Biotinylated Human DLL4 Protein, His,Avitag?, premium grade

分子別名（Synonym）

DLL4,Delta4

表達(dá)區(qū)間及表達(dá)系統(tǒng)（Source）

Biotinylated Human DLL4, His,Avitag, premium grade (DL4-H82E6) is expressed from human 293 cells (HEK293). It contains AA Ser 27 - Pro 524 (Accession # NP_061947.1).

Predicted N-terminus: Ser 27

該產(chǎn)品是在我們嚴(yán)格的質(zhì)量控制體系下生產(chǎn)的，該體系包含一套全面的測試，包括無菌和內(nèi)毒素測試。在早期臨床前階段，產(chǎn)品性能經(jīng)過仔細(xì)驗(yàn)證和測試，以確保其與細(xì)胞培養(yǎng)用途或任何其他應(yīng)用的兼容性。當(dāng)準(zhǔn)備過渡到后期臨床階段時(shí)，我們還提供定制的GMP蛋白質(zhì)服務(wù)，以滿足您的需求。我們將與您合作，根據(jù)您的要求定制和開發(fā)GMP級產(chǎn)品，該產(chǎn)品也符合細(xì)胞療法細(xì)胞制造中使用的原材料和輔助材料的要求。

蛋白結(jié)構(gòu)（Molecular Characterization）

This protein carries a polyhistidine tag at the C-terminus, followed by an Avi tag (Avitag?).

The protein has a calculated MW of 57.9 kDa. The protein migrates as 61 kDa±3 kDa when calibrated against Star Ribbon Pre-stained Protein Marker under reducing (R) condition (SDS-PAGE) due to glycosylation.

標(biāo)記（Labeling）

Biotinylation of this product is performed using Avitag? technology. Briefly, the single lysine residue in the Avitag is enzymatically labeled with biotin.

蛋白標(biāo)記度（Biotinylation）

As determined by Quantative ELISA binding assay against streptavidin.

內(nèi)毒素（Endotoxin）

Less than 0.01 EU per μg by the LAL method.

宿主蛋白殘留（Host Cell Protein）

<0.5 ng/μg of protein tested by ELISA.

宿主核酸殘留（Host Cell DNA）

<0.02 ng/μg of protein tested by qPCR.

無菌（Sterility）

Negative

支原體（Mycoplasma）

Negative.

純度（Purity）

>95% as determined by SDS-PAGE.

制劑（Formulation）

Lyophilized from 0.22 μm filtered solution in PBS, pH7.4 with trehalose as protectant.

Contact us for customized product form or formulation.

重構(gòu)方法（Reconstitution）

Please see Certificate of Analysis for specific instructions.

For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.

存儲(chǔ)（Storage）

For long term storage, the product should be stored at lyophilized state at -20°C or lower.

Please avoid repeated freeze-thaw cycles.

This product is stable after storage at:

-20°C to -70°C for 24 months in lyophilized state;

-70°C for 3 months under sterile conditions after reconstitution.

背景（Background）

德爾塔樣蛋白4（DLL4）也被稱為果蠅德爾塔同源物4（Delta4），它包含一個(gè)DSL結(jié)構(gòu)域和八個(gè)EGF樣結(jié)構(gòu)域。DLL4在血管內(nèi)皮中表達(dá)。DLL4作為Notch配體參與Notch信號(hào)通路，可以激活NOTCH1和NOTCH4。DLL4參與血管生成，并負(fù)調(diào)控內(nèi)皮細(xì)胞增殖和遷移以及血管生成發(fā)芽。DLL4可以與Notch-1和Notch-4結(jié)合。