Chains and heterogens:
PDB Chain Sequences:
>6gw4A (A:) kpftlpvltigemtnsrfpapidmlytspngnvvvqpqngrctldgelqgstqlvpanvc afrgkitarivdqaahqwhmqidnpngtlfdptedvpaplgtpdfkakifgvisqrndyn dgsqgpanrahdavvpttsakftpklgsilvgtwenndietqpskftpvgllemndfnqw slpnysgaltlnmglapavfptfpgeqilffrsfiplkgghgnpaidcllpqewiqhfyq esapsqtsvaliryvnpdtgrvlfegklhrqgfitiaksgdgpivvppngyfrfdswvnq fyslapm