Chains and heterogens:
PDB Chain Sequences:
>1nsaA (A:) fegekvfrvnvedendiselhelastrqidfwkpdsvtqikphstvdfrvkaedilaved fleqnelqyevlinnlrsvleaqfdsvsrttghsyekynnwetieawteqvtsknpdlis rsaigttfdgdniyllkvgkpgsnkpaifmdcgfharewisqafcqwfvrdavrtygyea hmtefldnldfyvlpvlnidgyiytwtknrmwrktrstnagssctgtdpnrnfnagwctv gasvnpcnetycgsaaeseketkaladfirnnlssikayltihsysqmilypysydyklp endaelnslakgavkelaslygtsysygpgsttiypaaggsddwaynqgikysftfelrd kgrfgfvlpesqiqatcqetmlavkyvtnytlehl