Chains and heterogens:
PDB Chain Sequences:
>4ubsA (A:) apvafpqdrtcpydpptaydplregrplsrvslydgrsvwvvtghaaarallsdqrlssd rtlprfpatterfeavrtrrvallgvddpehrtqrrmlvpsftlkraaalrpriqetvdg lldameaqgppaelvsafalplpsmvicallgvpyadhdffesqsrrllrgpgiaevqda raqlddylyalidrkrkepgdgllddliqeqlnrgtvdraelvslatllliaghettanm islgtftllrhpeqlaelraepglmpaaveellrflsiadgllrvatedievagttirad egvvfatsvinrdaagfaepdaldwhrsarhhvafgfgihqclgqnlaraemeialgtlf erlpglrlaapadeipfkpgdtiqgmlelpvtw