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D3812 Sigma

DirectLoad 50 bp DNA Step Ladder

ready-to-use marker for DNA electrophoresis

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Properties

Related Categories Core Bioreagents, DNA Ladder Markers, Life Science Reagents for DNA/RNA Electrophoresis, Markers and Ladders, Molecular Biology,
form   (liquid)
usage   sufficient for 100 loads
suitability   suitable for electrophoresis (DNA)
storage temp.   −20°C

Description

Components

Sigma’s DirectLoad 50 bp DNA Step Ladder is provided in a gel-loading solution of 5% glycerol, 4.2 mM EDTA, 0.083% orange G and 0.0125% xylene cyanol.

Application

Suitable for size determination of PCR-generated DNA fragments with either agarose or polyacrylamide gels.

General description

Sigma’s DirectLoad 50 bp DNA Step Ladder contains 17 blunt-ended fragments consisting of 50 bp repeats from 50 to 500 bp, 100 bp repeats from 600 to 900 bp, and 1 kb repeats from 1 to 3 kb. Ten ul of the ladder can be loaded directly in a single lane on an agarose or polyacrylamide gel.

Other Notes

For optimal resolution, the recommended agarose gel concentration is 2.0%.

Features and Benefits

• Ready-to-load
• Easy-to-use
• Popular band sizes

Legal Information

DirectLoad is a trademark of Sigma-Aldrich Co. LLC

Price and Availability

Safety & Documentation

Safety Information

RIDADR 
NONH for all modes of transport
WGK Germany 
1

Documents

Certificate of Analysis

Certificate of Origin

Protocols & Articles

Articles

Introduction to Markers and Ladders

Sigma-Aldrich offers a variety of markers that aid size determination of samples separated by agarose and/or polyacrylamide gel electrophoresis. These products include markers for DNA, PCR fragments ...
Keywords: Digestions, Electrophoresis, Gel electrophoresis, PAGE, Polymerase chain reaction

Introduction to Nucleic Acid Electrophoresis

Introduction Agarose gel electrophoresis for DNA Agarose gel electrophoresis for RNA Polyacrylamide gel electrophoresis for DNA Reference
Keywords: AGE, Buffers, Degradations, Electrophoresis, Environmental, Gel electrophoresis, PAGE, Purification, Separation, Size-exclusion chromatography

Markers and Ladders Selection Guide

DNA and RNA size markers contain a mixture of DNA (or RNA) fragments of known length, making them suitable for estimating the fragment length of concurrently run samples. They stain well with ethidiu...
Keywords: AGE, Electrophoresis, Gel electrophoresis, PAGE, Polymerase chain reaction

Protocols

Antibody-Enzyme Mediated Hot Start PCR Protocol

During PCR assay preparation, nonspecific amplification can occur due to binding of PCR primers to nonspecific templates and from formation of primer dimers which result from using other primer molec...
Keywords: AGE, Amplification, Buffers, Electrophoresis, Enzyme activity, Gel electrophoresis, Nucleic acid denaturation, Polymerase chain reaction, Size-exclusion chromatography

Hot Start Taq Polymerase Protocol to Reduce Non-Specific Amplification

As PCR reactions sit at room temperature, during assay setup, nonspecific amplification can occur via:
Keywords: AGE, Amplification, Electrophoresis, Gel electrophoresis, Gene expression, Nucleic acid annealing, Polymerase chain reaction, Size-exclusion chromatography

Peer-Reviewed Papers
15

References

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