Cusabio Active Proteins
Recombinant Human Myeloid cell surface antigen CD33 (CD33), partial (Active) | CSB-MP004925HU
- 3 to 7 Working Days
Recombinant Human Myeloid cell surface antigen CD33 (CD33) ,partial (Active) | CSB-MP004925HU | Cusabio
Protein Description: Partial
Alternative Name (s) : Sialic acid-binding Ig-like lectin 3 (Siglec-3) (gp67) (CD33) (SIGLEC3)
Gene Names: CD33
Research Areas: Cancer
Species: Homo sapiens (Human)
Source: Mammalian cell
Tag Info: C-terminal hFc-Myc-tagged
Expression Region: 18-259aa
Sequence Info: DPNFWLQVQESVTVQEGLCVLVPCTFFHPIPYYDKNSPVHGYWFREGAIISRDSPVATNKLDQEVQEETQGRFRLLGDPSRNNCSLSIVDARRRDNGSYFFRMERGSTKYSYKSPQLSVHVTDLTHRPKILIPGTLEPGHSKNLTCSVSWACEQGTPPIFSWLSAAPTSLGPRTTHSSVLIITPRPQDHGTNLTCQVKFAGAGVTTERTIQLNVTYVPQNPTTGIFPGDGSGKQETRAGVVH
Biological Activity: Measured by its binding ability in a functional ELISA. Immobilized CD33 at 2 μg/ml can bind Anti-CD33 rabbit monoclonal antibody, the EC50 of human CD33 protein is 4.289- 5.312 ng/ml.
MW: 56.9 kDa
Purity: Greater than 95% as determined by SDS-PAGE.
Endotoxin: Less than 1.0 EU/ug as determined by LAL method.
Relevance: Sialic-acid-binding immunoglobulin-like lectin 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 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 .
Notes: Repeated freezing and thawing is not recommended. Store working aliquots at 4℃ for up to one week.
Involvement in disease:
Form: Lyophilized powder
Buffer: Lyophilized from a 0.2 μm filtered PBS, 6% Trehalose, pH 7.4
Reconstitution: We recommend that this vial be briefly centrifuged prior to opening to bring the contents to the bottom. Please reconstitute protein in deionized sterile water to a concentration of 0.1-1.0 mg/mL.We recommend to add 5-50% of glycerol (final concentration) and aliquot for long-term storage at -20℃/-80℃. Our default final concentration of glycerol is 50%. Customers could use it as reference.
Uniprot ID: P20138
Uniprot Entry Name:
HGNC Database Link: N/A
UniGene Database Link: N/A
KEGG Database Link: N/A
STRING Database Link: N/A
OMIM Database Link: N/A