A heterodimeric protein that is a cell surface antigen associated with lymphocyte activation. The initial characterization of this protein revealed one identifiable heavy chain (FUSION REGULATORY PROTEIN 1, HEAVY CHAIN) and an indeterminate smaller light chain. It is now known that a variety of light chain subunits (FUSION REGULATORY PROTEIN 1, LIGHT CHAINS) can dimerize with the heavy chain. Depending upon its light chain composition a diverse array of functions can be found for this protein. Functions include: type L amino acid transport, type y+L amino acid transport and regulation of cellular fusion.

Descriptor ID	D027261
MeSH Number(s)	D12.776.157.530.200.374.750.500 D12.776.157.530.200.500.500.500 D12.776.157.530.937.313.500 D12.776.543.585.200.374.750.500 D12.776.543.585.200.500.500.500 D12.776.543.585.937.313.500
Concept/Terms	Fusion Regulatory Protein-1 Fusion Regulatory Protein-1 Fusion Regulatory Protein 1 Regulatory Protein-1, Fusion 4F2-antigen CD98 Antigens FRP-1 protein FRP 1 protein CD98 Transport Proteins Transport Proteins, CD98 Antigen 4F2 Antigens, CD98 CD98 Antigen Antigen, CD98 4F2 Antigen Human 4F2 Antigen Human 4F2 Antigen 4F2 Antigen, Human Human Lymphocyte Activation Antigen 4F2 H4F2 Antigen Human 4F2 Cell-Surface Antigen Human 4F2 Cell Surface Antigen

Below are MeSH descriptors whose meaning is more general than "Antigens, CD98".

Below are MeSH descriptors whose meaning is related to "Antigens, CD98".

Below are MeSH descriptors whose meaning is more specific than "Antigens, CD98".