D8276
DNA Polymerase I, Klenow Fragment from Escherichia coli
buffered aqueous glycerol solution
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About This Item
Prodotti consigliati
Grado
for molecular biology
Forma fisica
buffered aqueous glycerol solution
PM
103 kDa
Concentrazione
~3,000 units/mL
N° accesso UniProt
Attività estranea
Endonuclease, none detected
Condizioni di spedizione
wet ice
Temperatura di conservazione
−20°C
Informazioni sul gene
Escherichia coli K12 ... polA(948356)
Categorie correlate
Descrizione generale
DNA polymerase I yields two fragments (small and large) upon protease digestion. The large fragment (Klenow fragment) loses the 5′ exonuclease activity that is present in the intact holoenzyme. However, it retains both the polymerase 5′→3′ activity and the 3′→5′ exonuclease activity of the native enzyme.
Applicazioni
Suitable for:
- DNA sequencing by the Sanger dideoxy method
- Synthesis of the complementary strand of cDNA
- Filling in 5′-overhangs in double stranded DNA to form blunt ends
- Mutagenesis of DNA with second strand synthesis using oligonucleotides
- Labeling DNA by the random primer method
Componenti
DNA Polymerase I is supplied as a solution in 50 mM Tris-HCl (pH 7.5), 1 mM EDTA, 5 mM dithiothretol, and 50% glycerol (v/v) .
Definizione di unità
One unit converts 10 nanomoles of deoxyribonucleoside triphosphates into acid insoluble material in 30 min. at 37 °C.
Ricostituzione
The enzyme solution may be diluted with 50 mM Tris-HCl, pH 7.5, 100 mM ammonium sulfate, 10 mM 2-mercaptoethanol, and 1 mg/ml bovine serum albumin.
Risultati analitici
The activity is assayed in a reaction mixture containing 50 mM potassium phosphate (pH 7.5), 3 mM MgCl2, 1 mM 2-mercaptoethanol, 32.5 μM 32P-dATP, 32.5 μM dTTP, 62.5 μg/ml poly(dA-dT) and 0.01-1 unit enzyme.
Prodotti correlati
N° Catalogo
Descrizione
Determinazione del prezzo
Avvertenze
Danger
Indicazioni di pericolo
Consigli di prudenza
Classi di pericolo
Resp. Sens. 1
Codice della classe di stoccaggio
10 - Combustible liquids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
Dispositivi di protezione individuale
Eyeshields, Gloves, multi-purpose combination respirator cartridge (US)
Certificati d'analisi (COA)
Cerca il Certificati d'analisi (COA) digitando il numero di lotto/batch corrispondente. I numeri di lotto o di batch sono stampati sull'etichetta dei prodotti dopo la parola ‘Lotto’ o ‘Batch’.
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R B Wallace et al.
Science (New York, N.Y.), 209(4463), 1396-1400 (1980-09-19)
Many eukaryotic genes contain intevening sequences, segments of DNA that interrupt the continuity of the gene. They are removed from RNA transcripts of the gene by a process known as splicing. The intervening sequence in a yeast tyrosine transfer RNA
H Klenow et al.
Proceedings of the National Academy of Sciences of the United States of America, 65(1), 168-175 (1970-01-01)
Purification of DNA polymerase from E. coli B has in two cases each time led to the isolation of two separate polymerase activities, enzyme A and enzyme B. Enzyme A was in contrast to enzyme B almost completely devoid of
L M Houdebine
Nucleic acids research, 3(3), 615-630 (1976-03-01)
E.Coli DNA polymerase I (Klenow subfragment) was used for the synthesis of complementary DNA with the mRNAs for rabbit milk proteins as templates. The cDNA formed, contained 200 nucleotides and represented about 20% of the mRNA template. The cDNA was
Yossi Weizmann et al.
Journal of the American Chemical Society, 126(4), 1073-1080 (2004-01-30)
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