Recombinant Human PSG9/PSBG9 Protein (His Tag)
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- 表达系统： HEK293 Cells
- 蛋白编码： AAH20759.1
| 别称 |
Pregnancy-specific beta-1-glycoprotein 9;PS-beta-G-9;PSBG-9;Pregnancy-specific glycoprotein 9;PS34;Pregnancy-specific beta-1 glycoprotein B;PS-beta-B;Pregnancy-specific beta-1-glycoprotein 11;PS-beta-G-11;PSBG-11;Pregnancy-specific glycoprotein 11;Pregnancy-specific glycoprotein 7;PSG7;PSG11
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| 表达系统 |
HEK293 Cells
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| 序列 |
Glu35-Ser426
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| 蛋白编码 |
AAH20759.1
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| 种属 |
Human
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| 计算分子量 |
45.6 kDa
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| 表观分子量 |
65 kDa
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| 标签 |
C-His
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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.
|
| 保存条件 |
Store at < -20°C, stable for 6 months. Please minimize freeze-thaw cycles.
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| 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 PB, 150mM NaCl, pH 7.2.
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| 复溶方法 |
Not Applicable
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| 背景 |
Pregnancy-specific beta-1-glycoprotein 9(PSG9) is a secreted protein and contains 3 Ig-like C2-type (immunoglobulin-like) domains, 1 Ig-like V-type (immunoglobulin-like) domain. It is a member of the PSG family, a group of closely related secreted glycoproteins that are highly expressed in fetal placental syncytiotrophoblast cells. The members of the PSG protein family all have a characteristic N-terminal domain that is homologous to the immunoglobulin variable region. PSGs become detectable in serum during the first two to three weeks of pregnancy and increase as the pregnancy progresses, eventually representing the most abundant fetal protein in the maternal blood at term. PSGs function to stimulate secretion of TH2-type cytokines from monocytes, and they may also modulate the maternal immune system during pregnancy, thereby protecting the semi-allotypic fetus from rejection. PSGs are commonly expressed in trophoblast tumors. Eleven human PSG proteins (PSG1-PSG11) have been described.
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Q1: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。
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: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。
Q4: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。
Q5: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。
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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