Recombinant Human POSTN/OSF-2 protein (His tag)

Specifications

Catalog number

PDEH100842-01

Size / count

20 µg

Dry ice

No

Hazardous

No

Discontinued

No

Background

Periostin (POSTN), also known as OSF2 (osteoblast specific factor 2), is a heterofunctional secreted extracellular matrix (ECM) protein comprised of four fasciclin domains that promotes cellular adhesion and movement, as well as collagen fibrillogenesis. Postn is expressed in unique growth centers during embryonic development where it facilitates epithelial-mesenchymal transition (EMT) of select cell populations undergoing reorganization. In the adult, Postn expression is specifically induced in areas of tissue injury or areas with ongoing cellular re-organization. In the adult heart Postn is induced in the ventricles following myocardial infarction, pressure overload stimulation, or generalized cardiomyopathy. Although the detailed function of Postn is still unclear, Postn-integrin interaction is thought to be involved in tumor development. Postn is frequently overexpressed in various types of human cancers, stimulating metastatic growth by promoting cancer cell survival, invasion and angiogenesis, and can be a useful marker to predict the behavior of cancer.

Abbreviation

POSTN; OSF-2

Synonyms

OSF-2; Osteoblast-specific factor 2; PDLPOSTN; PN; POSTN; Periostin; periostin

UniProt

Q15063

Accession Number

Q15063

Expression System

E.coli

Tag

N-His

Sequence

Pro 97-Leu 230

Field of Research

Signal Transduction; Tags & Cell Markers; Cardiovascular; Cancer

Endotoxin

< 10 EU/mg of the protein as determined by the LAL method.

Purity

> 95% as determined by reducing SDS-PAGE.

Bioactivity

Not validated for activity

Reconstitution

It is recommended that sterile water be added to the vial to prepare a stock solution of 0.5 mg/mL. Concentration is measured by UV-Vis.

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

14.6 kDa

Observed Molecular Weight

15 kDa

Species

Human