We do not sequence our antibodies. The antibody SAB4200733 is an IgG1 antibody.
Regarding the immunogen sequence, the information from our QC team indicates that the immunogen is recombinant human IL6 (GeneID 3569). Interleukin-6 (IL6) is mapped on the human chromosome at 7p15.3. The UniProt accession number is P05231, and the sequence can be found there.