Chains and heterogens:
PDB Chain Sequences:
>1i9tA (A:) kipprwlncprrgqpvagrflplktmlgprydsqvaeenrfhpsmlsnylkslkvkmsll vdltntsrfydrndiekegikyiklqckghgecpttentetfirlcerfnersppeligv hcthgfnrtgflicaflvekmdwsieaavatfaqarppgiykgdylkelfrrygdieeap pppvlpdwcf