COMT Protein, Human, Recombinant (His Tag)

Product Specifications

Overview

A DNA sequence encoding the human COMT (NP_000745.1) (Met1-Pro271) was expressed with a polyhistidine tag at the C-terminus.

Synonyms

HEL-S-98n Protein, Human

Gene Name

Catechol-O-methyltransferase

Expression System

Baculovirus-Insect Cells

Tag

C-His

Field of Research

Neurotransmitter Associated Enzymes

Endotoxin

< 1.0 EU per μg protein as determined by the LAL method.

Purity

> 85 % as determined by SDS-PAGE.

Activity

At Leading Biology, the biological activity of a recombinant protein is routinely measured using a bioassay, e.g. chemotaxis or cell proliferation assay, enzyme assay, or a functional ELISA. When a recombinant protein is an enzyme, specific activity is derived from an enzymatic assay. Each enzyme is tested for potency by cleavage of a substrate. We are in the process of updating the biological activity data. If you have any questions regarding this update, please feel free to contact our technical support team.

Form

Lyophilized

Buffer

Lyophilized from sterile 20 mM Tris, pH 7.5, 300 mM NaCl, 10% glycerol,0.1% Triton. Please contact us for any concerns or special requirements. Normally 5 % - 8 % trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the hard copy of CoA.

Function

Enzyme Proteins

Molecular Weight

The recombinant human COMT consists of 282 amino acids and predicts a molecular mass of 31.5 kDa.

Storage Conditions

In general, recombinant proteins are provided as lyophilized powder which are shipped at ambient temperature. Bulk packages of recombinant proteins are provided as frozen liquid. They are shipped out with blue ice unless customers require otherwise. Stable for 1 year at -20°C or below from date of shipment. For maximum recovery of product, centrifuge the original vial after thawing and opening the cap. For long-term storage, aliquot and store at -20°C or below. Avoid repeated freeze-thaw cycles.