A protein complex composed of two identical immunoglobulin heavy chains of the IgNAR isotype held together by disulfide bonds and lacking immunoglobulin light chains.
Source:ISBN:0781765196,
PMID:12543123,
PMID:16051357,
GOC:add
Comment
Note that a heavy chain immunoglobulin complex has the function of antigen binding if a suitable antigen is available. Note that IgNAR is found in serum of cartilaginous fish as a heavy chain dimer without immunoglobulin light chains. Note that HCab is found in camels as a heavy chain dimer without immunoglobulin light chains.