Characterization of human leukocyte differentiation antigens

Characterization of human leukocyte differentiation antigens

Immunology Today, vol. 8, No. 4, 1987 -rostrum II1,1 . . . . . . . glucose starvation or heat shock many proteins fail to assemble or fold correctl...

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Immunology Today, vol. 8, No. 4, 1987

-rostrum

II1,1 . . . . . . .

glucose starvation or heat shock many proteins fail to assemble or fold correctly 3°. The speculation that BiP interacts with a hydrophobic portion of the protein or an unpaired sulfhydryl group which is unavailable after protein folding and subunit assembly might best explain the ability of BiP to associate post-translationally with various non-immunoglobulin proteins. In conclusion, BiP appears to play a role in the normal transport of Ig molecules by ensuring that only completely assembled heavy chains are secreted or inserted in the surface membrane, thus helping to establish the observed phenotypes for pre-B (cytoplasmic I~), B (surface Ig +, secretion-) and plasma cells. In this way, it may greatly aid the efficient functioning of the immune system at the various stages of B-cell differentiation. Further, it seems likely that the inability of BiP to associate with the heavy chain disease proteins (CH1-) allows these mutant HC to be secreted without LC. In this same vein, BiP may play a role in diminishing the ability of most HC-only iymphomas CH1 + to survive, thus contributing to the phenotype of observed lymphomas and myelomas. This work has been supported by USPHSGrants A 16673, CA 13148 and AI 23526-01. References

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Erratum Characterizationof humanleukocytediflerentiationantigens StephenShaw(1987)Imrnunol.Today8, I-3 A portion of the table in Dr Shaw'sarticlewhich listedthe CD antigensand their distributioncontainederrors introducedwhen correctionswere made late in the journal'sproduction.The correctversior is printed below. We apologisefor this lapse. CD38 CD39 CDw40 CDw41 CDw42 CD43 CD44 CD45 CD45R

45 80 50 95 65-85 220,205,190, 180 220, 205

restrictedmultiplelineages Bcells,macrophages,vessels Bcells,carcinomas,ClRC platelets platelets T cells,granulocytes°red cells,brain T cells,ph'e-B,brain,granulocytes leucoc/tes Bcells,T subset,granulocytes,monocytes

T10 gpllb/llla gplb T200, LCA restrictedT200 2H4 etc.