Human CD274 Protein, Flag Tag_天津卡梅德科技发展有限公司

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Human CD274 Protein, Flag Tag

Human CD274 Protein, Flag Tag

产品编号

KMP2355

别名

程序性死亡蛋白配体-1, programmed cell death 1 ligand 1, CD274

规格

50ug
100ug
200ug

DATASHEET MSDS

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产品介绍

Catalog Number	KMP2355
Alias	程序性死亡蛋白配体-1, programmed cell death 1 ligand 1, CD274
Size	50ug, 100ug, 200ug
Product Description	The Human CD274 Protein(KMP2355) is produced in HEK293 Cells and the target gene encoding Phe19-Thr239 is expressed with a Flag tag at the C-terminus.
Molecular Name	CD274
Product Introduction	CD274（PD-L1）：免疫球蛋白超家族（IgSF）成员，通过跨膜形式参与免疫细胞功能调控。
Molecular Weight	26.29 kDa
Expression System	HEK293 Cells
Species	Human
Purity	>95%
SDS-PAGE
Purification	Affinity Purification
Uniprot ID	Q15116
Storage Condition	Aliquot and store at -20℃ to -80℃. Avoid repeated freezing and thawing cycles.
Formulation	20mM PB, 150mM NaCl, 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	CD274, also known as B7-H1 or programmed death ligand 1(PD-L1), is a 40 kD type I transmembrane protein and a member of the B7 family within the immunoglobulin receptor superfamily. Programmed death-1 ligand-1(PD-L1, CD274, B7-H1) has been identified as the ligand for the immunoinhibitory receptor programmed death-1(PD1/PDCD1) and has been demonstrated to play a role in the regulation of immune responses and peripheral tolerance. By binding to PD1 on activated T-cells and B-cells, PD-L1 may inhibit ongoing T-cell responses by inducing apoptosis and arresting cell-cycle progression. Accordingly, it leads to growth of immunogenic tumor growth by increasing apoptosis of antigen specific T cells and may contribute to immune evasion by cancers. PD-L1 thus is regarded as promising therapeutic target for human autoimmune disease and malignant cancers.
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

蛋白溶解后浓度偏低，如何调整？

低速离心：12,000 rpm, 5分钟，去除不溶物。缓冲液置换：使用超滤离心管（如10 kDa截留分子量）浓缩。
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。

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