Human CD152 Protein, GST Tag_天津卡梅德科技发展有限公司

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Human CD152 Protein, GST Tag

Human CD152 Protein, GST Tag

产品编号

KMP2326

别名

细胞毒T淋巴细胞相关抗原, Cytotoxic T-lymphocyte protein 4, CD152

规格

50ug
100ug
200ug

DATASHEET MSDS

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产品介绍

Catalog Number	KMP2326
Alias	细胞毒T淋巴细胞相关抗原, Cytotoxic T-lymphocyte protein 4, CD152
Size	50ug, 100ug, 200ug
Product Description	The Human CD152 Protein(KMP2326) is produced in HEK293 Cells and the target gene encoding Lys36-Asp161 is expressed with a GST tag at the C-terminus.
Molecular Name	CD152
Product Introduction	CD152（CTLA-4）：免疫调节受体，以跨膜形式表达于T细胞，参与免疫应答的负向调控。
Molecular Weight	40.48 kDa
Expression System	HEK293 Cells
Species	Human
Purity	>95%
SDS-PAGE
Purification	Affinity Purification
Uniprot ID	Q6GTX8
Storage Condition	Aliquot and store at -20℃ to -80℃. Avoid repeated freezing and thawing cycles.
Formulation	PBS, pH7.4
Shipping Condition	In general, the proteins are provided as lyophilized powder which are shipped at ambient temperature. They are shipped out in dry ice if supplied in liquid form.
Background	Cytotoxic Tlymphocyte 4(CTLA-4,CD152), is a type I transmembrane T cell inhibitory molecule that is a member of the Ig superfamily. Human or mouse CTLA4 cDNA encodes 223 amino acids(aa) including a 35 aa signal sequence, a 126 aa extracellular domain(ECD) with one Ig-like V-type domain, a 21 aa transmembrane(TM) sequence, and a 41 aa cytoplasmic sequence.It is widely expressed with highest levels in lymphoid tissues. CD28 and CTLA-4, together with their ligands, B7-1 and B7-2, constitute one of the dominant costimulatory pathways that regulate T and B cell responses. CD28 and CTLA-4 are structurally homologous molecules that are members of the immunoglobulin(Ig) gene superfamily. CTLA4 transmits an inhibitory signal to T cells, whereas CD28 transmits a stimulatory signal. Intracellular CTLA4 is also found in regulatory T Cells and may play an important role in their functions. Tcell activation through the Tcell receptor and CD28 leads to increased expression of CTLA4.
Endotoxin	<1.0 EU/ug determined by the LAL method
Product Declaration	该产品仅供科研使用，不可直接用于人体或注射。

FAQ

如何提高重组蛋白的可溶性表达？

可优化表达条件（如降低诱导温度、调整IPTG浓度）、使用促溶标签（如SUMO、GST）、共表达分子伴侣，或尝试不同宿主系统（如哺乳动物细胞或昆虫细胞）以提高可溶性蛋白产量。
重组蛋白纯化常用的方法有哪些？

常用的纯化方法包括亲和层析（如His-Tag、GST-Tag）、离子交换层析、疏水相互作用层析（HIC）和凝胶过滤层析。具体方法取决于蛋白特性和标签类型。

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