Recombinant Mouse Siglec-E (C-Fc)
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- 表达系统： HEK293 Cells
- 蛋白编码： Q6PJ50
| 别称 |
SiglecE;Siglec-E;Sialic Acid Binding Ig-like Lectin E
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| 表达系统 |
HEK293 Cells
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| 序列 |
Gln20-Phe355
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| 蛋白编码 |
Q6PJ50
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| 种属 |
Mouse
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| 计算分子量 |
64.4 kDa
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| 表观分子量 |
85-95 kDa
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| 标签 |
C-Fc
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| 纯度 |
> 95 % as determined by reducing SDS-PAGE.
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| 内毒素 |
< 1.0 EU per μg of the protein as determined by the LAL method.
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| 保存条件 |
Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months.
|
| 运输条件 |
This product is provided as lyophilized powder which is shipped with ice packs.
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| 制剂 |
Lyophilized from a 0.2 μm filtered solution of 20mM Tris-HCl, 150mM NaCl, pH 8.5.
Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| 复溶方法 |
Please refer to the printed manual for detailed information.
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| 背景 |
Siglecs are sialic acid specific I?type lectins that are characterized by an extracellular domain (ECD) with an N?terminal Ig?like V?set domain followed by varying numbers of Ig?like C2?set domains. Mouse Siglec?E, also known as Myeloid Inhibitory Siglec (MIS), is an 80 ? 85 kDa member of the CD33?related subfamily of Siglecs. Rodent and primate Siglec gene families have significantly diverged, and Siglec?9 is the most likely human ortholog of mouse Siglec?E. Siglec?E is expressed as a heavily N?glycosylated disulfide?linked homodimer and shows binding preference for disialic acids in the alpha 2?8 linkage. Siglec?E is up?regulated and additionally phosphorylated following cellular stimulation by a variety of TLR agonists. Siglec?E signaling negatively regulates the LPS?induced production of TNF? alpha and IL?6 by macrophages. Its up?regulation in macrophages parallels the development of endotoxin tolerance. Siglec?E recognition of sialylated determinants on virulent T. cruzi contributes to the suppression of dendritic cell IL?12 p40 production.
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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: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。
Q3: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。
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: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。
Q6: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。
Q7: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。
实验操作视频
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