General description
Binds to heparin. Induces cell attachment and spreading and plays a role in cell adhesion. May play a role in extracellular matrix mineralization.
Periostin (POSTN) gene with 23 exons spanning 36 kb is mapped to chromosome 13q13.3. The gene codes for periostin, a matricellular protein that belongs to the family of non-structural matrix proteins. Periostin structure contains a signal peptide, four fasciclin-like domains (FAS1) with vitamin K-dependent γ-carboxyglutamic acid (Gla) residues, and hydrophilic C-terminal region with the heparin-binding site. The protein is mainly expressed in the periosteum, periodontal ligament, heart valves, and tendons. The antibody detects endogenous level of total periostin protein.
Immunogen
Peptide sequence around aa. 125-129 ( R-E-E-I-E), according to the protein NP_006466.2
Application
Anti-POSTN antibody produced in rabbit has been used in western blot.
Biochem/physiol Actions
Periostin (POSTN) facilitates extracellular matrix structure and organization. It acts as a collagen chaperone and regulates type I collagen fibrillogenesis. POSTN is implicated in early stages of bone formation, tissue repair, and cell recruitment and adhesion. This protein is essential for cancer stem cell maintenance and metastasis. Increased expression of POSTN has been observed in various types of cancers including prostate, breast, lung, pancreatic, ovarian, and colorectal cancer. Hence, the postn levels can be used as a prognostic biomarker for these cancers.
Features and Benefits
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Physical form
Solution in phosphate-buffered saline containing 0.02% sodium azide and 50% glycerol
Disclaimer
Unless otherwise stated in our catalog or other company documentation accompanying the product(s), our products are intended for research use only and are not to be used for any other purpose, which includes but is not limited to, unauthorized commercial uses, in vitro diagnostic uses, ex vivo or in vivo therapeutic uses or any type of consumption or application to humans or animals.
| biological source | rabbit |
| Quality Level | 100 |
| conjugate | unconjugated |
| antibody form | affinity isolated antibody |
| antibody product type | primary antibodies |
| clone | polyclonal |
| form | buffered aqueous solution |
| mol wt | ~93 kDa |
| species reactivity | rat, mouse, human |
| concentration | 1 mg/mL |
| technique(s) | western blot: 1:500-1:1000 |
| isotype | IgG |
| immunogen sequence | (R-E-E-I-E) |
| NCBI accession no. | NM_006475.2 |
| UniProt accession no. | Q15063 |
| shipped in | wet ice |
| storage temp. | −20°C |
| target post-translational modification | unmodified |
| Gene Information | mouse ... Postn(50706) |
