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D4889

Sigma-Aldrich

Deoxyribonucleic acid sodium salt from Escherichia coli strain B

Genomic, unsheared

Synonyme(s) :

DNA

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About This Item

Numéro CAS:
Numéro CE :
Numéro MDL:
Code UNSPSC :
41106310
eCl@ss :
32160414
Nomenclature NACRES :
NA.52

Qualité

for molecular biology

Niveau de qualité

Forme

lyophilized powder

Poids mol.

>45 kb

Température de stockage

2-8°C

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Description générale

Escherichia coli strain B is most widely studied DNA after k-12. The genomes of E coli strain B and k-12 show differences in the IS sequence elements. Strain B have B-islands and express O-specific side-chain LPS. The product is unsheared genomic DNA.

Spécificité

50% GC; Tm = 90.5 °C

Application

The DNAs are particularly useful for genomic analysis, including PCR, library construction in bacteriophage λ, and in heterologous pre-hybridization and hybridization protocols.
Deoxyribonucleic acid sodium salt from Escherichia coli strain B has been used for:
  • PCR reactions of genomic DNA of Gardnerella vaginalis
  • nick translation and radiolabeling of dNTP
  • generating standard curve for 16S rDNA quantification
  • transfecting neutrophils
  • testing the extraction methods

Définition de l'unité

One unit will yield an A260 of 1.0 in 1.0 ml of 1 mM Tris-HCl, pH 7.5, with 1 mM NaCl and 1 mM EDTA (1 cm light path).

Notes préparatoires

Purified by anion exchange chromatography, dialyzed against a solution of 1 mM sodium chloride, 1 mM EDTA and 1 mM Trizma HCl, pH 7.5 and lyophilized at a concentration of approx. 2 units per mL. Approx. 20 A260 units per mg DNA. % GC is the percentage of G/C base pairs. Tm is the temperature at the midpoint of the thermal denaturation profile.

Remarque sur l'analyse

Analyzed by gel electrophoresis and visualization after ethidium bromide staining, with single predominant band of 45 kB or greater.

Autres remarques

DNA in solution will reanneal on standing at room temperature so it is recommended to boil the solution for 10 minutes and then cool on ice for at least 5 minutes prior to use.

Produit(s) apparenté(s)

Réf. du produit
Description
Tarif

Code de la classe de stockage

11 - Combustible Solids

Classe de danger pour l'eau (WGK)

WGK 3

Point d'éclair (°F)

Not applicable

Point d'éclair (°C)

Not applicable

Équipement de protection individuelle

Eyeshields, Gloves, type N95 (US)


Certificats d'analyse (COA)

Recherchez un Certificats d'analyse (COA) en saisissant le numéro de lot du produit. Les numéros de lot figurent sur l'étiquette du produit après les mots "Lot" ou "Batch".

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Consulter la Bibliothèque de documents

Genomic comparisons among Escherichia coli strains B, K-12, and O157: H7 using IS elements as molecular markers
Schneider D, et al.
BMC Microbiology, 2(1), 18-18 (2002)
Johan Sukweenadhi et al.
Antonie van Leeuwenhoek, 106(5), 935-945 (2014-08-30)
Strain DCY84(T), a Gram-stain positive, rod-shaped, aerobic, spore-forming bacterium, motile by means of peritrichous flagella, was isolated from humus soil from Yongin forest in Gyeonggi province, South Korea. Strain DCY84(T) shared the highest sequence similarity with Paenibacillus barengoltzii KACC 15270(T)
Rudolph Spangler et al.
PloS one, 4(9), e7010-e7010 (2009-09-16)
PCR in principle can detect a single target molecule in a reaction mixture. Contaminating bacterial DNA in reagents creates a practical limit on the use of PCR to detect dilute bacterial DNA in environmental or public health samples. The most
Mohamed El-Agamy Farh et al.
Journal of microbiology (Seoul, Korea), 55(10), 767-774 (2017-09-29)
Gram-staining-negative, uniflagellated, rod-shaped, designated as DCY110
M Agarwal et al.
BJU international, 88(9), 868-870 (2002-02-20)
To investigate the possible role of Gardnerella vaginalis in interstitial cystitis (IC), using molecular methods to avoid difficulties with the culture and recovery of viable organisms, and the problems associated with the recovery of low numbers of culturable organisms. Thirty-three

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