重組人血管生成素-2（rHuANG-2）
- 型號(hào)：
- 更新時(shí)間： 2025-02-12
- 上一個(gè)：重組人血管生成素-1（rHuANG-1）
- 下一個(gè)：重組人血管生成素樣蛋白-3（rHuANGPTL3）
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產(chǎn)品介紹
| CYT-414 | 重組人血管生成素-2（rHuANG-2） | 2μg/10μg/1mg | Prospec |
| Background: | |
| The angiopoietin （Ang） family of growth factors includes four members, all of which bind to the endothelial receptor tyrosine kinase Tie2. Two of the Angs, Ang-1 and Ang-4, activate the Tie2 receptor, whereas Ang-2 and Ang-3 inhibit Ang-1-induced Tie2 phosphorylation. Angiopoietin-1 （Ang-1） is a secreted growth factor which binds to and activates the Tie-2 receptor tyrosine kinase. The factor enhances endothelial cell survival and capillary morphogenesis, and also limits capillary permeability. Ang-2 binds the same receptor but fails to activate it: hence, it is a natural inhibitor of Ang-1. Ang-2 destabilises capillary integrity, facilitating sprouting when ambient vascular endothelial growth factor （VEGF） levels are high, but causing vessel regression when VEGF levels are low. Tie -1 is a Tie -2 homologue but its ligands are unknown. Angiopoietin and Tie genes are expressed in the mammalian metanephros, the precursor of the adult kidney, where they may play a role in endothelial precursor growth. | |
 | Description: |
| Human Angiopoitin-2 （Ang-2）, a 66 kDa protein consisting of 476 amino acid residues （21-496）, is fused to a N-terminal myc-tag and produced in insect cells. | |
| Physical Appearance: |
| Sterile Filtered white lyophilized freeze dry powder. | |
| Formulation: |
| The protein is formulated with no additives. | |
| Solubility: |
| It is recommended to reconstitute the lyophilized Recombinant Human ANG-2 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions. | |
| Stability: |
| Lyophilized Recombinant Human Angiopoietin-2 although stable at room temperature for 3 weeks, should be stored desiccated below -180C. Upon reconstitution Recombinant Ang-2 should be stored at 40C between 2-7 days and for future use below -180C. For long term storage it is recommended to add a carrier protein （0.1% HSA or BSA）. Please avoid freeze-thaw cycles. | |
| Purity: |
| Greater than 95.0% as determined by: （a） Analysis by RP-HPLC. （b） Anion-exchange FPLC. （c） Analysis by reducing and non-reducing SDS-PAGE Silver Stained gel. | |
| Biological Activity: |
| The biological activity was determined by the induction of endothelial cell sprouting as described in Korff et al., 2001. | |
| Endotoxin: |
| Less than 0.1 ng/µg （IEU/µg） of rHuANG-2. | |
| Protein content: |
| Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm using the absorbency value of 1.4 as the extinction coefficient for a 0.1% （1mg/ml） solution. This value is calculated by the PC GENE computer analysis program of protein sequences （InliGenetics）. 2. Analysis by RP-HPLC, using a standard solution of ANG-1 as a Reference Standard. | |
| Usage: |
| Prospec's products are furnished for LABORATORY RESEARCH USE ONLY. The product may not be used as drugs, agricultural or pesticidal products, food additives or household chemicals. |
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