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Questions? Please consult our answers to frequently asked questions at http://www.ebioscience.com/faq. DescriptionThe eBioH4B4 monoclonal antibody reacts with human CD107b, also known as LAMP-2 (lysosomal-associated membrane protein 2). CD107b, an approximately 105 kDa type I transmembrane protein, is highly glycosylated, and along with LAMP-1 (CD107a) is estimated to contribute to approximately 50% of all proteins of the lysosomal membrane. CD107b is expressed intracellularly on many cell types, and on the surface of activated platelets and T cells, as well as some cancer cells. Genetic deficiency of both CD107a and CD107b results in embryonic lethality. Loss of either CD107a or CD107b alone is not embryonic lethal, however the loss of CD107b causes a more severe phenotype. In humans, mutations in CD107b results in a lysosomal glycogen storage disorder, known as Danon disease. Applications ReportedFor research use only, not for diagnostic or therapeutic use. This eBioH4B4 (H4B4) antibody has been reported for use in intracellular staining followed by flow cytometric analysis. Applications TestedThis eBioH4B4 (H4B4) antibody has been pre-titrated and tested by intracellular staining and flow cytometric analysis of Jurkat cells. This can be used at 20 μl (0.25 μg) per 100 μl blood (or per 1 million cells in 100 μl total staining volume). References
Nishino I, Fu J, Tanji K, Yamada T, Shimojo S, Koori T, Mora M, Riggs JE, Oh SJ, Koga Y, Sue CM, Yamamoto A, Murakami N, Shanske S, Byrne E, Bonilla E, Nonaka I, DiMauro S, Hirano M. Primary LAMP-2 deficiency causes X-linked vacuolar cardiomyopathy and myopathy (Danon disease). Nature. 2000;406:906-910. (H4B4, FC, IHC, PubMed) Kannan K, Stewart RM, Bounds W, Carlsson SR, Fukuda M, Betzing KW, Holcombe RF. Lysosome-associated membrane proteins h-LAMP1 (CD107a) and h-LAMP2 (CD107b) are activation-dependent cell surface glycoproteins in human peripheral blood mononuclear cells which mediate cell adhesion to vascular endothelium. Cell Immunol. 1996;171(1):10-19. (H4B4, FC, IHC, PubMed) Chen JW, Murphy TL, Willingham MC, Pastan I, August JT. Identification of two lysosomal membrane glycoproteins. J Cell Biol. 1985 Jul;101(1):85-95. Carlsson SR, Roth J, Piller F, Fukuda M. Isolation and characterization of human lysosomal membrane glycoproteins, h-lamp-1 and h-lamp-2. Major sialoglycoproteins carrying polylactosaminoglycan. J Biol Chem. 1988 Dec 15;263(35):18911-9. Grutzkau A, Smorodchenko A, Lippert U, Kirchhof L, Artuc M, Henz BM. LAMP-1 and LAMP-2, but not LAMP-3, are reliable markers for activation-induced secretion of human mast cells. Cytometry A. 2004 Sep;61(1):62-8. Eskelinen EL, Illert AL, Tanaka Y, Schwarzmann G, Blanz J, Von Figura K, Saftig P. Role of LAMP-2 in lysosome biogenesis and autophagy. Mol Biol Cell. 2002 Sep;13(9):3355-68. Related ProductsCat. 11-1072 Fluorescein isothiocyanate (FITC) anti-mouse CD107b (LAMP-2) (clone eBioABL-93 (ABL-93)) Cat. 11-4714 Fluorescein isothiocyanate (FITC) Mouse IgG1, K Isotype Control |
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