- SynonymADAM8,MS2,CD156a
- SourceHuman ADAM8, His Tag (AD8-H5223) is expressed from human 293 cells (HEK293). It contains AA Ile 17 - Pro 497 (Accession # AAI15405.1).Predicted N-terminus: Ile 17Request for sequence
- Molecular Characterization

Human ADAM8, His Tag fused with a polyhistidine tag at the C-terminus, has a calculated MW of 53.8 kDa, which migrates as a 180-220 kDa band in DTT-reduced SDS-PAGE due to glycosylation. Two main fragments bands are visible with apparent MW of 69-73 kDa and 46-48 kDa respectively in reduced SDS-PAGE as a result of its being prone to proteolytic cleavage.
- EndotoxinLess than 1.0 EU per μg by the LAL method.
- Purity
>90% as determined by SDS-PAGE.
- Formulation
Lyophilized from 0.22 μm filtered solution in 50 mM Tris, 150 mM NaCl, pH7.5. 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 ADAM8, 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 90%.
- BackgroundDisintegrin and metalloproteinase domain-containing protein 8 is also known as ADAM8, Cell surface antigen MS2 and CD antigen CD156a, which belongs to the ADAM (a disintegrin and metalloprotease domain) family. ADAM family play a fundamental role in diverse processes such as asthma, development, angiogenesis and cancer through their activities in cell adhesion/fusion, membrane protein shedding, and signal transduction. ADAM8 / CD156a contains 1 disintegrin domain, 1 EGF-like domain and 1 peptidase M12B domain. ADAM8 / MS2 / CD156a is expressed on neutrophils and monocytes. ADAM8 / MS2 possible involvement in extravasation of leukocytes.
- References
Please contact us via TechSupport@acrobiosystems.com if you have any question on this product.
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所以一个细菌或病毒可以有很多的抗原。
若已进入细胞内。则先由巨噬细胞吞噬降解。并形成抗原-MHC复合体传送到表面。被辅助性T淋巴细胞识别和效应T淋巴细胞识别后。效应T淋巴细胞被激活。分解靶细胞。然后再由效应B细胞分泌的抗体进一步消灭病毒。
还有不清楚的么?
荚膜(capsule)是某些细菌在生长繁殖过程中分泌的一层黏液性物质,包围在细胞壁外,通常这种黏液层厚度小于0.2μm,成分是多糖或多肽,只有在营养丰富时或在动物体内,细菌才产生这种半抗原性质的黏液性物质。它具有保护菌体免受巨噬细胞等的捕捉和吞噬,因而具有抗吞噬抗消化、侵袭力强、与致病性关系密切等特点。像肺炎球菌、炭疽杆菌等都有这类荚膜。有些细菌的荚膜层较薄,小于0.2μm,称为微荚。
像链球菌的M蛋白、伤寒杆菌的Vi抗原、大肠杆菌的K抗原等都属于这类微荚膜。
请赐教!

