Catalogue number: | PA1018 |
Price: | $200.00 |
Reactivities: | Human |
Applications: | Immunohistochemistry, Western Blot |
Size: | 100ug/vial |
Gene: | CD22 |
Swiss prot: | P20273 |
Form: | Lyophilized |
Format: | Each vial contains 5mg BSA, 0.9mg NaCl, 0.2mg Na2HPO4, 0.05mg Thimerosal, 0.05mg NaN3. |
Storage temp: | "At -20 degree C for one year. After reconstitution, at 4 degree C for one month. It can also be aliquotted and stored frozen at -20 degree C for a longer time. Avoid repeated freezing and thawing. " |
Scientific background: | CD22 is a surface glycoprotein of B lymphocytes that is rapidly phosphorylated on cytoplasmic tyrosines after antigen receptor cross-linking. CD22 is a negative regulator of antigen receptor signaling whose onset of expression at the mature B cell stage may serve to raise the antigen concentration threshold required for B cell triggering. The human CD22 gene is expressed specifically in B lymphocytes and likely has an important function in cell-cell interactions. The B cell coreceptor CD22 plays an important role in regulating signal transduction via the B cell Ag receptor.3 CD22 is located within the band region q13.1 of chromosome 19. |
References: | 1. O'Keefe, T. L.; Williams, G. T.; Davies, S. L.; Neuberger, M. S. Hyperresponsive B cells in CD22-deficient mice. Science 274: 798-801, 1996. 2. Wilson, G. L.; Najfeld, V.; Kozlow, E.; Menniger, J.; Ward, D.; Kehrl, J. H. Genomic structure and chromosomal mapping of the human CD22 gene. J. Immun. 150: 5013-5024, 1993. 3. John, B.; Herrin, B. R.; Raman, C.; Wang, Y.; Bobbitt, K. R.; Brody, B. A.; Justement, L. B. The B cell coreceptor CD22 associates with AP50, a clathrin-coated pit adapter protein, via tyrosine-dependent interaction. J. Immun. 170: 3534-3543, 2003. |
Additional info: | A synthetic peptide corresponding to a sequence at the C-terminal of human CD22, different from the related mouse sequence by three amino acids. |