Chains and heterogens:
PDB Chain Sequences:
>1exbA (A:) lqfyrnlgksglrvsclglgtwvtfggqitdemaehlmtlaydnginlfdtaevyaagka evvlgniikkkgwrrsslvittkifwggkaeterglsrkhiieglkaslerlqleyvdvv fanrpdpntpmeetvramthvinqgmamywgtsrwssmeimeaysvarqfnlippiceqa eyhmfqrekvevqlpelfhkigvgamtwsplacgivsgkydsgippysraslkgyqwlkd kilseegrrqqaklkelqaiaerlgctlpqlaiawclrnegvssvllgasnaeqlmenig aiqvlpklsssivheidsilgnkpyskkdyrs
>1exbA (A:) lqfyrnlgksglrvsclglgtwvtfggqitdemaehlmtlaydnginlfdtaevyaagka evvlgniikkkgwrrsslvittkifwggkaeterglsrkhiieglkaslerlqleyvdvv fanrpdpntpmeetvramthvinqgmamywgtsrwssmeimeaysvarqfnlippiceqa eyhmfqrekvevqlpelfhkigvgamtwsplacgivsgkydsgippysraslkgyqwlkd kilseegrrqqaklkelqaiaerlgctlpqlaiawclrnegvssvllgasnaeqlmenig aiqvlpklsssivheidsilgnkpys
>1exbE (E:) qadhddheccervvinisglrfetqlktlaqfpntllgnpkkrmryfdplrneyffdrnr psfdailyyyqsggrlrrpvnvpldmfseeikfyelgeeamek
>1exbE (E:) cervvinisglrfetqlktlaqfpntllgnpkkrmryfdplrneyffdrnrpsfdailyy yqsggrlrrpvnvpldmfseeikfyelgeea