Human Siglec-9 Protein
Catalog No: SIGLEC9-HF001
- Species
- Human
- Expression System
- HEK293
- Tag
- an hFc (IgG1)
Product overview
Recombinant Human Siglec-9 Protein is expressed in HEK293 cells with an hFc (IgG1) tag at the C-terminus. It contains amino acid residues Gln18-Gly348 (UniProt accession: Q9Y336-1).
Product Details
- Molecular Aliases
- CD329; CDw329; FOAP-9; OBBP-Like; Siglec-9; SIGLEC9;FOAP9
- Protein Length
- Gln18-Gly348
- Expression System
- HEK293
- Theoretical Molecular Weight
- The protein has a predicted MW of 62.8 kDa. Due to glycosylation, the protein migrates to 80-110 kDa based on Bis-Tris PAGE result.
- Purity
- > 95% as determined by Bis-Tris PAGE > 95% as determined by HPLC
- Endotoxin
- Less than 1 EU per μg by the LAL method.
- Buffer / Formulation
- Lyophilized from 0.22μm filtered solution in PBS (pH 7.4). Normally 8% trehalose is added as protectant before lyophilization.
- State
- Lyophilized
- Storage Conditions
- -20 to -80°C for 12 months as supplied from date of receipt. -80°C for 3 months after reconstitution. Recommend to aliquot the protein into smaller quantities for optimal storage. Please minimize freeze-thaw cycles.
- Reconstitution Advice
- Dissolve the lyophilized protein in distilled water. Please refer to the Certificate of Analysis for detailed instructions.
Data Display
Human Siglec-9 on Bis-Tris PAGE under reduced condition. The purity is greater than 95%.
The purity of Human Siglec-9 is greater than 95% as determined by SEC-HPLC.
Background
Siglec-9 is a sialic-acid-binding lectin expressed predominantly on myeloid cells. Aberrant glycosylation occurs in essentially all types of cancers and results in increased sialylation. Thus, when the mucin MUC1 is expressed on cancer cells, it is decorated by multiple short, sialylated O-linked glycans (MUC1-ST).
References
- Beatson R, Tajadura-Ortega V, Achkova D, Picco G, Tsourouktsoglou TD, Klausing S, Hillier M, Maher J, Noll T, Crocker PR, Taylor-Papadimitriou J, Burchell JM. The mucin MUC1 modulates the tumor immunological microenvironment through engagement of the lectin Siglec-9. Nat Immunol. 2016 Nov;17(11):1273-1281. doi: 10.1038/ni.3552. Epub 2016 Sep
- PMID: 27595232; PMCID: PMC5257269. Note: HPLC results always come from liquid protein, due to absorption peak interference of trehalose in lyophilized powder.
Have questions about this product?
Our technical team can help with product selection, application questions and order support.