R&D Systems research reagents

Storage temperature: -70 °C - 8 °C
Purity: 95 %

Endotoxin Level - <0.01 EU per 1 μg of the protein by the LAL method. Activity - Measured by its ability to induce hemoglobin expression in K562 human chronic myelogenous leukemia cells. Schwall, R.H. et al. (1991) Method Enzymol. ...

Storage temperature: -70 °C - 8 °C
Purity: 95 %

CF stands for Carrier Free (CF). We typically add Bovine Serum Albumin (BSA) as a carrier protein to our recombinant proteins. Adding a carrier protein enhances protein stability, increases shelf-life, and allows the recombinant protein ...

Storage temperature: -70 °C
Purity: 95 %

Recombinant Human Ubiquitin Activating Enzyme (UBE1) is a member of the Ubiquitin-activating (E1) enzyme family that is required for the first step of the enzymatic cascade that subsequently utilizes a Ubiquitin-conjugating (E2) enzyme ...

Storage temperature: -70 °C - -20 °C
Purity: 90 %

Measured by its ability to hydrolyze the 5’-phosphate group from the substrate adenosine-5’-monophosphate (AMP). The orthophosphate product is measured by a Malachite Green Phosphate Detection Kit . The specific activity is >12,500 pmol/min/μg, ...

Storage temperature: -70 °C - -20 °C
Purity: 95 %

Recombinant Human Ubiquitin can be conjugated to substrate proteins via the subsequent actions of a Ubiquitin-activating (E1) enzyme, a Ubiquitin-conjugating (E2) enzyme, and a Ubiquitin ligase (E3). Reaction conditions will need to be ...

Storage temperature: -70 °C

The product is shipped with dry ice or equivalent. Upon receipt, store it immediately at the temperature recommended below. Species - Multi-Species

Storage temperature: 2 °C - 8 °C

Substrate Reagent Pack contains 8 vials of Color Reagent A (stabilized hydrogen peroxide, Part # 895000) and 8 vials of Color Reagent B (stabilized tetramethylbenzidine), both at 12 mL/vial, ...

Storage temperature: 2 °C - 8 °C

Substrate Reagent Pack contains 16 vials of TMB ELISA Substrate producing color development when contacting HRP-conjugated or biotinylated, streptavidin-HRP bound detection antibodies. REAGENT PREPARATION Warm ...

Storage temperature: 2 °C - 8 °C

Stop Solution contains 15 vials (6 mL/vial) of 2N sulfuric acid for the stopping the action of horseradish peroxidase on the tetramethylbenzidine substrate in an ELISA. PROCEDURE Add 50-100 µL/well to stop the action of horseradish ...

Storage temperature: 2 °C - 8 °C

Reagent Diluent Concentrate 2 (10X) (Part # 841380) contains 5 vials (21 mL/vial) of a 10% BSA solution in a concentrated formula which can be diluted to make a working solution at a range of final BSA concentrations ...