THE CHEMISTRY OF THE LIPIDS OF POSTHEMOLYTIC RESIDUE OR STROMA OF ERYTHROCYTES

VI. SPHINGOLIPIDS OF ERYTHROCYTES WITH RESPECT TO BLOOD GROUP ACTIVITIES

Abstract

1. The isolation and characterization of globoside samples which
TABLE VIII Analytical Constants of Sphingomyelin A, B, O and AB
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are responsible for the ABO-system blood group specificity are described.
2. The ratios of hexosamine components appear to show some correlation with specificity.
3. On mild acid hydrolysis, group activity exhibited by globoside is much more stable than group active mucoids.
4. Sphingomyelin obtained from erythrocytes of all four groups did not show any chemical differences.
The authors wish to thank Mr. B. Kurihara, Miss. R. Ota and Miss. E. Kondo for C, H and N analyses.
The expence for the work were aided by the Scientific Fund furnished by the Ministry of Education, for which the authors wish to express their gratitude.