Domains and motifs in PDB 1i1rlink ?
Chain A ?
Domain architecture
Legend
 Lep_receptor_Ig (3-97)   
 IL6Ra-bind (108-195)   
 fn3 (200-294)   

The following interactions involve chain A:

Domain/Motif Chain Domain/Motif Chain Interaction
IL6 (Pfam) B fn3 (Pfam) A interaction
IL6 (Pfam) B IL6Ra-bind (Pfam) A interaction
IL6Ra-bind (Pfam) A fn3 (Pfam) A interaction
IL6Ra-bind (Pfam) A Lep_receptor_Ig (Pfam) A interaction
Chain B ?
Domain architecture
Legend
 IL6 (4-164)   

The following interactions involve chain B:

Domain/Motif Chain Domain/Motif Chain Interaction
IL6 (Pfam) B fn3 (Pfam) A interaction
IL6 (Pfam) B IL6Ra-bind (Pfam) A interaction