Recombinant Human LAG3/CD223 Protein (Fc Tag)
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- 表达系统： HEK293 Cells
- 蛋白编码： P18627
- 应用性： ELISA
| 别称 |
Lymphocyte activation gene 3 protein;LAG3;LAG-3;Protein FDC;CD223;LAG-3
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| 表达系统 |
HEK293 Cells
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| 序列 |
Leu23-Leu450
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| 蛋白编码 |
P18627
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| 种属 |
Human
|
| 计算分子量 |
73.3 kDa
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| 表观分子量 |
70-90 kDa
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| 标签 |
C-Fc
|
| 生物活性 |
Immobilized Anti-Human LAG-3 mAb at 2μg/ml (100 μl/well)can bind Human LAG-3-Fc. The ED50 of Human LAG-3-Fc is 6.76 ng/ml.
|
| 纯度 |
> 95 % as determined by reducing SDS-PAGE.
|
| 内毒素 |
< 1.0 EU per μg of the protein as determined by the LAL method.
|
| 保存条件 |
Store at < -20°C, stable for 6 months. Please minimize freeze-thaw cycles.
|
| 运输条件 |
This product is provided as liquid. It is shipped at frozen temperature with blue ice/gel packs. Upon receipt, store it immediately at < - 20°C.
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| 制剂 |
Supplied as a 0.2 μm filtered solution of 20mM NaH2PO4, 150mM NaCl, 0.1M Arginine, 0.1M Glu, 10% Glycerol, 0.01% Tween20, 5% Trehalose, pH 7.4.
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| 复溶方法 |
Not Applicable
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| 背景 |
Human Lymphocyte activation gene 3 protein( LAG3) is a member of immunoglobulin (Ig) superfamily. LAG3 contains 4 extracellular Ig-like domains. The LAG3 gene contains 8 exons. LAG3 is involved in lymphocyte activation and can bind to HLA class-II antigens. It is selectively expressed in activated T and NK cells. LAG3 has a negative regulatory function in T cells and acts as as a new marker of T cell induced B cell activation. As a soluble molecule; LAG3 activates antigen-presenting cells through MHC class II signaling. It can lead to increased antigen-specific T-cell responses in vivo. LAG-3 has higher affinity to MHC class II than CD4.
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Q1:蛋白Buffer里是否含有denaturants（变性剂）？
我们在售重组蛋白一般不含变性剂，具体见说明书的formulation信息。常见变性剂有：尿素和盐酸胍。
Q2:重组蛋白有活性吗？可以做活性检测吗？
活性说明的见说明书bio-activity部分；如果说明书显示没有生物活性或则显示生物活性检测中，则说明这个蛋白没有生物活性数据，需要客户自己检测。
Q3:蛋白的运输条件是什么？
我们的蛋白有液体和冻干粉2种形式，一般来说冻干粉可以用冰袋、蓝冰、干冰运输；液体可以用蓝冰或干冰运输。
Q4:蛋白是通过什么方式纯化的？
一般通过纯化标签进行亲和纯化，常规有镍柱/His Tag、protein AG/Fc tag、标签抗体凝胶等。
Q5:无标签蛋白纯化方式？
蛋白的纯化方式一般通过标签进行亲和纯化，无标签的蛋白是在纯化后进行了标签切除。
Q6:蛋白发货形式可以是冻干粉吗？可以发液体吗？
默认按照说明书标注的形式发货；如果有特殊需求，需要根据蛋白情况确定。原则上，冻干粉蛋白可以发液体形式，液体蛋白不能发冻干粉形式。
Q7:蛋白可以用于细胞培养/注射小鼠吗？
内毒素含量小于0.1 ng/μg (1 EU/μg)的蛋白都可以用于细胞培养/注射小鼠。
实验操作视频
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