Chains and heterogens:
PDB Chain Sequences:
>4aldA (A:) pyqypaltpeqkkelsdiahrivapgkgilaadestgsiakrlqsigtenteenrrfyrq llltaddrvnpciggvilfhetlyqkaddgrpfpqvikskggvvgikvdkgvvplagtng etttqgldglsercaqykkdgadfakwrcvlkigehtpsalaimenanvlaryasicqqn givpivepeilpdgdhdlkrcqyvtekvlaavykalsdhhiylegtllkpnmvtpghact qkfsheeiamatvtalrrtvppavtgitflsggqseeeasinlnainkcpllkpwaltfs ygralqasalkawggkkenlkaaqeeyvkralanslacqgkytpsgqagaaaseslfvsn hay