| CD200 | 
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| Identifiers | 
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| Aliases | CD200, CD200 molecule, MOX1, MOX2, MRC, OX-2, CD-200 | 
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| External IDs | OMIM: 155970; MGI: 1196990; HomoloGene: 4344; GeneCards: CD200; OMA:CD200 - orthologs | 
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| | Gene location (Mouse) | 
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 |  |  | Chr. | Chromosome 16 (mouse) | 
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 |  |  | Band | 16 B5|16 29.53 cM | Start | 45,202,498 bp | 
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 | End | 45,229,416 bp | 
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| | RNA expression pattern | 
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 | Bgee | | Human | Mouse (ortholog) | 
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 | | Top expressed in |  | frontal pole
 ganglionic eminence
 Brodmann area 10
 middle frontal gyrus
 Hypothalamus
 orbitofrontal cortex
 Brodmann area 9
 parietal pleura
 Brodmann area 46
 Brodmann area 23
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 | | Top expressed in |  | ascending aorta
 tunica media of zone of aorta
 ventral tegmental area
 dorsomedial hypothalamic nucleus
 ventromedial nucleus
 paraventricular nucleus of hypothalamus
 suprachiasmatic nucleus
 body of femur
 arcuate nucleus
 aortic valve
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 |  | More reference expression data | 
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 | BioGPS |  | 
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| Wikidata | 
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OX-2 membrane glycoprotein, also named CD200 (Cluster of Differentiation 200)  is a human protein encoded by the CD200 gene. In humans, the CD200 gene is located on chromosome 3 in proximity to genes encoding the other B7 proteins CD80/CD86. In mice, the CD200 gene is located on chromosome 16.
The protein encoded by this gene is a type-1 membrane glycoprotein, which contains two IgSF immunoglobulin domains, transmembrane region and a 19 amino acid long cytoplasmatic domain. CD 200 belongs to the immunoglobulin superfamily, particularly belongs to the B7 receptor family.