This product is supplied in a unit size. 1 unit of any DNA = 50 µg.
D4889
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
Le tarif et la disponibilité ne sont pas disponibles actuellement.
Produits recommandés
Qualité
for molecular biology
Niveau de qualité
Forme
lyophilized powder
Poids mol.
>45 kb
Température de stockage
2-8°C
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Catégories apparentées
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.[1] 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:
Deoxyribonucleic acid sodium salt from Escherichia coli strain B has been used for:
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)
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