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OX-104 recognizes the human CD200 cell surface antigen, also known as OX2.CD200 is expressed by a subset of B lymphocytes, some endothelial cells and by neurons. Studies have suggested that the CD200-CD200 ligand system is of importance in the control of macrophage and granulocyte activation.
CD200 is a type-1 membrane glycoprotein in the immunoglobulin superfamily, featuring two immunoglobulin domains. It is widely expressed on various cells, including B and T cells, keratinocytes, nerve cells, follicular dendritic cells, ovarian cells, and trophoblasts. CD200 interacts with CD200R on myeloid cells, inhibiting macrophage activation, reducing IL-6 production, and attenuating lymphocyte activation. It also prevents mast cell degranulation and decreases TNF-alpha and IL-13 secretion, playing a role in immune regulation and maternal tolerance. Homologues of CD200 are found in herpesviruses and poxviruses, indicating a conserved immune modulation function. CD200 has multiple alternatively spliced transcript variants, contributing to its functional diversity. Diseases linked to CD200 dysfunction include Mantle Cell Lymphoma and Primary Hypertrophic Osteoarthropathy, highlighting its importance in health and disease.
For Research Use Only. Not for use in diagnostic procedures. Not for resale without express authorization.
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Protein Aliases: antigen identified by monoclonal antibody MRC OX-2; CD200; CD200 antigen; OX-2 membrane glycoprotein
Gene Aliases: CD200; MOX1; MOX2; MRC; My033; OX-2
UniProt ID: (Human) P41217
Entrez Gene ID: (Human) 4345
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