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Description
CD200 His Tag Protein, HumanProduct Specification Species Human Antigen CD200 Synonyms MOX1, MOX2, MRC, OX 2, My033 Accession P41217 Amino Acid Sequence Gln31 Gly232, with C terminal 8*His QVQVVTQDEREQLYTPASLKCSLQNAQEALIVTWQKKKAVSPENMVTFSENHGVVIQPAYKDKINITQLGLQNSTITFWNITLEDEGCYMCLFNTFGFGKISGTACLTVYVQPIVSLHYKFSEDHLNITCSATARPAPMVFWKVPRSGIENSTVTLSHPNGTTSVTSILHIKDPKNQVGKEVICQVLHLGTVTDFKQTVNKGGGGSHHHHHHHH Expression System HEK293 Molecular Weight 35 45kDa Purity 95% by SDS PAGE
Product Specification
| Species | Human |
| Antigen | CD200 |
| Synonyms | MOX1, MOX2, MRC, OX-2, My033 |
| Accession | P41217 |
| Amino Acid Sequence | Gln31-Gly232, with C-terminal 8*His QVQVVTQDEREQLYTPASLKCSLQNAQEALIVTWQKKKAVSPENMVTFSENHGVVIQPAYKDKINITQLGLQNSTITFWNITLEDEGCYMCLFNTFGFGKISGTACLTVYVQPIVSLHYKFSEDHLNITCSATARPAPMVFWKVPRSGIENSTVTLSHPNGTTSVTSILHIKDPKNQVGKEVICQVLHLGTVTDFKQTVNKGGGGSHHHHHHHH |
| Expression System | HEK293 |
| Molecular Weight | 35-45kDa |
| Purity | ＞95% by SDS-PAGE |
| Endotoxin | <0.1EU/μg |
| Conjugation | Unconjugated |
| Tag | His Tag |
| Physical Appearance | Lyophilized Powder |
| Storage Buffer | PBS, pH7.4 |
| Reconstitution | Reconstitute at 0.1-1 mg/ml according to the size in ultrapure water after rapid centrifugation. |
| Stability & Storage | · 12 months from date of receipt, lyophilized powder stored at -20 to -80℃. · 3 months, -20 to -80℃ under sterile conditions after reconstitution. · 1 week, 2 to 8℃ under sterile conditions after reconstitution. · Please avoid repeated freeze-thaw cycles. |
| Reference | 1． Barclay A.N., Wright G.J., Brooke G., Brown M.H. CD200 and membrane protein interactions in the control of myeloid cells. Trends Immunol. 2002; 23:285-290. |
Background
CD200 is a type-1 cell membrane glycoprotein of the immunoglobulin supergene family, present on both cells with myeloid/lymphoid origin as well as on epithelial cells and many cancer cells. CD200, also known as MRC OX-2, is a highly conserved, 48 kDa type 1a transmembrane glycoprotein related structurally to the B7 family of costimulatory receptors. The molecule itself consists of an IgSF extracellular domain (single V + C), a single transmembrane region and a short cytoplasmic tail lacking signaling motifs. The molecule is expressed by resting dendritic cells, thymocytes, endothelial cells, neurons and osteoblast precursors (OBp), as well as by activated B and T cells (including αβTCR+ and most γδTCR+ cells). CD200 interacts with a structurally related receptor (CD200R) expressed mainly on myeloid cells and is involved in regulation of macrophage and mast cell function. OX-2 / CD200 and CD200R associate via their respective N-terminal Ig-like domains. CD200 also plays an important role in prevention of graft rejection, autoimmune diseases and spontaneous abortion.
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