Chains and heterogens:
PDB Chain Sequences:
>1fvdA (A:) diqmtqspsslsasvgdrvtitcrasqdvntavawyqqkpgkapklliysasflesgvps rfsgsrsgtdftltisslqpedfatyycqqhyttpptfgqgtkveikrtvaapsvfifpp sdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstlt lskadyekhkvyacevthqglsspvtksfnrgec
>1fvdB (B:) evqlvesggglvqpggslrlscaasgfnikdtyihwvrqapgkglewvariyptngytry adsvkgrftisadtskntlylqmnslraedtavyycsrwggdgfyamdvwgqgtlvtvss astkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqss glyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvepksc
>1fvdC (C:) diqmtqspsslsasvgdrvtitcrasqdvntavawyqqkpgkapklliysasflesgvps rfsgsrsgtdftltisslqpedfatyycqqhyttpptfgqgtkveikrtvaapsvfifpp sdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstlt lskadyekhkvyacevthqglsspvtksfnrgec
>1fvdD (D:) evqlvesggglvqpggslrlscaasgfnikdtyihwvrqapgkglewvariyptngytry adsvkgrftisadtskntlylqmnslraedtavyycsrwggdgfyamdvwgqgtlvtvss astkgpsvfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqss glyslssvvtvpssslgtqtyicnvnhkpsntkvdkkvepksc