- ￥1350 - 3000
- Proteintech
- 15274-1-AP
- 2025年10月13日
- WB, IHC, ELISA
- Rabbit
- human, mouse, rat, pig
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- 详细信息
- 文献和实验
- 技术资料
- 免疫原：
Recombinant human SPARC protein
- 亚型：
IgG
- 保存条件：
Store at -20°C. Stable for one year after shipment.
- 克隆性：
Polyclonal
- 标记物：
Unconjugated
- 适应物种：
human, mouse, rat, pig
- 保质期：
详见产品包装
- 库存：
充足
- 宿主：
Rabbit
- 应用范围：
WB, IHC, ELISA
- 靶点：
SPARC
- 抗体英文名：
SPARC Polyclonal antibody
- 抗体名：
SPARC Polyclonal antibody
- 规格：
50ul/100ul/150ul
| 规格： | 50ul | 产品价格： | ￥1350.0 |
|---|---|---|---|
| 规格： | 100ul | 产品价格： | ￥2200.0 |
| 规格： | 150ul | 产品价格： | ￥3000.0 |
经过测试的应用
| Positive WB detected in | A375 cells, human testis tissue, ROS1728 cells, human placenta tissue |
| Positive IHC detected in | human stomach cancer tissue Note: suggested antigen retrieval with TE buffer pH 9.0; (*) Alternatively, antigen retrieval may be performed with citrate buffer pH 6.0 |
推荐稀释比
| 应用 | 推荐稀释比 |
|---|---|
| Western Blot (WB) | WB : 1:1000-1:8000 |
| Immunohistochemistry (IHC) | IHC : 1:1000-1:4000 |
| It is recommended that this reagent should be titrated in each testing system to obtain optimal results. | |
| Sample-dependent, Check data in validation data gallery. | |
产品信息
15274-1-AP targets SPARC in WB, IHC, IF, CoIP, ELISA applications and shows reactivity with human, mouse, rat, pig samples.
| 经测试应用 | WB, IHC, ELISA |
| 文献引用应用 | WB, IHC, IF, CoIP |
| 经测试反应性 | human, mouse, rat, pig |
| 文献引用反应性 | human, mouse, rat, deer, sika deer |
| 免疫原 |
CatNo: Ag7390 Product name: Recombinant human SPARC protein Source: e coli.-derived, PGEX-4T Tag: GST Domain: 1-303 aa of BC004974 Sequence: MRAWIFFLLCLAGRALAAPQQEALPDETEVVEETVAEVTEVSVGANPVQVEVGEFDDGAEETEEEVVAENPCQNHHCKHGKVCELDENNTPMCVCQDPTSCPAPIGEFEKVCSNDNKTFDSSCHFFATKCTLEGTKKGHKLHLDYIGPCKYIPPCLDSELTEFPLRMRDWLKNVLVTLYERDEDNNLLTEKQKLRVKKIHENEKRLEAGDHPVELLARDFEKNYNMYIFPVHWQFGQLDQHPIDGYLSHTELAPLRAPLIPMEHCTTRFFETCDLDNDKYIALDEWAGCFGIKQKDIDKDLVI |
| 宿主/亚型 | Rabbit / IgG |
| 抗体类别 | Polyclonal |
| 产品类型 | Antibody |
| 全称 | secreted protein, acidic, cysteine-rich (osteonectin) |
| 别名 | Osteonectin, ON, BM-40, BM 40, Basement-membrane protein 40 |
| 计算分子量 | 35 kDa |
| 观测分子量 | 35-43 kDa |
| GenBank蛋白编号 | BC004974 |
| 基因名称 | SPARC |
| Gene ID (NCBI) | 6678 |
| RRID | AB_2194961 |
| 偶联类型 | Unconjugated |
| 形式 | Liquid |
| 纯化方式 | Antigen affinity purification |
| UNIPROT ID | P09486 |
| 储存缓冲液 | PBS with 0.02% sodium azide and 50% glycerol, pH 7.3. |
| 储存条件 | Store at -20°C. Stable for one year after shipment. Aliquoting is unnecessary for -20oC storage. |
背景介绍
Secreted Protein Acidic And Cysteine Rich (SPARC), also known as osteonectin or basement-membrane protein 40 (BM-40), is a secreted protein essential in the calcification of bone.
What is the molecular weight of SPARC?
The calculated molecular mass of SPARC is 35 kDa. SPARC is a glycoprotein consisting of 303 amino acids in the cytoplasm and 286 amino acids after the signal sequence is cleaved in secretion.
Where is SPARC expressed?
Osteoblasts secrete SPARC during bone formation, with high levels found in immature bone compared to mature bone that is in homeostasis (PMID: 2440898). SPARC is also secreted in adult mineralized tissues that have high turnover, such as osteoid and dentin, by cells other than osteoblasts. This includes bone marrow progenitor cells and hypertrophic chondrocytes but also endothelial cells and fibroblasts.
Though previously described as being exclusively expressed in mineralized tissue, it is now understood that SPARC is more widely expressed and is associated with high levels of collagen deposition, found in the extracellular matrix (ECM) of a number of tissues.
What is the function of SPARC?
SPARC contains both a collagen-binding domain and a hydroxyapatite (HA) binding region, so is thought to enhance mineralization by binding both collagen and HA crystals, causing the release of calcium ions (PMID: 26851678).
SPARC can bind to a number of different ECM proteins, particularly collagen, and may even influence the assembly of these proteins (PMID: 19798598). It is known to regulate interactions between cells and the ECM, meaning it plays a role in many important processes such as cell migration and proliferation.
What diseases are associated with SPARC?
Overexpression of SPARC has been identified in a number of different types of cancers (PMID: 18849185), although its role may vary. For example, in neuroblastomas SPARC acts as a suppressor but in gliomas, it causes greater invasion of the tumor. Mutations in SPARC can also lead to Osteogenesis Imperfecta, also known as brittle bone disease (PMID: 26027498).
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文献和实验| Species | Application | Title |
|---|---|---|
| human | WB | ACS Appl Mater Interfaces Evidence for Delivery of Abraxane via a Denatured-Albumin Transport System.Authors - Maichi Hama |
| human | IHC | Cancer Discov PMID: 22585996Authors - Frese Kristopher K KK |
| human | WB,IF | Theranostics A 9-kDa matricellular SPARC fragment released by cathepsin D exhibits pro-tumor activity in the triple-negative breast cancer microenvironment.Authors - Lindsay B Alcaraz |
| rat | IHC | Clin Cancer Res The pancreas cancer microenvironment.Authors - Feig Christine C |
| human | IF | Int J Cancer Tissue-resident CXCR4+ macrophage as a poor prognosis signature promotes pancreatic ductal adenocarcinoma progressionAuthors - Zhenyu Liao |
| human | WB | Int J Mol Sci Identification of Overexpressed Genes in Malignant Pleural Mesothelioma.Authors - Federica Morani |
因此，综合来说，EarthOx的GST标签抗体 （货号#E022040）是一款同时具有高特异性、高灵敏度、多应用类型以及性价比的GST标签抗体。同时，我们也提供其他品牌的GST标签抗体，如Proteintech的GST多克隆抗体 ――GST PolyClonal Antibody（货号#10000-0-AP）以及Abcam、Santa等多种GST标签抗体产品。更多GST标签抗体以及其他如His、HA、Myc、GFP、Flag等其他标签抗体，请电话垂询。美国EarthOx品牌是一家提供高性价比免疫学和细胞
实验，请根据说明书列出已验证的种属来选择适合你实验的抗体。 （4）样本蛋白的结构性质。了解样本蛋白的结构性质有助于选择最合适的抗体，待测样本蛋白的结构域和样本在提取和处理过程中是否会变性，蛋白空间构象的改变，会影响抗体的免疫亲和反应。 （5）单多克隆抗体的选择。市面上的抗体还是以多克隆抗体为主，一般单克隆抗体特异性强，但亲和力相对小，检测抗原灵敏度相对就低；而多克隆抗体特异性稍弱，但抗体的亲和力强，灵敏度高，但易出现非特异性染色（可以通过封闭等避免
发生，最好在特异性抗体处理切片之前，选择与二抗种属相同的非免疫血清封闭电荷，阻止一抗与之结合，抑制非特异性背景着色。常用方法是用2%～10%羊血清或2%～5%牛血清白蛋白在室温下作用10~30分钟。但应注意此种结合不牢固，所以最好不要冲洗，倾去余液直接加一抗。SABC或SP免疫组织化学试剂盒中常配有非免疫血清。 7．第一抗体孵育 滴加特异性一抗于切片上，4℃孵育24～48小时，或室温孵育过夜，也可在37~C孵育1～2小时。之后，用PBS冲洗3次，每次5分钟。一抗分为多克隆抗体和单克
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