重組小鼠血管內皮生長因子-Sf9 (rmVEGF-Sf9)
- 型號:
- 更新時間: 2024-05-23
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產品介紹
CYT-226 | 重組小鼠血管內皮生長因子-Sf9 (rmVEGF-Sf9) | 2μg/10μg/1mg | Prospec |
Background: | |
Vascular endothelial growth factor-A was originally isolated from tumor cells and referred to as Tumor Angiogenesis Factor or Vascular Permeability Factor. Although expressed at high levels in certain tumor-derived cells it is produced by a wide variety of cell types. In addition to stimulating vascular growth and vascular permeability it may play a role in stimulating Vasolidation via nitric oxide-dependent pathways. Alternative splicing of the mRNA for VEGF-A results in several isoforms of the protein being produced. Rat and bovine VEGF are one amino acid shorter than the human factor, and the bovine and human sequences show a homology of 95 percent. In contrast to other factors mitogenic for endothelial cells such as FGF-1 , FGF-2 and PDGF, VEGF is synthesized as a precursor containing a typical hydrophobic secretory signal sequence of 26 amino acids. Glycosylation is not required for efficient secretion of VEGF. | |
Description : | |
Recombinant Mouse VEGF produced in Sf9 insect cells is a double, glycosylated, polypeptide chain containing 164 amino acids and having a molecular mass of 38814 Dalton. Recombinant Murine VEGF is purified by proprietary chromatographic techniques. | |
Physical Appearance: | |
Sterile Filtered White lyophilized (freeze-dried) powder. | |
Formulation: | |
The protein was lyophilized from a concentrated (1mg/ml) solution with no additives. | |
Solubility: | |
It is recommended to reconstitute the lyophilized VEGF-Sf9 in sterile 18MΩ-cm H2O not less than 100µg/ml, which can then be further diluted to other aqueous solutions. | |
Stability: | |
Lyophilized Recombinant VEGF-Sf9 although stable at room temperature for 3 weeks, should be stored desiccated below -180C. Upon reconstitution Murine VEGF-Sf9 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 prevent 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. | |
Dimers and aggregates: | |
Less than 1% as determined by silver-stained SDS-PAGE gel analysis. | |
Biological Activity: | |
ProSpec’s Recombinant Mouse VEGF-Sf9 is fully biologically active when compared to standards. Determined by the dose-dependent stimulation of the proliferation of human umbilical vein endothelial cells (HUVEC) using a concentration range of 1.0-2.0 ng/ml, corresponding to a specific activity of 1 x 106 Units/mg. | |
Endotoxin: | |
Less than 0.1 ng/µg (IEU/µg) of VEGF-Sf9. | |
Protein content: | |
Protein quantitation was carried out by two independent methods: 1. UV spectroscopy at 280 nm. 2. Analysis by RP-HPLC, using a calibrated solution of VEGF as a Reference Standard. | |
Usage: | |
This material is offered by ProSpec-TechnoGene for research, laboratory or further evaluation purposes. |
佰易聚生物商城提供美國光譜醫學透析袋,wako生化試劑,amresco生化試劑,sigma生化試劑,優質的分子生物學試劑和試劑盒、培養基本和培養耗材、細胞因子和細胞分離液、抗體和elisa試劑盒及常用生物試劑等,大量現貨火爆*,歡迎登錄 www.ebioeasy.com或者,,洽談選購!
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