Animal-Free IL-23 p19 蛋白, Human (His)

IL-23, collaborating with IL12B, constitutes the pro-inflammatory cytokine IL-23, crucial in innate and adaptive immunity. Released by antigen-presenting cells like dendritic cells or macrophages, IL-23 binds to IL12RB1 and IL23R, activating JAK2 and TYK2. This cascade phosphorylates STAT3 and STAT4, activating pathways like p38 MAPK or NF-kappa-B, inducing pro-inflammatory cytokines. IL-23 contributes to intracellular bacterial clearance and supports the expansion of T-helper 17 cells, including IL-17 producers. The disulfide-linked IL-23 interacts with IL12B and IL23R, recruiting IL12RB1. Animal-Free IL-23 p19 Protein, Human (His) is the recombinant human-derived animal-FreeIL-23 p19 protein, expressed by E. coli, with N-His labeled tag. The total length of Animal-Free IL-23 p19 Protein, Human (His) is 170 a.a., with molecular weight of ~19.49 kDa.

IL-23 与 IL12B 协同形成促炎细胞因子 IL-23，在先天免疫和适应性免疫中发挥多种作用。IL-23 由树突状细胞或巨噬细胞等抗原呈递细胞释放，与包含 IL12RB1 和 IL23R 的异二聚体受体复合物结合，启动涉及 JAK2 和 TYK2 激活的级联反应。这些激酶磷酸化受体，为随后的 STAT3 和 STAT4 磷酸化创建对接位点。该过程激活多种途径，包括 p38 MAPK 或 NF-kappa-B，促进促炎细胞因子的产生，例如 IL-17A/IL17A。此外，IL-23 积极参与细胞内细菌的早期有效清除。值得注意的是，IL-23 促进 T 辅助细胞 17 细胞的扩增和存活，T 辅助细胞 17 是一种以产生 IL-17 的 CD4 阳性辅助 T 细胞亚群，以及其他产生 IL-17 的细胞。IL-23 与 IL12B 的异二聚体（称为白细胞介素 IL-23）是二硫键连接的。此外，IL-23 与 IL23R 相互作用，促进 IL12RB1 的募集。

Measured by its ability to induce IL-17 secretion in mouse splenocytes. The ED₅₀ for this effect is <0.5 ng/mL.

Human

E. coli

N-His

Q9NPF7 (R20-P189)

51561  [NCBI]

RAVPGGSSPAWTQCQQLSQKLCTLAWSAHPLVGHMDLREEGDEETTNDVPHIQCGDGCDPQGLRDNSQFCLQRIHQGLIFYEKLLGSDIFTGEPSLLPDSPVGQLHASLLGLSQLLQPEGHHWETQQIPSLSPSQPWQRLLLRFKILRSLQAFVAVAARVFAHGAATLSP

Approximately 19.49 kDa

Greater than 95% as determined by reducing SDS-PAGE.

无菌粉末.

Lyophilized from a solution containing 1X PBS, pH 8.0.

<0.1 EU per 1 μg of the protein by the LAL method.

It is not recommended to reconstitute to a concentration less than 100 μg/mL in ddH₂O.

Stored at -20°C for 2 years. After reconstitution, it is stable at 4°C for 1 week or -20°C for longer (with carrier protein). It is recommended to freeze aliquots at -20°C or -80°C for extended storage.

Room temperature in continental US; may vary elsewhere.