Chains and heterogens:
PDB Chain Sequences:
>4hefA (A:) apadrlkalvdaavqpvmkandipglavaislkgephyfsyglaskedgrrvtpetlfei gsvsktftatlagyaltqdkmrlddrasqhwpalqgsrfdgislldlatytagglplqfp dsvqkdqaqirdyyrqwqptyapgsqrlysnpsiglfgylaarslgqpferlmeqqvfpa lgleqthldvpeaalaqyaqgygkrdrplrvgpgpldaegygvktsaadllrfvdanlhp erldrpwaqaldathrgyykvgdmtqglgweaydwpislkrlqagnstpmalqphriarl papqalegqrllnktgstngfgayvafvpgrdlglvilanrnypnaervkiayailsgle