Chains and heterogens:
PDB Chain Sequences:
>1fngA (A:) ikeehtiiqaefyllpdkrgefmfdfdgdeifhvdieksetiwrleefakfasfeaqgal aniavdkanldvmkersnntpdanvapevtvlsrspvnlgepnilicfidkfsppvvnvt wlrngrpvtegvsetvflprddhlfrkfhyltflpstddfydcevdhwgleeplrkhwef ee
>1fngB (B:) kkvitafneglkggggslvgggsggggsrpwfleycksechfyngtqrvrllvryfynle enlrfdsdvgefravtelgrpdaenwnsqpefleqkraevdtvcrhnyeifdnflvprrv eptvtvyptktqplehhnllvcsvsdfypgnievrwfrngkeektgivstglvrngdwtf qtlvmletvpqsgevytcqvehpsltdpvtvew
>1fngC (C:) ikeehtiiqaefyllpdkrgefmfdfdgdeifhvdieksetiwrleefakfasfeaqgal aniavdkanldvmkersnntpdanvapevtvlsrspvnlgepnilicfidkfsppvvnvt wlrngrpvtegvsetvflprddhlfrkfhyltflpstddfydcevdhwgleeplrkhwef ee
>1fngD (D:) kkvitafneglkggggslvgggsggggsrpwfleycksechfyngtqrvrllvryfynle enlrfdsdvgefravtelgrpdaenwnsqpefleqkraevdtvcrhnyeifdnflvprrv eptvtvyptktqplehhnllvcsvsdfypgnievrwfrngkeektgivstglvrngdwtf qtlvmletvpqsgevytcqvehpsltdpvtvew