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Merck
CN

D3812

Sigma-Aldrich

DirectLoad 50 bp DNA Step Ladder

ready-to-use marker for DNA electrophoresis

Synonym(s):

DirectLoad 50 bp DNA Marker, Ready-to-use 50 bp DNA Marker, Ready-to-use DirectLoad 50 bp DNA Marker, Ready-to-use DirectLoad 50 bp DNA Step Ladder

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About This Item

UNSPSC Code:
41105335
NACRES:
NA.25
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Quality Level

form

(liquid)

usage

sufficient for 100 loads

suitability

suitable for electrophoresis (DNA)

storage temp.

−20°C

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.

Application

DirectLoad 50 bp DNA Step Ladder has been used for cell lysis and genomic cleavage detection assay.
Suitable for size determination of PCR-generated DNA fragments with either agarose or polyacrylamide gels.

Features and Benefits

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

Other Notes

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

Legal Information

DirectLoad is a trademark of Sigma-Aldrich Co. LLC

Storage Class Code

10 - Combustible liquids

WGK

WGK 1

Flash Point(F)

Not applicable

Flash Point(C)

Not applicable

Regulatory Information

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Cinzia Fabbro et al.
FEMS microbiology letters, 307(2), 158-164 (2010-04-24)
Culturable vibrios were isolated from seawater collected during an annual sampling study performed along the Gulf of Trieste coast (Northern Adriatic Sea), and conventional culturing and identification methods were used to investigate the presence of Vibrio parahaemolyticus. Biochemically selected Vibrio
Solid-phase reverse transfection for intracellular delivery of functionally active proteins
Bulkescher R, et al.
Genome Research, 27(10), 1752-1758 (2017)

Articles

Choose the appropriate markers and ladders for nucleic acid size determination of samples separated by electrophoresis. Determine size of DNA, RNA and PCR-generated fragments using agarose or polyacrylamide gels.

Markers for gel electrophoresis aid size determination of DNA, PCR fragments, and RNA, staining well with common nucleic acid stains.

选择适合的标记物和分子量标准,用于测定电泳分离样品的核酸大小。通过琼脂糖或聚丙烯酰胺凝胶检测DNA、RNA和PCR生成片段的大小。

Protocols

JumpStart™ Taq DNA Polymerase is an antibody-inactivated, hot start enzyme.

Protocol using antibody mediated hot start polymerase. Method has short activation period (<1min), and results in higher yields and more specificity over standard PCR methods.

使用抗体介导热启动聚合酶的实验方案。一种具有短活化阶段的方法(<1min), and results in higher yields and more specificity over standard PCR methods.

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