Chains and heterogens:
PDB Chain Sequences:
>1tteA (A:) ssrakrimkeiqavkddpaahitlefvsesdihhlkgtflgppgtpyeggkfvvdievpm eypfkppkmqfdtkvyhpnissvtgaicldilrnawspvitlksalislqallqspepnd pqdaevaqhylrdresfnktaalwtrlyasetsngqkgnveesdlygidhdlidefesqg fekdkivevlrrlgvksldpndnntanriieellk