产品详情
简单介绍：
重组人干扰素-α2a蛋白与其它公司提供的重组蛋白不同，rHuIFN-α2a蛋白产品为采用CFS的无细胞麦胚蛋白合成系统表达出来的重组蛋白，可表达出对细胞有毒性、易被蛋白酶降解的蛋白；并获得具有良好的可溶性，并有翻译后修饰、从而部分具有功能的蛋白.同时独有的全自动蛋白纯化技术则简便高效，将蛋白纯化过程中对蛋白的损伤降低到*小程度.重组人干扰素-α2a蛋白（全长序列）产品可用于Western Blot验证、抗体制备、蛋白检测、ELISA等试验中.
详情介绍：
重组人干扰素-α2a蛋白
| Species | Human |
| Accession | P01563 |
| GeneID | 3440 |
| Source | Yeast |
| Molecular Weight | Approximately 19.2 kDa, a single non-glycosylated polypeptide chain containing 165 amino acids. |
| Quantity | 20µg/100µg/1000µg |
| AA Sequence | 重组人干扰素-α2a蛋白CDLPQTHSLG SRRTLMLLAQ MRKISLFSCL KDRHDFGFPQ EEFGNQFQKA ETIPVLHEMI QQIFNLFSTK DSSAAWDETL LDKFYTELYQ QLNDLEACVI QGVGVTETPL MKEDSILAVR KYFQRITLYL KEKKYSPCAW EVVRAEIMRS FSLSTNLQES LRSKE |
| Purity | > 97 % by SDS-PAGE and HPLC analyses. |
| Biological Activity | Fully biologically active when compared to standard. The specific activity determined by an anti-viral assay is no less than 1.0 × 108IU/mg. |
| Physical Appearance | Sterile Filtered White lyophilized (freeze-dried) powder. |
| Formulation | 重组人干扰素-α2a蛋白Lyophilized from a 0.2 µm filtered solution in PBS, pH 7.4. |
| Endotoxin | Less than 1 EU/µg of rHuIFN-α2a as determined by LAL method. |
| Reconstitution | We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in sterile distilled water or aqueous buffer containing 0.1 % BSA to a concentration of 0.1-1.0 mg/mL. Stock solutions should be apportioned into working aliquots and stored at ≤ -20 °C. Further dilutions should be made in appropriate buffered solutions. |
| Storage | 重组人干扰素-α2a蛋白This lyophilized preparation is stable at 2-8 °C, but should be kept at -20 °C for long term storage, preferably desiccated. Upon reconstitution, the preparation is stable for up to one week at 2-8 °C. For maximal stability, apportion the reconstituted preparation into working aliquots and store at -20 °C to -70 °C. Avoid repeated freeze/thaw cycles. |
| 重组人干扰素-α2a蛋白 | |
| SDS-PAGE |  |
| Reference | 1. Tarhini AA, Gogas H, Kirkwood JM. 2012. J Immunol, 189: 3789-93. 2. Zarogoulidis P, Kioumis I, Papanas N, et al. 2012. J Chemother, 24: 173-7. 3. Tohyama M, Yang L, Hanakawa Y, et al. 2012. J Invest Dermatol, 132: 1933-5. 4. Corssmit EP, Heijligenberg R, Hack CE, et al. 1997. Clin Exp Immunol, 107: 359-63. |
| Background | IFN-αs are proteins secreted by leukocyte. They are mainly involved in innate immune response against viral infection. The IFN-α family has 13 subtypes and 23 different variants. The individual proteins have molecular masses between 19-26 kDa and consist of proteins with lengths of 156-166 and 172 amino acids. All IFN-α subtypes possess a common conserved sequence region between amino acid positions 115-151 while the amino-terminal ends are variable. Many IFN-alpha subtypes differ in their sequences at only one or two positions. Naturally occurring variants also include proteins truncated by 10 amino acids at the carboxy-terminal end. |
