SRP6206

sCD22 human

recombinant, expressed in E. coli, ≥98% (SDS-PAGE)

• Synonym(s): B Lymphocyte cell adhesion molecule, BL-CAM, Leu-14, Siglec-2
• UNSPSC Code: 12352200
• NACRES: NA.32

Properties

• biological source: human
• recombinant: expressed in E. coli
• assay: ≥98% (SDS-PAGE)
• form: lyophilized powder
• mol wt: ~75 kDa
• packaging: pkg of 10 μg; pkg of 50 μg
• impurities: <1 EU/μg endotoxin (LAL test)
• UniProt accession no.: P20273
• shipped in: wet ice
• storage temp.: −20°C
• Gene Information: human ... CD22(933)

Description

General description

CD22 is a B-lineage restricted 135 kDa glycoprotein whose cell surface expression is limited to resting and activated B lymphocytes. The physiological role of CD22 is still unknown. Targeted disruption of CD22 in mice results in a reduced level of surface IgM on peripheral B cells suggesting a role for CD22 in limiting antigen receptor signaling. CD22 is a member of the Ig gene superfamily that uniquely binds a sialic acid-dependent ligand. Recombinant human CD22 is a soluble 75.0 kDa protein which corresponds to the extracellular domain of CD22.

Physical form

Sterile filtered through a 0.2 micron filter. Lyophilized from 1X PBS, pH 7.2.

Reconstitution

Centrifuge the vial prior to opening. Reconstitute in water to a concentration of 0.1-1.0 mg/mL. Do not vortex. This solution can be stored at 2-8°C for up to 1 week. For extended storage, it is recommended to further dilute in a buffer containing a carrier protein (example 0.1% BSA) and store in working aliquots at -20°C to -80°C.

Safety Information

• Storage Class: 13 - Non Combustible Solids
• wgk_germany: WGK 3
• flash_point_f: Not applicable
• flash_point_c: Not applicable