Chains and heterogens:
PDB Chain Sequences:
>1e3qA (A:) hsellvntksgkvmgtrvpvlsshisaflgipfaeppvgnmrfrrpepkkpwsgvwnast ypnncqqyvdeqfpgfsgsemwnpnremsedclylniwvpsprpksttvmvwiygggfys gsstldvyngkylayteevvlvslsyrvgafgflalhgsqeapgnvglldqrmalqwvhd niqffggdpktvtifgesaggasvgmhilspgsrdlfrrailqsgspncpwasvsvaegr rravelgrnlncnlnsdeelihclrekkpqelidvewnvlpfdsifrfsfvpvidgeffp tslesmlnsgnfkktqillgvnkdegsffllygapgfskdseskisredfmsgvklsvph andlgldavtlqytdwmddnngiknrdglddivgdhnvicplmhfvnkytkfgngtylyf fnhrasnlvwpewmgvihgyeiefvfglplvkelnytaeeealsrrimhywatfaktgnp nephsqeskwplfttkeqkfidlntepmkvhqrlrvqmcvfwnqflpkllnat