Anti-CD33 antibody (49-259) (STJ22989)
SPECIFICATIONS
ClonalityPolyclonal
HostRabbit
ConjugationUnconjugated
IsotypeIgG
General Information
| Short Description | Rabbit polyclonal SIGLEC3/CD33 (49-259) antibody for use in WB, IHC-P, IF, ICC and ELISA in human, mouse and rat samples. Datasheet included with dilution recommendations, and related reagents. |
| Applications | WB/IHC-P/IF/ICC/ELISA |
| Host | Rabbit |
| Reactivity | Human/Mouse/Rat |
| Note | STRICTLY FOR FURTHER SCIENTIFIC RESEARCH USE ONLY (RUO). MUST NOT TO BE USED IN DIAGNOSTIC OR THERAPEUTIC APPLICATIONS. |
Product Properties
| Clonality | Polyclonal |
| Isotype | IgG |
| Conjugation | Unconjugated |
| Concentration | Lot specific |
| Purification | Affinity purification |
| Dilution Range | WB:1:500-1:1000IHC-P:1:50-1:200IF/ICC:1:50-1:200ELISA:Recommended starting concentration is 1 Mu g/mL. Please optimize the concentration based on your specific assay requirements. |
| Formulation | PBS with 0.05% Proclin300, 50% Glycerol, pH7.3. |
| Storage Instruction | Store at-20ยฐC for up to 1 year from the date of receipt, and avoid repeat freeze-thaw cycles. |
Target Information
| Gene Symbol | CD33 |
| Gene ID | 945 |
| Uniprot ID | CD33_HUMAN |
| Immunogen Region | 49-259 |
| Immunogen Sequence | YYDKNSPVHGYWFREGAIIS RDSPVATNKLDQEVQEETQG RFRLLGDPSRNNCSLSIVDA RRRDNGSYFFRMERGSTKYS YKSPQLSVHVTDLTHRPKIL IPGTLEPGHSKNLTCSVSWA CEQGTPPIFSWLSAAPTSLG PRTTHSSVLIITPRPQDHGT NLTCQVKFAGAGVTTERTIQ LNVTYVPQNPTTGIFPGDGS GKQETRAGVVH |
| Specificity | Recombinant fusion protein containing a sequence corresponding to amino acids 49-259 of human SIGLEC3/CD33 (NP_001763.3). |
Additional Info
| Tissue Specificity | Monocytic/myeloid lineage cells. In the brain, CD33 is mainly expressed on microglial cells. |
| Post Translational Modifications | Glycosylated. Glycosylation at Asn-100 is critical for regulating ligand recognition. Phosphorylation of Tyr-340 is involved in binding to PTPN6 and PTPN11. Phosphorylation of Tyr-358 is involved in binding to PTPN6. LCK phosphorylates Tyr-340 efficiently and Tyr-358 to a lesser extent. |
| Function | Sialic-acid-binding immunoglobulin-like lectin (Siglec) that plays a role in mediating cell-cell interactions and in maintaining immune cells in a resting state. Preferentially recognizes and binds alpha-2,3- and more avidly alpha-2,6-linked sialic acid-bearing glycans. Upon engagement of ligands such as C1q or syalylated glycoproteins, two immunoreceptor tyrosine-based inhibitory motifs (ITIMs) located in CD33 cytoplasmic tail are phosphorylated by Src-like kinases such as LCK. These phosphorylations provide docking sites for the recruitment and activation of protein-tyrosine phosphatases PTPN6/SHP-1 and PTPN11/SHP-2. In turn, these phosphatases regulate downstream pathways through dephosphorylation of signaling molecules. One of the repressive effect of CD33 on monocyte activation requires phosphoinositide 3-kinase/PI3K. |
| Protein Name | Myeloid Cell Surface Antigen Cd33Sialic Acid-Binding Ig-Like Lectin 3Siglec-3Gp67Cd Antigen Cd33 |
| Database Links | Reactome: R-HSA-198933Reactome: R-HSA-6798695 |
| Cellular Localisation | Isoform Cd33m: Cell MembraneSingle-Pass Type I Membrane ProteinIsoform Cd33m: PeroxisomeCd33m Isoform Does Not Localize To Cell Surfaces But Instead Accumulates In Peroxisomes |
| Alternative Antibody Names | Anti-Myeloid Cell Surface Antigen Cd33 antibodyAnti-Sialic Acid-Binding Ig-Like Lectin 3 antibodyAnti-Siglec-3 antibodyAnti-Gp67 antibodyAnti-Cd Antigen Cd33 antibodyAnti-CD33 antibodyAnti-SIGLEC3 antibody |
Information sourced from Uniprot.org