021-67652117

— 全国咨询热线 —

多肽与蛋白>重组蛋白>细胞因子(重组人白细胞介素13)

  • 产品编号: HKM470

  • 产品分类:微生物试剂

浏览次数:251

Species Gene ID Accession Source Length MW Tag
Human 3596 P35225 E. coli 112aa 12.5kDa
About this protein
Name Recombinant Human IL-13 (Recombinant Human Interleukin-13; rHuIL-13);重组人白细胞介素13
Synonyms IL-13; P600
Purity >97% by SDS-PAGE and HPLC analyses.
Biological Activity Fully biologically active when compared to standard. The ED50 as determined by a cell proliferation assay using human TF-1 cells is less than 1ng/ml, corresponding to a specific activity of >1.0×106IU/mg.
Physical Appearance Sterile Filtered lyophilized (freeze-dried) liquid-like powder.
Formulation Lyophilized from a 0.2μm filtered concentrated solution in PBS, pH7.4 with 5% trehalose.
Endotoxin Less than 1EU/μg of rHuIL-13 as determined by LAL method.
Reconstitution We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Reconstitute in 20mM HCl to a concentration of 0.1-1.0mg/ml. Stock solutions should be apportioned into working aliquots and stored at ≤-20℃. Further dilutions should be made in appropriate buffered solutions.
Category Cytokine
Background Human Interleukin-13 (IL-13) is expressed by the IL13 gene located on the chromosome 5 and secreted by many cell types, especially T helper type 2 (Th2) cells. The high solution from of IL-13 reported to be a monomer with two internal disulfide bonds that contribute to a bundled four α-helix configuration. Targeted deletion of IL-13 in mice resulted in impaired Th2 cell development and indicated an important role for IL-13 in the expulsion of gastrointestinal parasites. IL-13 exerts antiinflammatory effects on monocytes and macrophages and it inhibits the expression of inflammatory cytokines such as IL-1beta, TNF-alpha, IL-6 and IL-8. IL-13 has also been shown to enhance B cell proliferation and to induce isotype switching resulting in increased production of IgE. Human, mouse and rat IL-3 share low homology, but have cross species activity.
Amino Acid Sequence GPVPPSTALR ELIEELVNIT QNQKAPLCNG SMVWSINLTA GMYCAALESL INVSGCSAIE KTQRMLSGFC PHKVSAGQFS SLHVRDTKIE VAQFVKDLLL HLKKLFREGR FN


包装清单:
 

产品编号 产品名称 包装
P5178-100μg Recombinant Human IL-13 100μg
  说明书 一份


保存条件:
-20℃或更低温度保存,至少一年有效。由于蛋白的每次冻融均会引起部分失活,所以首次配制成相应浓度的储存液后(请根据产品简介中Reconstitution一栏的信息配制储存液),须分装后-20℃或更低温度冻存,以避免反复冻融。

注意事项:
由于有些塑料管壁对某些蛋白有较强的吸附作用,溶液中的蛋白很容易粘附在管壁上,并且粘附后的蛋白很难与管壁分离。而载体蛋白(Carrier protein,如0.1% BSA等)的主要作用是预先封闭塑料管壁上的蛋白结合位点,使细胞因子或重组蛋白不会粘附于管壁。所以一定要使用产品简介中Reconstitution一栏的信息配制储存液。
本产品在冻干时添加了海藻糖作为保护剂,此时冻干后本产品看起来仍然像是液体,属于正常现象。在冻干工艺上,海藻糖作为常用的冻干保护剂,可显著阻止蛋白质二级结构的改变,防止冻干过程中的蛋白变性。
本产品仅限于专业人员的科学研究用,不得用于临床诊断或治疗,不得用于食品或药品,不得存放于普通住宅内。
为了您的安全和健康,请穿实验服并戴一次性手套操作。

使用说明:
1. 收到产品后请立即按照说明书推荐的条件保存。除非特别注明,相关产品均为冻干粉,由于微量的蛋白在冻干过程中沉积在管内,形成很薄或不可见的蛋白层,所以在打开管盖前,我们建议在离心机中约8,000-12,000g离心10-30秒,使附着在管盖或管壁上的蛋白聚集于管底。
2. 请根据实验目的并按照产品简介中Reconstitution一栏中的信息配制储存液。大多数细胞因子或重组蛋白的冻干粉是非常容易溶解的,一般用移液枪的枪头轻吹几下或者轻轻摇晃瓶子,即可使细胞因子或重组蛋白完全溶解。请勿用vortex剧烈振荡,以免蛋白变性而失活。
3. 具体的最佳工作浓度请自行参考相关文献,或者根据实验目的,以及特定细胞和动物,通过实验进行摸索和优化。

上海化科实验器材有限公司主要生产经营:实验室器材,玻璃仪器,实验室耗材,生物耗材,化学试剂,微生物试剂,样品瓶,包装瓶,实验室设备,仪器仪表等。
广泛服务于:科研,制药,生物,生命科学,教育,污水处理,食品与饮料,电子,轻工业,矿业,石油天然气,石油化学工业,工业品仪器,环保工程等行业。
公司网站:http://www.shhk.com.cn
订单邮箱:sales@shhk.com.cn(推荐)
咨询电话:021-67652117,57602161
QQ 在线:1152028600。