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Enrofloxacin is a fluoroquinolone antibiotic targeting gram-positive and gram-negative bacteria as well as some Mycoplasma species. It has been useful in researching resistance to quinolones in Salmonella enterica, Mycoplasma gallisepticum, and E. coli. It is freely soluble in aqueous solution.

Eosin Y is a popular dye used in cosmetics and pharmaceuticals as well as a tissue and vital stain. It is used as a counterstain to hematoxylin in haematoxylin and eosin (H&E) staining, one of the principal stains in histology for cancer diagnosis. It stains proteins in the cytoplasm along with collagen and muscle fibers. In other applications, when combined with silica nanoparticles it can be part of a fluorophore for a peroxyoxalate chemiluminescence system.

EPGN is a member of the epidermal growth factor family and expression has been seen in several tissues, including the testis, liver, heart and certain tumor cells. It is a strong mitogen for fibroblasts and epithelial cells but has low affinity for its main receptor, ErbB1. The enhanced mitogenic potential is attributed to inefficient receptor ubiquitylation and endocytosis. EPGN stimulates phosphorylation of c- erbB-1 and MAP kinases in epithelial cells. The protein contains a conserved sequence of six cysteine residues and two N-linked glycosylation sites, with two hydrophobic regions comprised of a signal sequence and a transmembrane domain. Alternative splicing of the EPGN gene results in multiple isoforms.

Epibrassinolide is a plant steroid hormone of the brassinosteroid family. Its functions include protection from environmental stressors and altering the metabolism under a variety of conditions. Epibrassinolide has been shown to decrease toxicity and stimulate healthy plant growth in plants under stress.

EGCG has been shown to have a broad spectrum of antibacterial activity against gram positive and some gram negative bacteria. It is used synergistically with penicillin binding protein inhibitors because both target peptidoglycan on the cell wall. While the exact mechanism is not known, research on EGCG activity indicates bacterial cell wall damage by direct peptidoglycan binding.

EREG is a member of the epidermal growth factor (EGF) family and is expressed mainly in the placenta and peripheral blood leukocytes, as well as in certain carcinomas of the bladder, lung, kidney, and colon. EREG stimulates the proliferation of keratinocytes, hepatocytes, fibroblasts and vascular smooth muscle cells. Additionally, it inhibits the growth of several tumor-derived epithelial cell lines. EREG is synthesized as a transmembrane protein and the ectodomain is cleaved by a protease to release the mature protein. The mature protein can bind to EGFR, as well as most members of the ERBB family of RTKs.

Erlotinib HCl is an anti-cancer agent targeting epidermal growth factor receptor (EGFR) tyrosine kinase ATP binding sites, which are commonly overexpressed and sometimes mutated in a variety of cancers. Erlotinib prevents the formation of EGFR homodimers leading to suppression of signal transmittance and tumor growth inhibition. Additionally, erlotinib suppresses cyclin-dependent kinase 2 (Cdk2). It has been shown to be effective against non-small cell lung cancer and pancreatic cancer.

Erythromycin is a macrolide antibiotic isolated from Streptomyces erythreus. It displays strong efficacy against gram-positive cocci and bacilli and some mycobacteria, mycoplasma, and spirochetes. In addition to its antimicrobial properties, erythromycin is a motilin receptor agonist that has been shown to inhibit respiratory glycoconjugate secretion in vitro. It has also been used to select for recombinant Lactococcus lactis MG1363 strains in microbiological applications.

Erythromycin is a macrolide antibiotic isolated from Streptomyces erythreus. It displays strong efficacy against gram-positive cocci and bacilli and some mycobacteria, mycoplasma, and spirochetes. In addition to its antimicrobial properties, erythromycin is a motilin receptor agonist that has been shown to inhibit respiratory glycoconjugate secretion in vitro. Erythromycin estolate is freely soluble in organic solvents.

Erythromycin ethylsuccinate is a macrolide antibiotic with a target spectrum similar to that of penicillin. It has shown high efficacy against Mycoplasma pneumoniae and Legionella pneumophila. Additionally, it has been used to study erythromycin-resistance bacteria, down-regulation of motilin receptors, and mutations on the omsA and firA genes. Erythromycin ethylsuccinate is freely soluble in organic solvents.

Ethambutol is an antitubercular antibiotic effective against Mycobacterium species, especially Mycobacterium tuberculosis. It has been used to study multidrug-resistant tuberculosis and in combination with other drugs to decrease the risk of developing additional multidrug resistant species.

Ethambutol DiHCl is a hydrochloride salt form of an ethylenediamine derivative that is used as an anti-mycobiotic. It has been used for studying multidrug resistance in Mycobacterium tuberculosis and to investigate effective antibiotic combinations for ethambutol DiHCl.

Ethionamide is a thioamide antibiotic. Primarily targeting Mycobacterium tuberculosis and Mycobacterium leprae, ethionamide is useful against tuberculosis and leprosy. Although the mechanism is not well known, it is thought that ethionamide prevents synthesis of mycolic acids which are a required component of Mycobacterium cell walls. It is sparingly soluble.

EvaGreen® dye is a green fluorescent nucleic acid dye with features that make the dye useful for several applications including qPCR and DNA melt curve analysis, real-time monitoring of thermophilic helicase-dependent amplification (tHDA), and capillary gel electrophoresis. The DNA-bound dye has excitation and emission spectra very close to those of fluorescein (FAM) or SYBR® Green I, making the dye readily compatible with instruments equipped with the 488 nm argon laser or any visible light excitation with wavelength in the region. EvaGreen® dye is extremely stable both thermally and hydrolytically, providing convenience during routine handling. The dye is essentially nonfluorescent by itself, but becomes highly fluorescent upon binding to dsDNA. EvaGreen® dye is nonmutagenic and noncytotoxic by being completely impermeable to cell membranes, making it a great alternative to SYBR® Green I, which enters cell rapidly and is known to be a powerful mutation-enhancer (Ohta, et al. (2001). Mutation Research, 492(1), 91-97).

The unique properties of EvaGreen® dye have made it particularly useful in quantitative real-time PCR (qPCR) applications. Compared with the widely used SYBR® Green I, EvaGreen® dye is generally less inhibitory toward PCR and less likely to cause nonspecific amplification. As a result, EvaGreen® dye can be used at a much higher dye concentration than SYBR® Green I, resulting in a high resolution signal for droplet digital PCR, real-time PCR and melt curve analysis.

GoldBio’s GB10B-Pro™ Electrocompetent E. coli cells are especially designed for the most demanding cloning applications. GB10B-Pro™ cells will provide the greatest number of transformants for when your research requires it, including assembling large and multi-DNA fragments, cloning large (≥10 kb up to 350 kb) or difficult construct transformations, working with synthetic bio-applications, and even BAC cloning.

Product Specifications
Competent cell type: ElectroCompetent
Equivalent to: DH10B
Species: E. coli
Transformation efficiency:≥1 x 10⁹ cfu/µg pUC19 DNA
Blue/white screening: Yes

GoldBio’s GB10B™ Chemically Competent E. coli cells are high efficiency cells, suitable for a wide variety of applications such as cloning and sub-cloning. GB10B™ Chemically Competent E. coli cells have multiple features including the ɸ80lacZ∆M15 marker, which provides α-complementation of the β-galactosidase gene with blue/white screening protocol. These cells also have the mcrA genotypic marker and the mcrBC, mrr deletion, which allows for cloning of DNA that contains methylcytosine and methyladenine.

Product Specifications
Competent cell type: Chemically competent
Equivalent to: DH10B
Species: E. coli
Transformation efficiency: ≥8.2 x 10⁶ cfu/µg pUC19 DNA
Blue/white screening: Yes

GoldBio’s GB10B™ Electrocompetent E. coli cells are high efficiency cells, ≥2 x 10⁸ cfu/µg plasmid DNA, suitable for a wide variety of applications requiring high transformation efficiencies, such as cloning and subcloning, as well as working with either cDNA or gDNA library construction. GB10B™ Electrocompetent E. coli cells have multiple features including the ɸ80lacZ∆M15 marker, which provides α-complementation of the β-galactosidase gene with blue/white screening protocol. These cells also have the mcrA genotypic marker and the mcrBC, mrr deletion, which allows for cloning of DNA that contains methylcytosine and methyladenine. Here, we present a detailed protocol for electroporation using GB10B™ Electrocompetent E. coli cells.

Product Specifications
Competent cell type: ElectroCompetent
Equivalent to: DH10B
Species: E. coli
Transformation efficiency: ≥2 x 10⁸ cfu/µg pUC19 DNA
Blue/white screening: Yes

GoldBio’s GB5-alpha™ Chemically Competent E. coli cells are suitable for high efficiency transformation in a wide variety of routine applications such as plasmid isolation, cloning, and subcloning.

Product Specifications
Competent cell type: Chemically Competent
Equivalent to: DH5-alpha
Species: E. coli
Transformation efficiency: ≥5 x 10⁶ cfu/µg pUC19 DNA
Blue/white screening: Yes