Despite their different overall structure, camelid heavy-chain antibodies share several properties with IgNAR, for example the extended CDR3 loop and the conformation of the CDR1.
Malia a súa diferente estrutura global, os anticorpos de cadea pesada de camélidos comparten varias propiedades cos IgNAR, por exemplo o bucle CDR3 estendido e a conformación do CDR1.