Chains and heterogens:
PDB Chain Sequences:
>1jf2A (A:) avklktdfdnprwikrhkhmfdfldingngkitldeivskasddicakleatpeqtkrhq vcveaffrgcgmeygkeiafpqfldgfkqlatselkkwarneptlirewgdavfdifdkd gsgtitldewkaygkisgispsqedceatfrhcdldnsgdldvdemtrqhlgfwytldpe adglygngvp