PCSK9 Protein, Rhesus, Recombinant (His Tag)

Product Specifications

Background

Proprotein convertase subtilisin/kexin type 9 (PCSK9), also known as NARC1 (neural apoptosis regulated convertase), which is a newly identified human secretory subtilase belonging to the proteinase K subfamily of the secretory subtilase family. PCSK9 protein is an enzyme which in humans is encoded by the PCSK9 gene with orthologs found across many species. It is expressed in neuroepithelioma, colon carcinoma, hepatic and pancreatic cell lines, and in Schwann cells. PCSK9 protein is highly expressed in the liver and regulates low density lipoprotein receptor (LDLR) protein levels. Inhibition of PCSK9 protein function is currently being explored as a means of lowering cholesterol levels. Thereby, PCSK9 protein is regarded as a new strategy to treat hypercholesterolemia. PCSK9 protein contributes to cholesterol homeostasis and may have a role in the differentiation of cortical neurons.

Overview

A DNA sequence encoding the Rhesus PCSK9 (NP_001106130.1) (Met 1-Gln 692) precursor was expressed, fused with a polyhistidine tag at the C-terminus.

Gene Name

Proprotein convertase subtilisin/kexin type 9

Expression System

HEK293 Cells

Tag

C-His

Field of Research

Serine Proteases and Regulators

Endotoxin

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

Purity

> 95 % as determined by SDS-PAGE.

Activity

1. Measured by its ability to bind biotinylated human LDLR in a functional ELISA. 2. Measured by its ability to bind biotinylated mouse LDLR in a functional ELISA.

Form

Lyophilized

Buffer

Lyophilized from sterile PBS, pH 7.4. 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, Biological Target proteins

Molecular Weight

The recombinant Rhesus PCSK9 consists of 673 amino acids and predicts a molecular mass of 72.7 kDa. As a result of glycosylation and proteolytic digestion, it migrates as doublet with apparent molecular mass of 20 kDa and 62 kDa corresponding to the pro domain and mature form respectively in SDS-PAGE under reducing conditions.

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.