CD33 Human Recombinant Protein

CAT#: TP723960

Human CD33 Protein, hFc-His Tag

Product Images

Figure 1. Human CD33, hFc-His Tag on SDS-PAGE under reducing condition.

Specifications

Product Data

• Species: Human
• Expression Host: HEK293
• Expression cDNA Clone or AA Sequence:
  Protein Sequence

  CD33（Asp18-His259）+hFc（Glu99-Ala330）+6×His tag
• Tag: C-Human Fc and 6×His
• Predicted MW: 53.8 kDa
• Purity: > 95%
• Buffer: Lyophilized from sterile PBS, pH 7.4. Normally 5% - 8% trehalose is added as protectants before lyophilization
• Reconstitution: Reconstitute with deionized water
• Preparation: Affinity purification
• Storage: Store the lyophilized protein at -20°C.
  After reconstitution, store the protein at -80°C for 12 months.
  Avoid repeated freezing and thawing.
• Stability: 12 months from date of despatch

Reference Data

• Locus ID: 945
• UniProt ID: P20138
• Summary: 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.