Chains and heterogens:
PDB Chain Sequences:
>1cnf_ (-) grihcrlvakkelsrdvrlfrfslpspdqvlglpigkhifvcatiegklcmraytptsmv deighfdllvkvyfknehpkfpngglmtqyldslpvgsyidvkgplghveytgrgsfvin gkqrnarrlamicggsgitpmyqiiqavlrdqpedhtemhlvyanrteddillrdeldrw aaeypdrlkvwyvidqvkrpeegwkysvgfvteavlrehvpeggddtlalacgpppmiqf aispnlekmkydmansfvvf