- SynonymCD48,BCM1,SLAMF2,BLAST,BLAST1,MEM-102,TCT.1,BCM-1,SLAMF-2,BLAST-1
- SourceHuman CD48, His Tag (BC1-H5226) is expressed from human 293 cells (HEK293). It contains AA Gln 27- Ser 220 (Accession # AAH16182).Predicted N-terminus: Gln 27Request for sequence
- Molecular Characterization

This protein carries a polyhistidine tag at the C-terminus.
The protein has a calculated MW of 23.2 kDa. The protein migrates as 35-45 kDa under reducing (R) condition (SDS-PAGE) due to glycosylation.
- EndotoxinLess than 1.0 EU per μg by the LAL method.
- Purity
>95% as determined by SDS-PAGE.
- Formulation
Lyophilized from 0.22 μm filtered solution in PBS, pH7.4. Normally trehalose is added as protectant before lyophilization.
Contact us for customized product form or formulation.
- Reconstitution
Please see Certificate of Analysis for specific instructions.
For best performance, we strongly recommend you to follow the reconstitution protocol provided in the CoA.
- Storage
For long term storage, the product should be stored at lyophilized state at -20°C or lower.
Please avoid repeated freeze-thaw cycles.
This product is stable after storage at:
- -20°C to -70°C for 12 months in lyophilized state;
- -70°C for 3 months under sterile conditions after reconstitution.

Human CD48, His Tag on SDS-PAGE under reducing (R) condition. The gel was stained overnight with Coomassie Blue. The purity of the protein is greater than 95%.

Immobilized Human 2B4, Fc Tag (Cat. No. 2B4-H5255) at 5 μg/mL (100 μL/well) can bind Human CD48, His Tag (Cat. No. BC1-H5226) with a linear range of 0.156-2.5 μg/mL (QC tested).
- BackgroundCD48 antigen is also known as Signaling lymphocytic activation molecule 2, SLAM family member 2 (SLAMF2), Leukocyte antigen MEM-102, BCM1 surface antigen, B-lymphocyte activation marker BLAST-1. CD48 is a 65 kDa GPI-linked protein which belongs to the CD2 subfamily of immunoglobulin superfamily molecules. CD48 antigen contains two Ig-like C2-type (immunoglobulin-like) domains and two Ig-like V-type (immunoglobulin-like) domain. CD48 interacts with CD244 in an heterophilic manner. CD48 is ligand for CD2. CD48 might facilitate interaction between activated lymphocytes. CD48 is probably involved in regulating T-cell activation.
- References
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
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你可以根据抗原的特征去判断,
1、异物性 但也有例外:如癌细胞、损伤或衰老的细胞
2.大分子性 抗原多数是蛋白质,其结构较复杂,分子量较大
3.特异性 抗原决定簇(病毒的衣壳)
进入人体的弹片具有特异性,但不具有大分子性,因而不能称之为抗原;有些过敏源可以称之为抗原.
希望能帮到你,望采纳
由此,注射疫苗(没有破坏力但却能刺激机体产生对应的抗体)属于主动免疫,注射血清(即抗体)属于被动免疫,前者旨在预防,标本兼治,后者则能够应急。
体液免疫:生发中心母细胞的轻链和重链V基因可发生高频率的点突变,在抗原诱导的情况下产生.在初次免疫应答时,大量抗原的出现,可使表达不同亲和力的BCR的各种B细胞克隆被选择和激活,产生多种不同亲和力的抗体.每个B细胞开始时一般均表达IgM,在免疫应答时首先分泌IgM,通过重链C区的基因重排,随后会产生IgG,IgA,起主要的免疫应答作用.
细胞免疫:抗原被提呈给T细胞后,T细胞活化,产生大量的细胞因子,比如干扰素,白细胞介素等,参与细胞免疫过程.

