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Recombinant Human SIGLEC3/CD33 Protein (Fc & His Tag)
SKU: PKSH033054-50
Recombinant Human SIGLEC3/CD33 Protein (Fc & His Tag)
| SKU # | PKSH033054 |
| Expression Host | HEK293 Cells |
Description
| Synonyms | CD33, Myeloid Cell Surface Antigen CD33, SIGLEC3, Sialic Acid-Binding Ig-Like Lectin 3, Siglec-3, gp67 |
| Species | Human |
| Expression Host | HEK293 Cells |
| Sequence | Asp18-His259 |
| Accession | AAH28152.1 |
| Calculated Molecular Weight | 55.0 kDa |
| Observed Molecular Weight | 80 kDa |
| Tag | C-Fc-His |
| Bio-activity | Not validated for activity |
Properties
| Purity | > 95 % as determined by reducing SDS-PAGE. |
| Endotoxin | < 1.0 EU per μg of the protein as determined by the LAL method. |
| Storage | Generally, lyophilized proteins are stable for up to 12 months when stored at -20 to -80℃. Reconstituted protein solution can be stored at 4-8℃ for 2-7 days. Aliquots of reconstituted samples are stable at < -20℃ for 3 months. |
| Shipping | This product is provided as lyophilized powder which is shipped with ice packs. |
| Formulation | Lyophilized from a 0.2 μm filtered solution of 20mM PB, 150mM NaCl, 2mM EDTA, pH 7.2. Normally 5% - 8% trehalose, mannitol and 0.01% Tween 80 are added as protectants before lyophilization. Please refer to the specific buffer information in the printed manual. |
| Reconstitution | Please refer to the printed manual for detailed information. |
Background
CD33 is a type I Lectin belonging to the Ig superfamily. CD33 contains an N terminal Ig like V type domain, which mediates sialic acid binding, followed by one Ig like C2 type domain, a transmembrane region and a cytoplasmic tail containing two conserved immunoreceptor tyrosine based inhibition motifs (ITIMs). Eleven human Siglecs have been characterized. Siglecs 5 to 11 share a high degree of sequence similarity with CD33/Siglec3 both in their extracellular and intracellular regions. They are collectively referred to as CD33 related Siglecs. CD33 related Siglecs have differential expression pattern within the hematopoietic system. They are involved in the regulation of cellular activation within the immune system. Siglec 3 expression is restricted to cells of myelomonocytic lineage. Siglec3 recruits SHP1 and SHP2 to its ITIMs upon phosphorylation.