Chains and heterogens:
PDB Chain Sequences:
>1fua_ (-) mernklarqiidtclemtrlglnqgtagnvsvryqdgmlitptgipyeklteshivfidg ngkheegklpssewrfhmaayqsrpdanavvhnhavhctavsilnrsipaihymiaaagg nsipcapyatfgtrelsehvalalknrkatllqhhgliacevnlekalwlahevevlaql ylttlaitdpvpvlsdeeiavvlekf