Chains and heterogens:
PDB Chain Sequences:
>1sg4A (A:) gsqrvlvepdagagvavmkfknppvnslslefltelvisleklendksfrgviltsdrpg vfsagldltemcgrspahyagywkavqelwlrlyqsnlvlvsaingacpaggclvaltcd yriladnpryciglnetqlgiiapfwlkdtlentighraaeralqlgllfppaealqvgi vdqvvpeeqvqstalsaiaqwmaipdharqltkammrkatasrlvtqrdadvqnfvsfis kdsiqkslqmylerlkeekg
>1sg4A (A:) sqrvlvepdagagvavmkfknppvnslslefltelvisleklendksfrgviltsdrpgv fsagldltemcgrspahyagywkavqelwlrlyqsnlvlvsaingacpaggclvaltcdy riladnpryciglnetqlgiiapfwlkdtlentighraaeralqlgllfppaealqvgiv dqvvpeeqvqstalsaiaqwmaipdharqltkammrkatasrlvtqrdadvqnfvsfisk dsiqkslqm
>1sg4B (B:) gsqrvlvepdagagvavmkfknppvnslslefltelvisleklendksfrgviltsdrpg vfsagldltemcgrspahyagywkavqelwlrlyqsnlvlvsaingacpaggclvaltcd yriladnpryciglnetqlgiiapfwlkdtlentighraaeralqlgllfppaealqvgi vdqvvpeeqvqstalsaiaqwmaipdharqltkammrkatasrlvtqrdadvqnfvsfis kdsiqkslqmylerlkeekg
>1sg4B (B:) qrvlvepdagagvavmkfknppvnslslefltelvisleklendksfrgviltsdrpgvf sagldltemcgrspahyagywkavqelwlrlyqsnlvlvsaingacpaggclvaltcdyr iladnpryciglnetqlgiiapfwlkdtlentighraaeralqlgllfppaealqvgivd qvvpeeqvqstalsaiaqwmaipdharqltkammrkatasrlvtqrdadvqnfvsfiskd siqkslqmylerlkeekg
>1sg4C (C:) gsqrvlvepdagagvavmkfknppvnslslefltelvisleklendksfrgviltsdrpg vfsagldltemcgrspahyagywkavqelwlrlyqsnlvlvsaingacpaggclvaltcd yriladnpryciglnetqlgiiapfwlkdtlentighraaeralqlgllfppaealqvgi vdqvvpeeqvqstalsaiaqwmaipdharqltkammrkatasrlvtqrdadvqnfvsfis kdsiqkslqmylerlkeekg
>1sg4C (C:) qrvlvepdagagvavmkfknppvnslslefltelvisleklendksfrgviltsdrpgvf sagldltemcgrspahyagywkavqelwlrlyqsnlvlvsaingacpaggclvaltcdyr iladnpryciglnetqlgiiapfwlkdtlentighraaeralqlgllfppaealqvgivd qvvpeeqvqstalsaiaqwmaipdharqltkammrkatasrlvtqrdadvqnfvsfiskd siqkslqmyl