N_Products

D-Norvaline is an alpha-amino acid. It is a natural component of an antifungal peptide of Bacillus subtilis, and may be part of the production of cell walls resistant to vancomycin. As a reagent it has been used to synthesize MMP inhibitors.

GelGreen™ is a sensitive, stable and environmentally safe green fluorescent nucleic acid dye designed to stain either dsDNA, ssDNA or RNA in agarose gels. GelGreen™ is far more sensitive than SYBR Safe. Unlike SYBR® dyes, which are known to be unstable, GelGreen™ is very stable, both hydrolytically and thermally. GelGreen™ is compatible with either a 254 nm UV transilluminator or a gel reader equipped with visible light excitation (such as blue LED light box, 488 nm laser-based gel scanner, or Dark Reader®).

GelGreen™ can be used for either post-electrophoresis gel staining or precast gel staining.

GelGreen™ is a sensitive, stable and environmentally safe green fluorescent nucleic acid dye designed to stain either dsDNA, ssDNA or RNA in agarose gels. GelGreen™ is far more sensitive than SYBR Safe. Unlike SYBR® dyes, which are known to be unstable, GelGreen™ is very stable, both hydrolytically and thermally. GelGreen™ is compatible with either a 254 nm UV transilluminator or a gel reader equipped with visible light excitation (such as blue LED light box, 488 nm laser-based gel scanner, or Dark Reader®).

GelGreen™ can be used for either post-electrophoresis gel staining or precast gel staining.

GelRed™ is an ultra-sensitive, extremely stable and environmentally safe fluorescent nucleic acid dye designed to replace the highly toxic ethidium bromide (EtBr) for staining dsDNA, ssDNA or RNA in agarose gels or polyacrylamide gels. GelRed™ is far more sensitive than EtBr without requiring a destaining step. GelRed™ and EtBr have virtually the same spectra, so you can directly replace EtBr with GelRed™ without changing your existing imaging system.

GelRed™ can be used to stain dsDNA, ssDNA or RNA in agarose gels via either precast or post gel staining or can be used to stain polyacrylamide gels via post gel staining. GelRed™ is also compatible with downstream DNA manipulations such as restriction digest, sequencing, and cloning.

A series of safety tests have confirmed that GelRed™ is noncytotoxic, nonmutagenic and nonhazardous at concentrations well above the working concentrations used in gel staining. As a result, GelRed™ can be safely disposed of down the drain or in regular trash, providing convenience and reducing cost in waste disposal.

GelRed™ 10,000X solution in DMSO is for established users of GelRed™ in DMSO who do not wish to change their laboratory protocols. For new users, we recommend GelRed™ 10,000X in water (catalog # G-725), which eliminates the hazards of handling DMSO for even better safety. The performance and stability of GelRed™ 10,000X is comparable in both the water and DMSO formulations.

GelRed™ is an ultra-sensitive, extremely stable and environmentally safe fluorescent nucleic acid dye designed to replace the highly toxic ethidium bromide (EtBr) for staining dsDNA, ssDNA or RNA in agarose gels or polyacrylamide gels. GelRed™ is far more sensitive than EtBr without requiring a destaining step. GelRed™ and EtBr have virtually the same spectra, so you can directly replace EtBr with GelRed™ without changing your existing imaging system.

N-Acetyl-L-carnosine, or N-Acetylcarnosine (abbreviated NAC) is a dipeptide. It is similar to carnosine but more resistant to carnosinase degradation thanks to the addition of an acetyl group.

N-gamma-Hydroxy-L-arginine is an intermediate in the biosynthesis of nitric oxide from L-arginine. Arginase is inhibited by N-gamma-Hydroxy-L-arginine, as is the cell proliferation of MDA-MB-468 cancer cells.

N-Succinyl-L-alanyl-L-alanyl-L-prolyl-L-phenylalanine 4-nitroanilide is a colorimetric substrate for peptidyl prolyl isomerase, chymotrypsin and human leukocyte cathepsin G.

β-Nicotinamide adenine dinucleotide (NAD+) plays a major role in metabolism as a cofactor and mobile electron acceptor. NAD+ is a required oxidizing cosubstrate for many enzymes. It is reduced to NADH (Cat# N-035) which carries electrons to the electron transport chain for subsequent oxidative phorphorylation and ATP production. NAD+ is capable of donating ADP-ribose moieties to a protein, producing nicotinamide in the process. Sirtuin enzymes use NAD+ as a substrate to deacetylate proteins and direct activity between the nucleus and mitochondria. NAD+ is regenerated by fermentation and by oxidative phosphorylation.

Reduced β-nicotinamide adenine dinucleotide (NADH) plays a major role in metabolism as a cofactor in redox reactions and as a mobile electron carrier. NADH is a high energy compound that donates electrons to the electron transport chain to provide energy for ATP production by oxidative phosphorylation. NADH is a required oxidizing cosubstrate in fermentation, which regenerates NAD (Cat# N-030). NADH is fluorescent, which provides for a relatively simple way to detect NADH in biological samples. NADH is also used in enzyme cycling assays to detect relevant biological molecules in tissues.

Nalidixic acid is a naphthyridone antibiotic that is similar in structure and mechanism to quinolones and is effective against both gram-positive and gram-negative bacteria. It acts as a bacteriostatic in lower concentrations but can be bacteriocidal at higher concentrations. Nalidixic acid indirectly inhibits proteins synthesis by binding DNA and interfering with enzymes involved in DNA replication and transcription.

Naphthol AS-BI N-acetyl-beta-D-glucosaminide is an enzyme substrate of beta-hexosaminidase. It has also been used as an equipment sterilization indicator.

Natamycin is a macrolide polyene antifungal agent isolated from Streptomyces species. It is effective against fungi such as Candida, Aspergillus, Cephalosporium, Fusarium, and Penicillium. Natamycin works by binding ergosterol and preventing carbohydrate and amino acid transport. Unlike other polyene antifungals, natamycin does not prevent ergosterol synthesis or alter cell membrane permeability. Natamycin has been used to study the lipid bilayer and as a fungicidal agent in agar media. It has also been used in research on pleiotropic regulator AdpAch. It is sparingly soluble in aqueous solution.

NDSB-201 is a protein specific additive that can be used to help solubilize and stabilize proteins at non-denaturing concentrations while preventing protein aggregation.

NDSB-201 is a member of a group of nondetergent sulfobetaines. These zwitterionic compounds can reduce aggregation and aid in refolding and renaturing of proteins found in bacterial expression systems and in inclusion bodies. Unlike detergents such as CHAPS, NDSBs are nondenaturing, even at higher concentrations and have been shown to increase the yield efficiency of membrane and nuclear proteins, among others.

Neomycin is a broad-spectrum aminoglycoside antibiotic isolated from Streptomyces species. It targets gram-negative and gram-positive bacteria. Neomycin can also be used as a selection agent for prokaryotic cells transformed with the neo gene or NPT II resistance gene and to study toxic antibacterial side effects. In addition, neomycin is a calcium channel protein inhibitor and DNase I inhibitor. It can be used in a variety of cell culture applications

Neutral red dye is a dark brown to dark green power used to stain nuclei red, in cell viability tests, and as a pH indicator (transition of pH indicator: pH 6.8-8.0, red to yellow). Additionally, it is used to prepare neutral red paper and as a histological stain for lysozymes.

Nickel Agarose Resin is available in bulk or in prepacked columns. It has a binding capacity of >25 mg/ml with approximately 60 kDa protein. In addition, it allows for purification of proteins under native or denaturing conditions. GoldBio Nickel Agarose works very well with the His-Tag Buffer Set.

IDA cross-linked Agarose resin consists of iminodiacetic acid groups ligated by stable ether linkages via a spacer arm. IDA is a tridentate chelating agent, covalently coupled to cross-linked agarose beads. This resin is loaded with Ni2+. The resulting, ready-to-use resin is ideal for rapid purifications of His-tagged proteins.

Affinity Chromatography is based on the interaction between certain superficial protein residues (histidines, cysteines and to a lesser extent tryptophans), with transition metal cations, forming chelates.

Low Density Nickel Agarose Resin is available in bulk or in prepacked columns. It has a binding capacity of >12 mg/ml with approximately 60 kDa protein. It works very well with the His-Tag Buffer Set.

IDA cross-linked Agarose resin consists of iminodiacetic acid groups ligated by stable ether linkages via a spacer arm. IDA is a tridentate chelating agent, covalently coupled to cross-linked agarose beads. This resin is loaded with Ni2+. The resulting, ready-to-use resin is ideal for rapid purifications of His-tagged proteins.

Affinity Chromatography is based on the interaction between certain superficial protein residues (histidines, cysteines and to a lesser extent tryptophans), with transition metal cations, forming chelates.

Nickel HTC 6% Agarose Beads are suitable for downstream purification using IMAC. These resins combine the advantages of Nickel purification with the high flow rates of the HTC resin (70% higher than commercial standards).

HTC beads are high throughput beads designed to meet the demand for industrial process separation. Their rigidity and mechanical resistance permits high flow rates, with good resolution in a minimum time frame, making these beads ideal for process-scale use. HTC beads are highly crosslinked 4% and 6% agarose matrices and have excellent physical and chromatographic qualities. They are autoclavable. These beads are an ideal support for the immobilization of ligands for Affinity Chromatography and base media support for producing IEX (Ion Exchange) and Hydrophobic interaction chromatography resins.