Chains and heterogens:
PDB Chain Sequences:
>1nsnH (H:) dvqlqesgpglvkpsqslsltctvtgysitsdyawnwirqfpgnklewmgyitysgttsy npslksrisisrdtsknqffmqlnsvttedtgtfyctrgngdwgqgttltvssakttpps vyplapgsaaqtnsmvtlgclvkgyfpepvtvtwnsgslssgvhtfpavlqsdlytlsss vtvpssprpsetvtcnvahpasstkvdkki
>1nsnL (L:) divltqspsslavslgqratiscrasqsvstssfrymhwyqqkpgqpprllikyasnles gvparfsgsgsgtdftlnihpveeedtatyycqhsweipytfgggtkleikradaaptvs ifppsseqltsggasvvcflnnfypkdinvkwkidgserqngvlnswtdqdskdstysms stltltkdeyerhnsytceathktstspivksfnrne
>1nsnS (S:) tkklhkepatlikaidgdtvklmykgqpmtfrlllvdtpetkhpkkgvekygpeasaftk kmvenakkievefdkgqrtdkygrglayiyadgkmvnealvrqglakvayvykpnntheq hlrkseaqakkeklniws