Human CD80 Protein, His Tag_天津卡梅德科技发展有限公司

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Human CD80 Protein, His Tag

Human CD80 Protein, His Tag

产品编号

KMP2338

别名

T淋巴细胞活化抗原CD80, T-lymphocyte activation antigen CD80, Activation B7-1 antigen

规格

50ug
100ug
200ug

DATASHEET MSDS

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产品介绍

Catalog Number	KMP2338
Alias	T淋巴细胞活化抗原CD80, T-lymphocyte activation antigen CD80, Activation B7-1 antigen
Size	50ug, 100ug, 200ug
Product Description	The Human CD80 Protein(KMP2338) is produced in HEK293 Cells and the target gene encoding Val35-Asn242 is expressed with a 6His tag at the C-terminus.
Molecular Name	CD80
Product Introduction	CD80（B7-1）：免疫球蛋白超家族跨膜蛋白，作为CD28/CTLA-4的配体，在抗原呈递细胞表面表达。
Molecular Weight	24.69 kDa
Expression System	HEK293 Cells
Species	Human
Purity	>95%
SDS-PAGE
Purification	Affinity Purification
Uniprot ID	P33681
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	Cluster of Differentiation 80, also called B7-1, is a member of cell surface immunoglobulin superfamily which plays key, yet distinct roles in the activation of T cells. It is the ligand for two different proteins on the T cell surface: CD28 and CTLA-4. Studies have shown that CTLA-4 binds mostly to CD80. The structure presents two extracellular domains: a membrane distal variable-like domain(IgV) and a membrane proximal Ig constant-like domain(IgC) along with an intracellular domain. Both IgV and IgC consist of anti-parallel beta sandwiches joined by a short linker region. CD80 is mostly expressed on the surface of antigen-presenting cells including activated B cells, macrophages and dendritic cells.
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

如何避免重组蛋白降解？

可在纯化过程中加入蛋白酶抑制剂、低温操作，优化储存条件（如分装冻存于-80°C），并避免反复冻融。某些情况下，可选用蛋白酶缺陷型宿主菌减少降解风险。
如何检测重组蛋白的表达和纯度？

常用SDS-PAGE、Western Blot检测表达，BCA/Bradford法测浓度，HPLC或质谱分析纯度，生物活性实验（如ELISA、酶活检测）验证功能。

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