| 货号 | BAF246 |
| 别名 | LAP (TGFbeta 1); LAP (TGF-beta 1) | 全称 | Latency-associated Peptide |
| 应用 | Western Blot |
| 目标/特异性 | Detects human LAP TGF-beta 1 in Western blots. In this format, less than 1% cross-reactivity with mature recombinant human (rh) TGF‑ beta 1, porcine TGF‑ beta 2, rhTGF‑ beta 3, and recombinant amphibian TGF‑ beta 5 is observed. |
| 使用方法 | Western Blot: 0.1 µg/mL |
| 来源 | Reconstitute at 0.2 mg/mL in sterile PBS. |
| 产品组分 |
| 供应商 | R&D Systems |
| Entrez Gene IDs | 7040 (Human) |
| 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. Lysosomal-associated Transmembrane Protein 4B (LAPTM4B) Decreases Transforming Growth Factor beta1 (TGF-beta1) Production in Human Regulatory T Cells. | |
| 纯化方式 | Antigen Affinity-purified |
| 免疫原 | S. frugiperda insect ovarian cell line Sf 21-derived recombinant human LAP TGF‑ beta 1 and Chinese hamster ovary cell line CHO-derived recombinant human LAP TGF‑ beta 1 Leu30-Ser390 Accession # P01137 |
| 生物活性 | Human |
| 标记 | Biotin |
| 溶解方法 | Reconstitute at 0.2 mg/mL in sterile PBS. |
| 背景 | TGF-beta 1 (transforming growth factor beta 1) and the closely related TGF-beta 2 and -beta 3 are members of the large TGF-beta superfamily. TGF- beta proteins are highly pleiotropic cytokines that regulate processes such as immune function, proliferation and epithelial-mesenchymal transition (1-3). Human TGF-beta 1 cDNA encodes a 390 amino acid (aa) precursor that contains a 29 aa signal peptide and a 361 aa proprotein (4). A furin-like convertase processes the proprotein within the trans-Golgi to generate an N‑terminal 249 aa (aa 30-278) latency-associated peptide (LAP) and a C-terminal 112 aa (aa 279-390) mature TGF- beta 1 (4-6). Disulfide-linked homodimers of LAP and TGF-beta 1 remain non‑covalently associated after secretion, forming the small latent TGF-beta 1 complex (4-8). Purified LAP is also capable of associating with active TGF-beta with high affinity, and can neutralize TGF-beta activity (9). Covalent linkage of LAP to one of three latent TGF-beta binding proteins (LTBPs) creates a large latent complex that may interact with the extracellular matrix (5‑7). TGF-beta activation from latency is controlled both spatially and temporally, by multiple pathways that include actions of proteases such as plasmin and MMP9, and/or by thrombospondin 1 or selected integrins (5, 8). The LAP portion of human TGF-beta 1 shares 91%, 92%, 85%, 86% and 88% aa identity with porcine, canine, mouse, rat and equine TGF-beta 1 LAP, respectively, while mature human TGF-beta 1 portion shares 100% aa identity with porcine, canine and bovine TGF-beta 1, and 99% aa identity with mouse, rat and equine TGF-beta 1. Although different isoforms of TGF-beta are naturally associated with their own distinct LAPs, the TGF-beta 1 LAP is capable of complexing with, and inactivating, all other human TGF-beta isoforms and those of most other species (9). Mutations within the LAP are associated with Camurati-Engelmann disease, a rare sclerosing bone dysplasia characterized by inappropriate presence of active TGF-beta 1 (10). |
| 运输条件 | Blue Ice |
| 存放说明 | -20℃ |
| 参考文献 |
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