Chains and heterogens:
PDB Chain Sequences:
>1x54A (A:) miekvycqevkpeldgkkvrlagwvytnmrvgkkiflwirdstgivqavvaknvvgeetf ekakklgressvivegivkaderapggaevhvekleviqavsefpipenpeqaspellld yrhlhirtpkasaimkvketlimaarewllkdgwhevfppilvtgaveggatlfklkyfd kyaylsqsaqlyleaaifglekvwsltpsfraeksrtrrhltefwhleleaawmdlwdim kveeelvsymvqrtlelrkkeiemfrddlttlknteppfprisydeaidilqskgvnvew gddlgadeervlteefdrpffvygypkhikafymkedpndprkvlasdmlapegygeiig gsqreddydkllnrileegmdpkdyewyldlrrygsvphsgfglgverlvawvlkldhir waalfprtparlyp