Chains and heterogens:
PDB Chain Sequences:
>1ngyA (A:) elvmtqtpkfmsttvgdrvsitckasqnvgtpvawyqqkpgqspklliysasnrytgvpd rftgsgsgtdftltisnmqsedladyfcqqyssypltfgggtkveikrtvaapsvfifpp sdeqlksgtasvvcllnnfypreakvqwkvdnalqsgnsqesvteqdskdstyslsstlt lskadyekhkvyacevthqglsspvtksfnrge
>1ngyB (B:) qvqllesgaelvkpgasvklsckasgytftsywmhwvkqrpgrglewigmidpnsggtky nekfkskatltvdkpsntaymqlssltsedsavyyctrrdmdywgagttvtvssastkgp svfplapsskstsggtaalgclvkdyfpepvtvswnsgaltsgvhtfpavlqssglysls svvtvpssslgtqtyicnvnhkpsntkvdkkvepks