Chains and heterogens:
PDB Chain Sequences:
>1cuz_ (-) rttrddlingnsascadvifiyargstetgnlgtlgpsiasnlesafgkdgvwiqgvgga yratggdnalprgtssaairemlglfqqantkcpdatliaggysqgaalaaasiedldsa irdkiagtvlfgytknlqnrgripnypadrtkvfcntgdlvctgsgivaaphlaygpdar gpapefliekvravrg