Chains and heterogens:
PDB Chain Sequences:
>1k56A (A:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiigg
>1k56A (A:) itentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiigletg viknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfsy gnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapeyl vhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimese gii
>1k56B (B:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiigg
>1k56B (B:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egii
>1k56C (C:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiigg
>1k56C (C:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfsygnqnisggi dkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapeylvhsktgfsg vgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimesegiigg
>1k56D (D:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiigg
>1k56D (D:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfsygnqn isggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapeylvhsk tgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimesegiig g