Chains and heterogens:
PDB Chain Sequences:
>1nstA (A:) dplwqdpcedkrhkdiwskektcdrfpklliigpqktgttalylflgmhpdlssnypsse tfeeiqffnghnyhkgidwymeffpipsnttsdfyfeksanyfdsevaprraaallpkak vltilinpadrayswyqhqrahddpvalkytfhevitagsdassklralqnrclvpgwya thierwlsayhanqilvldgkllrtepakvmdmvqkflgvtntidyhktlafdpkkgfwc qlleggktkclgkskgrkypemdldsraflkdyyrdhnielskllykmgqtlptwlredl q
>1nstA (A:) dplwqdpccdrfpklliigpqktgttalylflgmhpdlssnypssetfeeiqffnghnyh kgidwymeffpisdfyfeksanyfdsevaprraaallpkakvltilinpadrayswyqhq rahddpvalkytfhevitagsdassklralqnrclvpgwyathierwlsayhanqilvld gkllrtepakvmdmvqkflgvtntidyhktlafdpkkgfwcqlleggktkclgkskgrky pemdldsraflkdyyrdhnielskllykmgqtlptwlredlq