You searched for: Protein Linking and Labeling Systems

Supplier: Apollo Scientific

Liquid product red odourless pH-value 7,2 to 7,4 boiling point 103 °C. Optimised for background reduction.

Supplier: G-Biosciences

The Calmodulin Resin Kit is for the affinity purification of calmodulin binding proteins (CBP), including recombinant proteins with a CBP tag and calmodulin-regulated proteins in eukaryotic cells. The resin is 4% agarose coupled to calmodulin and has a ligand density of approximately 1 mg calmodulin/ml resin.

Supplier: Biotium

CF® dye-dCTP can be used to synthesise probes for in situ hybridisation, microarray, or to synthesise labelled DNA probes for in situ hybridisation and nucleic acid blotting applications.

Supplier: Biotium

The ExoBrite™ EV Surface Stain Sampler Kit, Green was developed to offer each of Biotium’s ExoBrite™ EV Surface Stains (CTB, WGA, and Annexin V) for assessing which stain offers the best coverage for the EV samples of interest.

Supplier: Biotium

Revolutionary technology allows antibody labelling with Cyanine 555 (Cy®3) or Cyanine 647 (Cy®5) in 30 minutes without a purification step. The labelling procedure tolerates many common buffer components and antibody stabilisers.

Supplier: Biotium

ExoBrite™ CTB EV Staining Kits were designed to overcome some of the challenges of EV detection, particularly in flow cytometry. ExoBrite™ CTB EV Stains bind to molecules in the EV membrane for bright, specific staining, with little to no background.

Supplier: Biotium

A wheat germ agglutinin (WGA) lectin labelled with Biotium’s CF® Dyes or HRP. It is a carbohydrate-binding lectin that has high affinity for sialic acid and N-acetylglucosamine moieties of glycoproteins. As a result, WGA conjugates will label yeast bud scars and the cell membrane of gram-positive bacteria and mammalian cells.

Supplier: G-Biosciences

The OneQuant™ format prevents loss of reagent due to repeated weighing as each vial contains only 1 - 2 mg HOOK™ Biotin Reagent.

Supplier: Biotium

CF®DI aminooxy dyes react with aldehyde/ketone groups on proteins or other biomolecules to form a stable oxime bond. The CF®DI dyes (CF®488DI, CF®555DI and CF®647DI) are designed to match each other for molecular weight and charge. The molecular weights of the same protein conjugated to different CF®DI dye colors are close to each other and the pl of the labeled proteins remains the same.

Supplier: Biotium

Biotium offers a number of reactive dye formats for labelling proteins, nucleic acids, and other biomolecules with fluorescent dyes. CF® dyes offer advantages in brightness and photostability compared other similar commercial dyes. CF® dyes are available in a number of reactive dye formats for CF® dye colours span the visible and near-infrared spectra.

Supplier: Biotium

Streptavidin conjugates can be used to detect biotinylated molecules with extremely high sensitivity. They are commonly used as secondary reagents to detect biotinylated primary probes such as antibodies in flow cytometry, Western blotting, immunocytochemistry and other applications.

Supplier: Biotium

Fluorescent bovine serum albumin (BSA) conjugates are commonly used as tracers in applications where physical dimensions are important. The conjugates can also be used for quantitative studies of electroporation, measurement of plasma volume in rats, and endocytosis studies. CF™ dye BSA conjugates are labelled with fluorescent CF™ dyes, which offer advantages in brightness and photostability compared to other fluorescent dyes.

Supplier: Biotium

CF® dye picolyl azide reacts with alkyne to form 1,2,3-triazole by 1,3-dipolar Huisgen cycloaddition through the use of a much lower copper (I) concentration without sacrificing reaction efficiency. The selected CF® dyes are exceptionally bright and photostable, making them the perfect dye for fluorescence detection.

Supplier: Biotium

CF™ dye azide reacts with alkyne to form 1,2,3-triazole by copper(I) catalysed 1,3-dipolar Huisgen cycloaddition. It could also undergo Staudinger ligation with a phosphine containing compound.

Supplier: Biotium

Phalloidin is a toxin isolated from the deadly Amanita phalloides mushroom. It is a bicyclic peptide that binds specifically to F-actin. Fluorescent conjugates of phalloidin are convenient tools to investigate the distribution of F-actin in fixed and permeabilised cells or tissue sections. One unit (U) of phallodin is sufficient to stain one sample (200 µl staining volume). A highly selective actin filament stain for fixed and permeabilised cells. Labeled phalloidins have similar affinity for both large and small filaments.

Supplier: Biotium

Carbocyanine dyes with long hydrocarbon chains have low fluorescence in aqueous phase, but become highly fluorescent upon binding to lipid bilayers, making this class of dyes ideal for staining cell membranes. Carbocyanine dye membrane staining is very stable, with minimal dye transfer between cells. Dilinoleyl carbocynaine dyes have much faster lateral diffusion rates than regular carbocyanine dyes, which facilitates labelling of neurons in tissues.

Supplier: Biotium

Bungarotoxins are venom toxins from the many-banded krait (Bungarus Multicinctus), which inhibit neurotransmission at the neuromuscular junction. Alpha-bungarotoxin is a potent inhibitor for the motor endplate acetylcholine receptor (Kd = 1 nM to 1 pM). Beta-bungarotoxin contains a small subunit that blocks voltage-gated K+ channels on the presynaptic membranes, and a large subunit that has phospholipase A2 activity. Fluorescent conjugates of alpha-bungarotoxin can be used to label acetylcholine receptors in skeletal muscle endplates.

Supplier: G-Biosciences

SDC™ (Steroid/Drug/Compound) Immobilisation Kit is designed for the immobilisation of steroids, drugs and chemical compounds that lack primary amines, sulfhydryls, carbonyls and other common coupling groups to a solid-phase agarose support for the use in affinity purification. The kit uses Immobilised DADPA (diaminodipropylamine) resin to bind steroids, drugs and chemicals through their active hydrogens.

Supplier: Rockland Immunochemicals

Avidin is biotin-binding protein, tetramer and suitable for used as a antigen, control and standard in assays. Avidin fluorescein, rhodamine, alkaline phosphatase, Texas Red™ conjugated are suitable for immunofluorescence microscopy, fluorescence based plate assays (FLISA) and fluorescent Western blotting. Avidin conjugated with glucose oxidase and peroxidase are useful as a detection reagent for primary antibodies conjugated with biotin and also can be utilised in Western blotting and ELISA experiments with proper substrates.

Supplier: Biotium

Dihydrorhodamine 123 is the reduced form of rhodamine 123, which is a commonly used fluorescent mitochondrial dye. It is non-fluorescent, but it readily enters most of the cells and is oxidized by oxidative species or by cellular redox systems to the fluorescent rhodamine 123 that accumulates in mitochondrial membranes. It is useful for detecting reactive oxygen species including superoxide (in the presence of peroxidase or cytochrome c) and peroxynitrite. Dihydrorhodamine 123 dihydrochloride is functionally equivalent to dihydrorhodamine 123 but with increased stability toward air oxidation and light during storage. Dihydroethidium (also called hydroethidium) is the chemically reduced form of the commonly used DNA dye ethidium bromide. The probe is useful to detect oxidative activities in viable cells, including respiratory burst in phagocytes. Dihydroethidium itself has blue fluorescence (355/420 nm) in cells, while the oxidized form ethidium has red fluorescence (518/605 nm) upon DNA intercalation. H2DCFDA (2′,7′-Dichlorodihydrofluorescein diacetate) is a useful fluorogenic reagent to detect reactive oxygen intermediates in cells. On oxidation, H2DCFDA becomes the highly green fluorescent 2′,7′-dichlorofluorescein, 504/529 nm (end product).

Supplier: AAT BIOQUEST

Annexins are a family of proteins that bind to phospholipid membranes in the presence of calcium.

Supplier: AAT BIOQUEST

Biotin is widely used for labelling biomolecules, in particular, antibodies.

Supplier: AAT BIOQUEST

PerCP (Peridinin-chlorophyll-protein complex) is isolated from Dinophyceae sp.

Supplier: AAT BIOQUEST

DY647 CEP (DyLight 647 phosphoramidite) is an excellent replacement to the commonly used Cy5 phosphoramidite.

Supplier: AAT BIOQUEST

PE-Texas Red is a popular colour used in flow cytometry.

Supplier: Thermo Fisher Scientific

The iodoTMTzero™ label reagent can be used as an isotopic 'light' duplex tag for MS-level protein quantitation.

Supplier: G-Biosciences

HOOK™-Biotin-PDA, 50 mg

Supplier: Thermo Fisher Scientific

The iodoTMTsixplex™ Isobaric Mass Tag Labeling Kit contains iodoTMT™ reagents and associated materials for the irreversible labeling of sulfhydryl groups.

Supplier: AAT BIOQUEST

Protein-protein conjugations are commonly performed with a bifunctional linker (such as the commonly used SMCC), having different reactivity on each end for linking two different proteins.

Supplier: AAT BIOQUEST

iFluor® dyes are developed for labelling proteins, in particular, antibodies.