Recombinant Human SerpinA3/AACT Protein (His Tag)

Specifications

Catalog number

PKSH031694-01

Size / count

100 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

SerpinA3, also known as Alpha 1-antichymotrypsin (AACT), is a plasma alpha globulin glycoprotein, and is a member of serpin superfamily of the serine protease inhibitors consisting of at least 35 members. SerpinA3 has been demonstrated to inhibit the activity of certain serine proteases, such as cathepsin G found in neutrophils, and chymases present in mast cells, by inducing a major conformational rearrangement, and thus protects some tissues from damage caused by proteolytic enzymes. This enzyme is produced primarily in the liver, and is identified as an acute-phase inflammatory protein. SerpinA3 deficiency has been associated with liver disease, and mutations of this gene have been observed in patients with Parkinson disease and chronic obstructive pulmonary disease. In addition, ACT gene polymorphism has been implicated with Alzheimer’s disease (AD), cerebral amyloid angiopathy (CAA), as well as stroke, since SerpinA3 is a major constituent of the plaques in AD and an inhibitor of amyloid beta peptide degradation.

Synonyms

AACT; ACT; Alpha-1-Antichymotrypsin; Cell Growth-Inhibiting Gene 24/25 Protein; GIG24; GIG25; MGC88254; SERPINA3; Serpin A3

UniProt

P01011

Accession Number

NP_001076.2

Expression System

HEK293 Cells

Tag

C-His

Sequence

Met 1-Ala 423

Applications

Enzyme

Field of Research

Cell biology; Cardiovascular; Neuroscience

Endotoxin

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

Purity

> 97 % as determined by reducing SDS-PAGE.

Bioactivity

Measured by its ability to inhibit trypsin cleavage of a fluorogenic peptide substrate, Mca-RPKPVE-Nval-WRK (Dnp) -NH2 (Anaspec, Catalog# 27114) . The IC50 value is < 5 nM.

Reconstitution

Please refer to the printed manual for detailed information.

Shipping Conditions

This product is provided as lyophilized powder which is shipped with ice packs.

Storage Conditions

Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80°C. Reconstituted protein solution can be stored at 4-8°C for 2-7 days. Aliquots of reconstituted samples are stable at < -20°C for 3 months.

Calculated Molecular Weight

46.5 kDa

Observed Molecular Weight

45 kDa

Species

Human