog No. 10488085 Supplier Invitrogen™ Supplier No. 10488085
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Description

Includes

TrackIt™ 1 Kb Plus DNA Ladder (0.1μg/μL) in 10mM Tris-HCl (pH 7.5), 10mM EDTA (pH 8.0), 0.06% XCFF, 0.6% tartrazine, and 5% glycerol; For 100 applications

Suitable for sizing linear double-stranded DNA fragments from 100 bp to 12 kb

TrackIt™ 1Kb Plus DNA Ladder is prepared from plasmid containing repeats of 1,000 bp DNA fragment. The 1,650bp band is generated from pUC and all bands <1,000 bp are from lambda DNA. TrackIt 1Kb Plus DNA Ladder is formulated with two unique tracking dyes, Xylene Cyanol FF (XCFF) and tartrazine, that allow to visually track DNA migration during electrophoresis and also indicate when maximum resolution is achieved. Tracking dyes do not obscure visualization of DNA bands in ladder as dyes run outside limits of most DNA bands in ladder.

  • Consists of 12 bands in 1,000bp increments ranging in size from 1 to 12 Kb, a 1,650 bp fragment, and vector DNA fragments from 100 to 850 bp
  • Orientation doublet at 1,650 bp and 2,000 bp for easy reference
  • Formulated with unique tracking dyes, XCFF and tartrazine
  • Designed for use with E-Gel™ agarose gels and TBE/TAE agarose gels
  • Supplied in ready-to-load format, stable at room temperature
  • Visualized with ethidium bromide or SYBR™ Green staining
  • Compatibile with agarose gels E-Gel™ gels

Acrylamide Gel Electrophoresis, Agarose Gel Electrophoresis, DNA and RNA Purification and Analysis, Nucleic Acid Gel Electrophoresis and Blotting

Order Info

Shipping Condition: Approved for shipment at Room Temperature or on Wet or Dry Ice

Specifications

Content And Storage • 500 μL TrackIt 1 Kb Plus DNA Ladder
• 1 mL 6X TrackIt Cyan/Orange Loading Buffer

Store at room temperature or at 4°C for up to 24 months. For longer periods, store at -20°C.
Concentration 0.1 μg/μL
Gel Type Agarose
Ready to Load Yes
Sample Loading Volume 1 mL
Size Range 100 to 15000 bp
Volume (Metric) 500 μL
Gel Compatibility Agarose gel
No. of Reactions 100 Applications
Quantity 50 μg
Shipping Condition Approved for shipment at Room Temperature or on Dry Ice
Technology Individual chromatography-purified DNA fragments
Product Line TrackIt
Product Type DNA Ladder
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Frequently Asked Questions (FAQs)

Can I know the sequences of Invitrogen DNA ladders?

Sequences of Invitrogen DNA and RNA ladders are proprietary.
Are Invitrogen DNA ladders composed of linear or circular/supercoiled DNA?

Invitrogen DNA ladders contain linear dsDNA fragments.
Are Invitrogen DNA ladders composed of single-stranded or double-stranded DNA fragments?

Invitrogen DNA ladders are composed of double-stranded DNA fragments only.
I'm seeing anomalous migration of my DNA ladder. What happened?

This can happen if the marker was heated. Please ensure that the ladders are not heated before use.

What is the difference between the TrackIt DNA Ladders and other DNA ladders?

TrackIt DNA Ladders contain two tracking dyes in the sample buffers, which serve as visual markers for tracking electrophoresis progress through the gel, and also to indicate when maximum resolution is achieved. The tracking dyes should not obscure your visualization of DNA bands in the ladder, as the dyes run outside the limits of most DNA bands in the ladder.

TrackIt Cyan/Orange Loading Buffer is formulated with unique tracking dyes, Xylene Cyanol FF and Orange G. We recommend TrackIt Cyan/Orange Loading Buffer for DNA fragments between 10 bp and 1 kb.

The TrackIt Cyan/Yellow Loading Buffer is formulated with unique tracking dyes, Xylene Cyanol FF and Tartrazine. We recommend TrackIt Cyan/Yellow Loading Buffer for DNA fragments between 100 bp and 10 kb. The molecular weights are Xylene Cyanol FF, 638.6; Orange G, 452.4; Tartrazine, 534.4.

Note: The TrackIt DNA Ladders are not recommended for use with polyacrylamide gels and are not designed for quantitation.

I am using a quantitative DNA standard and see little difference between the bands when they are ethidium bromide stained. How can this occur and what can I do?

Here are a few suggestions:

(1) Excess volume loaded on gel. The smallest loading volume will result in the greatest difference in band thickness between different masses. Basically overloading the ladders gives saturated bands which do not show any variation in intensity. It is best to load all samples in the same volume.

(2) Sample loaded in larger or smaller volume than standard. Load equal volumes of sample and standard DNA for accurate comparison.

(3) Ethidium bromide (EtBr) staining after electrophoresis. Include ethidium bromide in the gel rather than staining after electrophoresis to increase the difference in band intensity.

(4) EtBr was in the gel, but not the running buffer. This results in the absence of EtBr in the lower half of the gel after electrophoresis and therefore differential fluorescence between bands in the upper half of the gel and the lower half of the gel.
What can cause anomalous migration of my DNA markers?

In general there are very few reasons why a DNA marker would run anomalously. Here are a few suggestions:

(1) For Lambda DNA/Hind III Fragments, the cos site reannealed. Heat Lambda DNA/Hind III Fragments at 65 degrees C for no longer than 10 min before electrophoresis.

(2) Improper electrophoresis conditions were used. Do not allow voltage to exceed ~20 V/cm. Maintain a temperature <30 degrees C during electrophoresis. Check that the electrophoresis buffer used has sufficient buffering capacity.

(3) DNA was denatured. Do not heat standards (except Lambda-derived markers) prior to electrophoresis. Dilute markers in a buffer containing 20 mM NaCl.
I ran my DNA molecular weight ladder, and several bands seem to be missing. Can you offer suggestions on how to rectify this?

There are a few possible reasons for this:

(1) Small DNA bands were electrophoresed off the gel. Electrophorese the gel for less time, at lower voltage, or use a higher percentage gel.

(2) The small bands migrated with the dye front due to differences in ionic strength between gel and buffer. Be sure the buffer in the gel is the same as the electrophoresis buffer.

(3) DNA bands of similar molecular size were not resolved. Increase the electrophoresis time and check the proper percentage gel for resolution. For DNA fragments <1,000 bp, try Agarose 1000 (Cat. No. 16550100) instead of agarose.

(4) DNA was denatured. Do not heat standards (except Lambda-derived markers) prior to electrophoresis. Dilute markers in a buffer containing 20 mM NaCl.

Are there any suggestions to improve the detection of the bands of my DNA molecular weight ladder in an agarose gel?

Faint or absent DNA ladders might be due to:

(1) An insufficient quantity or concentration of DNA loaded on the gel. You can increase the amount of DNA.

(2) Degraded DNA. Avoid nuclease contamination of the DNA standards. Use sterile or autoclaved tips.

(3) DNA was electrophoresed off the gel. Electrophorese the gel for less time, at a lower voltage, or use a higher percentage gel.

(4) An improper UV light source was used for ethidium bromide - stained DNA. Use short-wavelength (254 nm) UV light for greater sensitivity.

(5) The fluorescence bleached after long UV exposure. Stain the gel again with ethidium bromide.

(6) For Biotinylated Lambda DNA/Hind III Fragments or Biotinylated PhiX174/Hinf I Fragments, the biotin was removed by exposure to alkaline conditions. Minimize exposure of biotinylated DNA to NaOH. Note: Alkaline transfers to a membrane do not present a problem when performed at room temperature.

What are the concentrations of all DNA fragments in the TrackIt 1 Kb Plus DNA Ladder (Cat. No. 10488085)?

The TrackIt 1 Kb Plus DNA Ladder (Cat. No. 10488085) consists of 18 individual chromatography-purified DNA fragments ranging in size from 100 bp to 15,000 bp; the total amount of all fragments is 0.5 µg. Please see below the corresponding concentrations for each DNA fragment.

  • 15000 bp - 20 ng/0.5 µg
  • 10000 bp - 20 ng/0.5 µg
  • 8000 bp - 20 ng/0.5 µg
  • 7000 bp - 20 ng/0.5 µg
  • 6000 bp - 20 ng/0.5 µg
  • 5000 bp - 20 ng/0.5 µg
  • 4000 bp - 20 ng/0.5 µg
  • 3000 bp - 20 ng/0.5 µg
  • 2000 bp - 20 ng/0.5 µg
  • 1500 bp - 70 ng/0.5 µg
  • 1000 bp - 30 ng/0.5 µg
  • 850 bp - 30 ng/0.5 µg
  • 650 bp - 30 ng/0.5 µg
  • 500 bp - 30 ng/0.5 µg
  • 400 bp - 30 ng/0.5 µg
  • 300 bp - 30 ng/0.5 µg
  • 200 bp - 30 ng/0.5 µg
  • 100 bp - 40 ng/0.5 µg

For more information on DNA & RNA Extraction and Analysis, please view our DNA & RNA Extraction Articles, Webinars, & Videos.
How should I store the TrackIt 1 Kb Plus DNA Ladder (Cat. No. 10488085)?

We recommend storing the TrackIt 1 Kb Plus DNA Ladder at 4 degrees C for up to 6 months and at -20 degrees C for longer periods.

What could be causing smearing of my molecular weight DNA ladder?

(1) Incorrect concentration of DNA ladder gives poor separation and smearing of DNA bands.
(2) Samples containing ≥50 mM NaCl, 100 mM KCl, 10 mM acetate ions, or 10 mM EDTA (i.e. certain restriction enzyme and PCR buffers) will cause loss of resolution on E-Gel agarose gels.

For Research Use Only. Not for use in diagnostic procedures.