Chains and heterogens:
PDB Chain Sequences:
>1zrlA (A:) grqtssnnevlsncrekrkgmkwdckkkndrsnyvcipdrriqlcivnlaiiktytketm kdhfieaskkesqlllkkndnkynskfcndlknsfldyghlamgndmdfggystkaenki qevfkgahgeisehkiknfrkkwwnefreklweamlsehknninncknipqeelqitqwi kewhgefllerdnraklpkskcknnalyeacekecidpcmkyrdwiirskfewhtlskey etqkvpkenaenylikisenkndakvslllnncdaeyskycdckhtttlvksvlngndnt ikekrehidlddfskfgcdknsvdtntkvweckkpyklstkdvcvpprrqelclgnidri ydknllmikehilaiaiyesrilkrkyknkddkevckiinktfadirdiiggtdywndls nrklvgkintnsnyvhrnkqndklfrdewwkvikkdvwnviswvfkdktvckeddienip qffrwfsewgddycqdktkmietlkveckekpceddnckrkcnsykewiskkkeeynkqa kqyqeyqkgnnykmysefksikpevylkkysekcsnlnfedefkeelhsdyknkctmcpe vk
>1zrlA (A:) nevlsncrekrkgmkwdckkkndrsnyvcipdrriqlcivnlaiiktytketmkdhfiea skkesqlllkkndnkynskfcndlknsfldyghlamgndmdfggystkaenkiqevfkga hgeisehkiknfrkkwwnefreklweamlsehknnicknipqeelqitqwikewhgefll erdnraklpkskcknnalyeacekecidpcmkyrdwiirskfewhtlskeyetqkvpken aenylikisenkndakvslllnncdaeyskycdckhtttlvksvlngndntikekrehid lddfskfgcdknsvdtntkvweckkpyklstkdvcvpprrqelclgnidriydknllmik ehilaiaiyesrilkrkyknkddkevckiinktfadirdiiggtdywndlsnrklvgkin tnsnyvhrnkqndklfrdewwkvikkdvwnviswvfkdktvckeddienipqffrwfsew gddycqdktkmietlkvecceddnckrkcnsykewiskkkeeynkqakqyqeyqkgnnyk mysefksikpevylkkysekcsnlnfedefkeelhsdyknkct