Chains and heterogens:
PDB Chain Sequences:
>4pu9A (A:) mhhhhhhsnsydsssikvlkgldavrkrpgmyigdtddgtglhhmvfevvdnaidealag hckeiivtihadnsvsvqddgrgiptgihpeegvsaaevimtvlhaggkfddnsykvsgg lhgvgvsvvnalsqklelviqregkihrqiyehgvpqaplavtgetektgtmvrfwpsle tftnvtefeyeilakrlrelsflnsgvsirlrdkrdgkedhfhyeggikafveylnknkt pihpnifyfstekdgigvevalqwndgfqeniycftnnipqrdggthlagfraamtrtln aymdkegyskkakvsatgddaregliavvsvkvpdpkfssqtkdklvssevksaveqqmn ellaeyllenptdakivvgkiidaarareaarraremt
>4pu9A (A:) sydsssikvlkgldavrkrpgmyigdtddgtglhhmvfevvdnaidealaghckeiivti hadnsvsvqddgrgiptgihpeegvsaaevimtvlhaggkfddnsykvsgglhgvgvsvv nalsqklelviqregkihrqiyehgvpqaplavtgetektgtmvrfwpsletftnvtefe yeilakrlrelsflnsgvsirlrdkrdgkedhfhyeggikafveylnknktpihpnifyf stekdgigvevalqwndgfqeniycftnnipqrdggthlagfraamtrtlnaymdkegys kregliavvsvkvpdpkfssqtkdklvssevksaveqqmnellaeyllenptdakivvgk iidaarareaarra