E Coli Cspd Chemiluminescence
E. coli DNA Ligase catalyzes the formation of phosphodiester bonds in the presence of β-NAD between double-stranded DNAs with 3´ hydroxyl and 5´ phosphate cohesive termini. Single-stranded nucleic acids are not substrates for this enzyme. Applications: Second-strand cDNA synthesis (1). T4 DNA Ligase alternative when blunt-end ligation is not required (2). Source: Purified from E. coli 594 (Su - ) bearing λ lysogen gt4lop-11 lig + S7 (3). Performance and Quality Testing: Endodeoxyribonuclease and 3´ and 5´ exodeoxyribonuclease assays; ligation efficiency tested. Unit Definition: One unit is the...
Catalog: 18052-019
Size: 100 units
Size: 100 units
BL21(DE3)pLysE E. coli are ideal for use with T7 promoter-based expression vectors. Like BL21(DE3)pLysS E. coli , BL21(DE3)pLysE carry the lambda DE3 lysogen. In addition, BL21(DE3)pLysE cells contain the pLysE plasmid, which constitutively expresses T7 lysozyme. T7 lysozyme reduces the basal expression of target genes by inhibiting T7 RNA polymerase. The pLysE plasmid in BL21(DE3)pLysE expresses higher levels of T7 lysozyme than the pLysS plasmid in BL21(DE3)pLysS. The BL21(DE3)pLysE strain provides tighter control of T7 RNA polymerase, which is necessary when the recombinant protein to be ex...
Catalog: C6565-03
Size: 20 × 50 µl
Size: 20 × 50 µl
The Echo™ Cloning System is a two-vector system that utilizes the Cre-lox site-specific recombination system of bacteriophage P1 (1,2) for rapid cloning into multiple vectors. Your gene of interest is cloned into one of the specially designed donor vectors which can then be recombined with as many different Echo™ acceptor vectors as desired. The donor and acceptor vectors are placed in a buffer that contains Cre recombinase for a 25-minute, in vitro recombination reaction. Cre binds to the lox site present on each vector, brings them together, then cleaves and covalently reattaches the DNA str...
Catalog: C1010-10
Size: 10 reactions
Size: 10 reactions
BL21(DE3) E. coli are ideal for use with bacteriophage T7 promoter-based expression systems ( e.g. , pRSET, pCR¤T7, and pET). BL21(DE3) carry the lambda DE3 lysogen. Recombinant proteins that are non-toxic to E. coli are generally expressed at higher levels in BL21(DE3) cells than in BL21(DE3)pLysS or BL21(DE3)pLysE. However, the basal expression levels of heterologous genes are significantly higher in BL21(DE3) than in BL21(DE3)pLysS or BL21(DE3)pLysE.
Catalog: C6000-03
Size: 20 × 50 µl
Size: 20 × 50 µl
The Champion™ pET Expression System yields the highest-level protein production in E. coli . During expression, your protein of interest can reach levels greater than 50 percent of total cellular protein. Based on T7 expression vectors originally developed by Studier and colleagues (1-3), high-level expression is achieved because the T7 RNA polymerase is more processive than native E. coli RNA polymerase and is dedicated to the transcription of your gene of interest. Protein production is further enhanced in the system by the expression strain BL21 Star™ E. coli , which significantly improves ...
Catalog: K101-01
Size: 20 reactions
Size: 20 reactions
One Shot® BL21-AI™ E. coli are chemically competent cells designed for applications that require tight regulation and strong expression of toxic proteins from any T7 promoter-based expression systems. One Shot® BL21-AI™ Chemically Competent cells have a transformation efficiency of >1×10 8 cfu/ µg plasmid DNA. • Ideal for inducing expression of toxic protein • Gene expression is regulated by the addition of L-arabinose to culture • Suitable for use with any T7 promoter-based plasmids • Supplied in a convenient One Shot® format Excellent Expression of Toxic Recombinant Proteins One Shot® BL21-A...
Catalog: C6070-03
Size: 20 × 50 µl
Size: 20 × 50 µl
The Champion™ pET Expression System yields the highest-level protein production in E. coli . During expression, your protein of interest can reach levels greater than 50 percent of total cellular protein. Based on T7 expression vectors originally developed by Studier and colleagues (1-3), high-level expression is achieved because the T7 RNA polymerase is more processive than native E. coli RNA polymerase and is dedicated to the transcription of your gene of interest. Protein production is further enhanced in the system by the expression strain BL21 Star™ E. coli , which significantly improves ...
Catalog: K100-01
Size: 20 reactions
Size: 20 reactions
The Molecular Probes® BioParticles® product line consists of a series of fluorescently labeled, heat- or chemically killed bacteria and yeast in a variety of sizes, shapes, and natural antigenicities. These fluorescent BioParticles® products have been employed to study phagocytosis by fluorescence microscopy, quantitative spectrofluorometry, and flow cytometry. We offer E. coli (K-12 strain), S. aureus (Wood strain, without protein A) and zymosan ( S. cerevisiae ) BioParticles® conjugates covalently labeled with a variety of different fluorophores (special care has been taken to remove free dy...
Catalog: E-2864
Size: 10 mg
Size: 10 mg
Zero Blunt® TOPO® PCR Cloning Kits offers the fastest and easiest method for high-efficiency (cloning of blunt-end PCR products amplified with proofreading thermostable polymerases. The kits include linearized and topoisomerase I-activated pCR®-Blunt II-TOPO® Vector for 5-minute benchtop ligations without ligase (1). The pCR®-Blunt II-TOPO® Vector also features: • ccdB gene for positive selection (2) • Eco R I sites flanking the PCR product insertion site for easy excision of inserts • Kanamycin and Zeocin™ resistance genes for your choice of selection in E. coli • SP6 promoter/primer site for...
Catalog: K2800-02
Size: 20 preps
Size: 20 preps
The pCR®8/GW/TOPO® TA Cloning Kit delivers simple 5 minute cloning and access to the Gateway® recombination cloning vector platform. Our pCR®8 TOPO® TA vector contains a minimal MCS, so you sequence more of your insert and less of the vector. With our patented att sites, the pCR®8 vector is the simplest way to create an Entry Clone, which facilitates easy access via Gateway® recombination cloning to a variety of expression vectors without tedious sub-cloning, saving you valuable research time. The pCR®8/GW/TOPO® TA Cloning Kit offers: att sites for rapid recombination into a variety of Gateway...
Catalog: K250020
Size: 20 reactions
Size: 20 reactions
The pENTR™/SD/D-TOPO® Cloning Kits utilize a highly efficient, 5-minute cloning strategy ("TOPO® Cloning") to directionally clone a blunt-end PCR product into a vector for entry into the Gateway® System or the MultiSite Gateway® System. Blunt-end PCR products clone directionally into the pENTR™/SD/D-TOPO® entry vector at greater than 90% efficiency, and include an upstream Shine-Dalgarno sequence for expression in prokaryotes. The kit comes with everything necessary to clone and select your PCR amplified gene of interest. Gateway® System Ready - Rapidly shuttle cloned genes between multiple ve...
Catalog: K2420-20
Size: 20 reactions
Size: 20 reactions
The One Shot® Stbl3™ E. coli strain is designed especially for cloning direct repeats found in lentiviral expression vectors. Unlike TOP10 E. coli , these cells reduce the frequency of homologous recombination of long terminal repeats (LTRs) found in ViraPower™ Lentiviral Expression Vector and other retroviral vectors. The DNA yield from Stbl3™ cells is often >10-fold higher than alternative strains such as TOP10 (Table 1). One Shot® Stbl3™ Chemically Competent Cells deliver: • Optimal performance for the propagation of lentiviral vectors • Enhanced genomic cloning capacity ( mcr B, mrr ) • Ex...
Catalog: C7373-03
Size: 20 × 50 µl
Size: 20 × 50 µl
The TOPO® TA Cloning® Kits for Sequencing provide a highly efficient, 5 minute, one-step cloning strategy ("TOPO® Cloning") for the direct insertion of Taq polymerase-amplified PCR products into a plasmid vector for sequencing. Each kit uses the pCR™4-TOPO® TA vector with specially designed sequencing primer sites that return more insert sequence and less vector sequence from each reaction. These kits include everything necessary to clone and select recombinant vectors containing your PCR fragment of choice. Get More Sequence— Allows for more insert sequence and less vector seuquence when usin...
Catalog: K4530-20
Size: 20 reactions
Size: 20 reactions
TOP10 E. coli are provided at a transformation efficiency of 1 x 10e 9 cfu/µg supercoiled DNA and are ideal for high-efficiency cloning and plasmid propagation. They allow stable replication of high-copy number plasmids. The genotype of TOP10 cells is similar to the DH10B™strain, and offers the following features: -hsd R for efficient transformation of unmethylated DNA from PCR amplifications -mcrA for efficient transformation of methylated DNA from genomic preparations -lacZΔM15 for blue/white color screening of recombinant clones -endA1 for cleaner preparations of DNA and better results in d...
Catalog: C4040-10
Size: 10 reactions
Size: 10 reactions
One Shot® BL21 Star™ (DE3) E. coli are chemically competent cells designed for applications that require high-level expression of non-toxic recombinant proteins from low copy number, T7 promoter-based expression systems (e.g., Champion™ pET vectors) . One Shot® BL21 Star™ (DE3) Chemically Competent cells are controlled for a transformation efficiency of 1 x 10 8 cfu/ µg plasmid DNA. • A genotype that promotes high mRNA stability and protein yield • Ideal for use with low copy number, T7 promoter-based plasmids • The single tube, single use format allows all transformation steps to take place i...
Catalog: C6010-03
Size: 20 reactions
Size: 20 reactions
One Shot® TOP10 E. coli are convenient to use chemically competent cells quality controlled for a transformation efficiency of 1 x 10 9 cfu/ µg plasmid DNA. One Shot® TOP10 Chemically Competent cells are the same competent cells that come with many of our cloning kits and are ideal for high-efficiency cloning and plasmid propagation. • Maximizes cloning efficiency in single tube format • Enhanced genomic DNA cloning capabilities Easy-to-use, Single Tube Format One Shot® TOP10 E. coli are provided at a transformation efficiency of 1 x 10 9 cfu/ µg supercoiled DNA and allow stable replication of...
Catalog: C4040-06
Size: 40 reactions
Size: 40 reactions
Enoyl-[acyl-carrier-protein] Reductase NADH-dependent (FABI), a recombinant bacterial protein, is supplied in frozen format and is quite suitable for use in protein structure analyses. In general, recombinant proteins can also be used as immunogens, protein standards, and in other cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the E.coli FABI (NP_287908.1) (Gly 2-Lys 262) that is fused to a polyhistidine tag at the N-terminus. Activity: This recombinant protein has not been tested. Formulation: 20 mM Tris, 0.5 M NaCl, 10% glycerol, pH 7....
Catalog: 30001-E07E-25
Size: 5 × 5 µg
Size: 5 × 5 µg
Enoyl-[acyl-carrier-protein] Reductase NADH-dependent (FABI), a recombinant bacterial protein, is supplied in frozen format and is quite suitable for use in protein structure analyses. In general, recombinant proteins can also be used as immunogens, protein standards, and in other cell biology research applications. This recombinant protein was expressed from a DNA sequence encoding the E.coli FABI (NP_287908.1) (Gly 2-Lys 262) that is fused to a polyhistidine tag at the N-terminus. Activity: This recombinant protein has not been tested. Formulation: 20 mM Tris, 0.5 M NaCl, 10% glycerol, pH 7....
Catalog: 30001-E07E-5
Size: 5 µg
Size: 5 µg
This concentrated Nitro-Block-II™ Enhancer can be used with CSPD® or CDP-Star® chemiluminescent substrates to increase the alkaline phosphatase signal for protein or nucleic acid blots. The Nitro-Block-II™ membrane enhancer increases chemiluminescent signal intensity on nitrocellulose and PVDF membranes. • Chemically optimized formulations provide enhanced signal intensity in blotting applications with dioxetane-based substrate solutions (CSPD® or CDP-Star® substrates) on nitrocellulose or PVDF membranes. • Enhancer increases signal intensity, allowing decreased signal acquisition time. Increa...
Catalog: T2184
Size: 20 ml
Size: 20 ml
E Coli Cspd Chemiluminescence
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