Synonyms
|
SCYE1, EMAP-2, Small Inducible Cytokine Subfamily E Member 1
|
Species
|
Human
|
Accession
|
Q12904
|
GeneID
|
9255
|
Source
|
Escherichia coli.
|
Molecular Weight
|
重组人内皮单核细胞激活多肽II蛋白Approximately 18.2 kDa, a single non-glycosylated polypeptide chain containing 166 amino acids.
|
Quantity
|
5µg/20µg/1000µg
|
AA Sequence
|
SKPIDVSRLD LRIGCIITAR KHPDADSLYV EEVDVGEIAP RTVVSGLVNH VPLEQMQNRM VILLCNLKPA KMRGVLSQAM VMCASSPEKI EILAPPNGSV PGDRITFDAF PGEPDKELNP KKKIWEQIQP DLHTNDECVA TYKGVPFEVK GKGVCRAQTM SNSGIK
|
Purity
|
> 98 % by SDS-PAGE and HPLC analyses.
|
Biological Activity
|
重组人内皮单核细胞激活多肽II蛋白Fully biologically active when compared to standard. The ED50 as determined by the apoptotic effect using serum free human MCF-7 cells is less than 40 ng/ml, corresponding to a specific activity of > 2.5 × 104 IU/mg.
|
Physical Appearance
|
Sterile Filtered White lyophilized (freeze-dried) powder.
|
Formulation
|
Lyophilized from a 0.2 μm filtered concentrated solution in PBS, pH 7.4.
|
Endotoxin
|
Less than 1 EU/μg of rHuEMAP-II as determined by LAL method.
|
Reconstitution
|
重组人内皮单核细胞激活多肽II蛋白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
|
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.
|
重组人内皮单核细胞激活多肽II蛋白
|
|
SDS-PAGE
|
|
Reference
|
1. Awasthi N, Schwarz MA, Schwarz RE. 2010. Cancer Biol Ther, 10: 99-107.
2. Journeay SandSingh B. 2007. Acta Neuropathol, 114: 435; author reply 7-8.
3. Clarijs R, Schalkwijk L, Ruiter DJ, et al. 2003. Invest Ophthalmol Vis Sci, 44: 1801-6.
4. Kayton MLandLibutti SK. 2001. Curr Opin Investig Drugs, 2: 136-8.
|
Background
|
Endothelial-Monocyte Activating Polypeptide II (EMAP-II) is a tumor derived cytokine that exerts a wide range of activities on endothelial cells, monocytes and neutrophils. EMAP-II inhibits endothelial cell proliferation, vasculogenesis, neovessel formation, and can induce apoptosis. It is also chemotactic towards neutrophils and monocytes and induces myeloperoxidase activity from neutrophils. Of clinical importance, EMAP-II inhibits angiogenesis of vascular beds and suppresses the growth of primary and secondary tumors without affecting normal tissues. Mature EMAP-II is an 18.3 kDa protein, which is synthesized as the C-terminal portion of a biologically inactive precursor protein containing a propeptide of 146 amino acid residues.
|