| 货号 | MAB13361-SP |
| 别名 | IDDM2; ILPR; insulin; IRDN; MODY10; proinsulin |
| 反应种属 | Human/Mouse |
| 应用 | Immunocytochemistry(8-25 µg/mL) Intracellular Staining by Flow Cytometry(2.5 µg/106cells) |
| 目标/特异性 | Detects human and mouse Proinsulin. Does not detect mature insulin. |
| 使用方法 | Immunocytochemistry: 8-25 µg/mL Intracellular Staining by Flow Cytometry: 2.5 µg/106cells |
| 来源 | Reconstitute at 0.5 mg/mL in sterile PBS. |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 3630 (Human); 16333 (Mouse) |
| 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. Sox17 regulates insulin secretion in the normal and pathologic mouse beta cell. | |
| 纯化方式 | Protein A or G purified from hybridoma culture supernatant |
| 免疫原 | E. coli-derived recombinant human Proinsulin Phe25-Asn110 Accession # P01308 |
| 生物活性 | Human, Mouse |
| 标记 | Unconjugated |
| 溶解方法 | Reconstitute at 0.5 mg/mL in sterile PBS. |
| 背景 | Proinsulin is synthesized as a single chain, 110 amino acid (aa) preproprecursor that contains a 24 aa signal sequence and an 86 aa proinsulin propeptide. Following removal of the signal peptide, the proinsulin peptide undergoes further proteolysis to generate mature insulin, a 51 aa disulfide-linked dimer that consists of a 30 aa B chain (aa 25‑54) bound to a 21 aa A chain (aa 90‑110). The 34 aa intervening peptide (aa 55‑89) that connects the B and A chains is termed the C-peptide. Human proinsulin shares 84% and 80% aa sequence identity with rat and bovine proinsulin, respectively. Most of the sequence variation between species occurs in the region of the C-peptide (1). This peptide generates a structural conformation that allows for the correct formation of the intrachain disulphide bonds (1). Insulin is a molecule that facilitates the cellular uptake of glucose. This is accomplished by regulating the appearance of membrane glucose transporters. Low insulin levels or lack of insulin are associated with type 2 and type 1 diabetes mellitus, respectively. These conditions are associated with an increased risk for microvascular complications such as retinopathy, nephropathy, and peripheral neuropathy (3). Proinsulin also circulates, but its physiologic role is less well understood. It does possess about 25% of the activity of mature insulin, but it would seem unlikely to be a natural substitute for insulin (4). In type 2 diabetes, an elevated proinsulin to insulin ratio in the circulation is a well-known abnormality (5‑9). Perhaps this abnormality represents either compromised proteolytic processing or a general inability to process increased levels of insulin precursor (5). In any event, proinsulin will stimulate amylin secretion by beta -cells, and amyloid formation in pancreatic islets that promotes decreased beta cell function (10). Studies also suggest that fasting serum proinsulin may be a better predictor of future type 2 diabetes than fasting insulin levels in obese children (11). |
| 运输条件 | Blue Ice |
| 存放说明 | 4℃ |
| 参考文献 |
|
Proinsulin in beta TC-6 Mouse Cell Line. Proinsulin was detected in immersion fixed beta TC-6 mouse beta cell insulinoma cell line using Mouse Anti-Human/Mouse Proinsulin Monoclonal Antibody (Catalog # MAB13361) at 10 µg/mL for 3 hours at room temperature. Cells were stained using the NorthernLights™ 557-conjugated Anti-Mouse IgG Secondary Antibody (red; Catalog # NL007) and counterstained with DAPI (blue). Specific staining was localized to cytoplasm. View our protocol for Fluorescent ICC Staining of Cells on Coverslips. |
