IPTG-RO
Roche
Isopropil β-D-1-tiogalattopiranoside
mol wt 238.3, pkg of 1 g (10724815001), pkg of 5 g (11411446001)
Sinonimo/i:
IPTG, Isopropil β-D-tiogalattoside
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About This Item
Formula empirica (notazione di Hill):
C9H18O5S
Numero CAS:
Peso molecolare:
238.30
Beilstein:
4631
Numero MDL:
Codice UNSPSC:
12352200
ID PubChem:
Prodotti consigliati
Stato
powder
PM
238.3
Confezionamento
pkg of 1 g (10724815001)
pkg of 5 g (11411446001)
Produttore/marchio commerciale
Roche
Condizioni di spedizione
wet ice
Temperatura di conservazione
2-8°C
Stringa SMILE
CC(C)S[C@@H]1OC(CO)[C@H](O)C(O)[C@H]1O
InChI
1S/C9H18O5S/c1-4(2)15-9-8(13)7(12)6(11)5(3-10)14-9/h4-13H,3H2,1-2H3/t5-,6+,7+,8-,9+/m1/s1
BPHPUYQFMNQIOC-NXRLNHOXSA-N
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Descrizione generale
Isopropyl-β-D-thiogalactoside (IPTG) is a chemical analog of galactose that cannot be cleaved by β-galactosidase. IPTG functions by binding to the lacI repressor and altering its conformation, which prevents the repression of the β-galactosidase coding gene lacZ.
Applicazioni
Isopropyl-β-D-thiogalactoside (IPTG) is commonly used in cloning procedures that require induction of β-galactosidase activity. It is used in conjunction with X-Gal or Bluo-Gal in blue-white selection of recombinant bacterial colonies that induce expression of the lac operon in Escherichia coli. It has been used for the expression of recombinant genes in E. coli.
L′IPTG viene comunemente utilizzato nelle procedure di clonazione che richiedono l′induzione dell′attività della β-galattosidasi. Viene adoperato insieme a X-Gal o Bluo-Gal nella selezione blu-bianco delle colonie di batteri ricombinanti che inducono l′espressione dell′operone lac nell′Escherichia coli. L′IPTG agisce legandosi al repressore lacI e alterandone la conformazione e impedisce così la repressione del gene che codifica la β-galattosidasi, lacZ.
Altre note
Analogo del galattosio non metabolizzabile.
For life science research only. Not for use in diagnostic procedures.
The amount of labeled DNA depends on:
- amount of template DNA
- purity of template DNA
- conformation of template DNA
- average size of labeled fragment
Specifiche
Assay Time: 50minutes
Specific Activity: The described standard assay will results in a specific activity of 1.8 x 109 dpm/μg, corresponding to 65% incorporation with different substrate DNAs in 30minutes. When varying the ratio of template DNA to labeled dNTP, similar incorporation rates, but different levels of specific activity of the labeled probe are obtained.
Specific Activity: The described standard assay will results in a specific activity of 1.8 x 109 dpm/μg, corresponding to 65% incorporation with different substrate DNAs in 30minutes. When varying the ratio of template DNA to labeled dNTP, similar incorporation rates, but different levels of specific activity of the labeled probe are obtained.
Nota sulla preparazione
Sample Material
10 ng to 3μg template DNA, linearized and at least 100 to 200bp long
10 ng to 3μg template DNA, linearized and at least 100 to 200bp long
Working concentration: Final concentration should be 0.2 mM.
Storage conditions (working solution): Stock solutions of the product in water (e.g., 1 M IPTG) stored at -15 to -25 °C, are stable up to six months.
Storage conditions (working solution): Stock solutions of the product in water (e.g., 1 M IPTG) stored at -15 to -25 °C, are stable up to six months.
Codice della classe di stoccaggio
11 - Combustible Solids
Classe di pericolosità dell'acqua (WGK)
WGK 1
Punto d’infiammabilità (°F)
Not applicable
Punto d’infiammabilità (°C)
Not applicable
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The role of the Escherichia coli lacY gene product (the lactose permease) in the induction of isopropyl-beta-D-thiogalactopyranoside (IPTG) inducible promoters was studied in E. coli and P. fluorescens. This was done by comparing strains containing a lacIPOZYA chromosomal insert with
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