货号 | AF2955-SP |
别名 | Fasciclin I-like; MGC119510; MGC119511; OSF-2; OSF-2osteoblast specific factor 2 (fasciclin I-like); OSF2periodontal ligament-specific periostin; Osteoblast-specific factor 2; PDLPOSTN; periostin isoform thy2; periostin isoform thy4; periostin isoform thy6; periostin isoform thy8; periostin; periostin, osteoblast specific factor; PNRP11-412K4.1; POSTN; TRIF52 | 全称 | Osteoblast Specific Factor 2 |
反应种属 | Mouse |
应用 | Western Blot(0.1 µg/mL) Immunocytochemistry(5-15 µg/mL) |
目标/特异性 | Detects mouse Periostin/OSF‑2 in direct ELISAs and Western blots. In direct ELISAs, approximately 50% cross-reactivity with recombinant rat Periostin/OSF-2 and less than 20% cross-reactivity with recombinant human Periostin/OSF-2 is observed. |
使用方法 | Western Blot: 0.1 µg/mL Immunocytochemistry: 5-15 µg/mL Neutralization: Measured by its ability to neutralize Periostin/OSF‑2-mediated adhesion of the ATDC5 mouse chondrogenic cell line. The Neutralization Dose (ND50) is typically 1-5 µg/mL in the presence of 5 µg/mL Recombinant Mouse Periostin/OSF‑2. |
来源 | Polyclonal Goat IgG |
产品组分 |
供应商 | R&D Systems |
Entrez Gene IDs | 10631 (Human); 50706 (Mouse); 361945 (Rat) |
应用文献 | |
R&D Systems personnel manually curate a database that contains references using R&D Systems products. The data collected includes not only links to publications in PubMed, but also provides information about sample types, species, and experimental conditions. Macrophage-secreted granulin supports pancreatic cancer metastasis by inducing liver fibrosis | |
纯化方式 | Antigen Affinity-purified |
免疫原 | S. frugiperda insect ovarian cell line Sf 21-derived recombinant mouse Periostin/OSF‑2 Asn24-Gln811 Accession # Q62009 |
内毒素水平 | <0.10 EU per 1 μg of the antibody by the LAL method. |
生物活性 | Mouse |
标记 | Unconjugated |
溶解方法 | Reconstitute at 0.2 mg/mL in sterile PBS. |
背景 | Mouse Periostin, also known as OSF-2 (osteoblast-specific factor 2) is a 170 kDa, secreted, homodimeric protein that belongs to the periostin family of the FAS1 superfamily of molecules (1‑4). It is a TGF-beta inducible molecule that serves as both an adhesion molecule and tumor suppressor (2, 5, 6, 7). It is synthesized as a 838 amino acid (aa) precursor that contains a 23 aa signal sequence and an 815 aa mature region (2, 8). It is unknown if the molecule has any significant glycosylation (2). Based on human OSF-2, the homodimer is not disulfide-linked (3). The molecule consists of two distinct regions. The N-terminus contains an 55 aa EMI domain, while the C-terminus contains four, 130 aa fasciculin type 1 (or FAS1) domains. The EMI domain is cysteine-rich and shows a highly basic alpha -helix (9). Each FAS1 repeat exhibits a novel 7-stranded beta -wedge with a multiple alpha -helix fold (1, 8). Multiple alternate splice forms are known to exist C-terminal (aa 672‑812) to the four-fold FAS1 repeats. These mature molecules are 760, 761, 787 and 788 aa in length and show block deletions of 54 aa, 27 aa and/or 28 aa (10). The significance of the alternate splice forms is not clear. They do, however, appear to be temporally regulated (6). OSF-2 is known to bind to alpha vbeta3 and alpha vbeta5 integrins (3). It is synthesized by smooth muscle cells, fibroblasts and osteoblasts (2, 5, 7). Mature mouse OSF-2 shares 98%, 92% and 91% aa identity with rat, canine and human OSF‑2, respectively. |
运输条件 | Blue Ice |
存放说明 | 4℃ |
参考文献 |
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Cell Adhesion Mediated by Periostin/OSF‑2 and Neutralization by Mouse Periostin/ OSF‑2 Antibody. Recombinant Mouse Periostin/OSF‑2 (Catalog # 2955‑F2), immobilized onto a microplate, supports the adhesion of the ATDC5 mouse chondrogenic cell line in a dose-dependent manner (orange line). Adhesion elicited by Recombinant Mouse Periostin/OSF‑2 (5 µg/mL) is neutralized (green line) by increasing concentrations of Goat Anti-Mouse Periostin/ OSF‑2 Isoform 2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2955). The ND50 is typically 1-5 µg/mL. | |
Periostin/OSF‑2 in Rat Mesenchymal Stem Cells. Periostin/OSF‑2 was detected in immersion fixed rat mesenchymal stem cells differentiated to osteoblasts using Goat Anti-Mouse Periostin/OSF‑2 Isoform 2 Antigen Affinity-purified Polyclonal Antibody (Catalog # AF2955) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Goat IgG Secondary Antibody (red; Catalog # NL001) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips. |