Recombinant Human Cystatin S/CST4 Protein (His Tag)

Product Specifications

Background

Cystatin-S, also called Cystatin-SA-III or Salivary acidic protein, is usually expressed in submandibular and sublingual saliva but not in parotid saliva (at protein level) . This protein, which is phosphorylated at both its N- and C-terminal regions, belongs to the cystatin family. Cystatin-S can function as an inhibitor to papain or ficin, it partially inhibits stem bromelain and bovine cathepsin C.

Abbreviation

Cystatin S; CST4

Synonyms

CST4; Cystatin-4; Cystatin-S; Cystatin-SA-III; Salivary Acidic Protein 1

UniProt

P01036

Accession Number

P01036

Expression System

HEK293 Cells

Tag

C-His

Sequence

Ser21-Ala141

Field of Research

Cell biology; immunology

Endotoxin

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

Purity

> 95 % as determined by reducing SDS-PAGE.

Bioactivity

Not validated for activity

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.