D4889
デオキシリボ核酸 ナトリウム塩 from Escherichia coli strain B
Genomic, unsheared
別名:
DNA
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この商品について
CAS番号:
UNSPSC Code:
41106310
eCl@ss:
32160414
EC Number:
297-226-7
NACRES:
NA.52
MDL number:
Biological source:
Escherichia coli
Form:
lyophilized powder
Solubility:
water: ~1 g/L
Storage temp.:
2-8°C
biological source
Escherichia coli
Quality Level
grade
Molecular Biology
form
lyophilized powder
mol wt
>45 kb
solubility
water: ~1 g/L
storage temp.
2-8°C
General description
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.
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:
- 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
Biochem/physiol Actions
50%GC;Tm = 90.5°C
Preparation Note
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.
Analysis Note
DNAの質・完全性の評価は、パルスフィ-ルドゲル電気泳動およびエチジウムブロマイド染色により行っています。DNAには、RNAや制限酵素消化を阻害するおそれのある不純物は含まれません。
Other Notes
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.
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).
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保管分類
11 - Combustible Solids
wgk
WGK 3
flash_point_f
Not applicable
flash_point_c
Not applicable
ppe
Eyeshields, Gloves, type N95 (US)