Chains and heterogens:
PDB Chain Sequences:
>1k54A (A:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiigg
>1k54A (A:) itentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiigletg viknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfsy gnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapeyl vhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimese giig
>1k54B (B:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiigg
>1k54B (B:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiig
>1k54C (C:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiigg
>1k54C (C:) itentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiigletg viknehqvfkwdamkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfsygnqn isggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapeylvhsk tgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimesegiig
>1k54D (D:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgkpramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfs ygnqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapey lvhsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimes egiigg
>1k54D (D:) sitentswnkefsaeavngvfvlckssskscatndlaraskeylpastfkipnaiiglet gviknehqvfkwdgramkqwerdltlrgaiqvsavpvfqqiarevgevrmqkylkkfsyg nqnisggidkfwlegqlrisavnqvefleslylnklsaskenqlivkealvteaapeylv hsktgfsgvgtesnpgvawwvgwveketevyffafnmdidnesklplrksiptkimeseg iigg