• USA Home
  • CMC0007 - SIG10 5a Chemically Competent Cells

CMC0007 Sigma-Aldrich

SIG10 5a Chemically Competent Cells

for DNA plasmid production



Related Categories Cloning and Expression, Molecular Biology, Transformation of Bacteria More...
grade   for molecular biology
form   buffered aqueous solution
cell transformation   competent cell type: chemically competent
transformation efficiency: ≥1 x 108 cfu/μg
shipped in   dry ice
storage temp.   −70°C


General description

The SIG10 5a Chemically Competent Cells share the most useful genetic elements of standard cloning strains like DH5α and directly replace them in cloning protocols.
They provide the performance researchers need with ease of use as only common laboratory equipment is required and provide solutions for a wide range of applications at economical prices.

Features and Benefits

• Direct replacements for standard cloning strains like DH5α, DH10B, JM109, TOP10, XL1-Blue, etc.
• Optimized genetics for high yields: endonuclease and recombination minus
• Blue - white screening


• SIG10 5a chemically competent cells
• pUC 19 transformation control DNA
• recovery medium for cloning

Legal Information

DH10B is a trademark of Life Technologies

DH5α is a trademark of Invitrogen Corp.

Safety & Documentation

Safety Information

UN 3245 9


Certificate of Analysis

Please Enter a Lot Number

Certificate of Origin

Please Enter a Lot Number
Protocols & Articles


Competent Cell Selection & E. coli Markers Guide

We offer a range of Escherichia coli bacterial cells made competent with the highest efficiencies by optimized procedure specific to each strain. Choose from 24 new competent cells for a wide variety...
Keywords: Bacterial conjugations, Cloning, Gene expression, Methylations, Recombination, Transcription, transformation

Molecular Biology Handbook

Molecular Biology is the science that aims to understand biological activity at the molecular level. These biological activities usually involve the plant or animal cell, and the nucleic acids and pr...
Keywords: Cell culture, Cell signaling, Cloning, Detection methods, Electrophoresis, Gel electrophoresis, Gene expression, Genetics, Molecular biology, Molecular biology techniques, Nucleic acid hybridization, Nucleic acid purification, Polymerase chain reaction - quantitative, Protein electrophoresis, Purification, Transfection, Western blot, transformation


SIG10 5-alpha Chemically Competent Cells

SIG10 5-alpha Chemically Competent Cells are transformed by heat shock at 42oC, followed by incubation on ice.
Keywords: Antibiotics, Peptide synthesis, transformation

Selecting Correctly Expressing Recombinants

Blue / White colony screening is a strategy to quickly and easily distinguish between recombinant and non-recombinant colonies. It requires a special vector and a special strain of E. coli. It is par...
Keywords: AGE, Amplification, Antibiotics, Cell disruption, Centrifugation, Cloning, Degradations, Detergents, Diagnostic, Digestions, Electrophoresis, Gel electrophoresis, Molecular biology, Peptide synthesis, Phase transitions, Polymerase chain reaction, Precipitation, Purification, Sequencing, Transfection, transformation

Transforming E. coli with Engineered Plasmid

Inoue and colleagues developed this method in 1990. It works well for many strains commonly used in cloning. The original method calls for growing the overnight E. coli cultures at 18°C. We find that...
Keywords: Antibiotics, Centrifugation, Cloning, Peptide synthesis, Phase transitions, transformation

Related Products

related product

Product #


Add to Cart

L3022 LB Broth (Lennox), Powder microbial growth medium
L2897 LB Broth with agar (Lennox), Powder microbial growth medium
L5542 LB Agar Plates, pre-poured agar plates for E. coli
CMR0002 Recovery Medium for Cloning, for use with competent cells

Technical Service:

Our team of scientists has experience in all areas of research including Life Science, Material Science, Chemical Synthesis, Chromatography, Analytical and many others.

Bulk Ordering & Pricing:

Need larger quantities for your development, manufacturing or research applications?