Anti-Blood Group H ab antigen antibody [87-N]

Supplementary information

This supplementary information is collated from multiple sources and compiled automatically.

Biological function summary

The H antigen is important in red blood cell recognition and compatibility in transfusion medicine. It serves as a scaffold for the attachment of specific sugars that form A or B antigens. When present as H/AB in its unaltered form it indicates blood group O. The H antigen is not a part of a complex but interplays with enzymes like the A and B transferases that modify it determining individual blood types. Additionally anti-H antibodies can be found in individuals lacking this antigen like in rare Bombay phenotype emphasizing its importance in blood antigenicity.

Pathways

The H antigen's modification by specific glycosyltransferases is pivotal. These glycosylation pathways dictate the conversion of the H antigen to either the A or B antigens utilizing enzymes encoded by the ABO gene. The enzymatic pathways involving the H antigen relate closely with other proteins like FUT1 and FUT2 which are fucosyltransferases adding fucose to form blood group H. These pathways ensure the diverse presentation of antigens important for immune recognition and compatibility during blood transfusion.