Chains and heterogens:
PDB Chain Sequences:
>1sqiA (A:) mttysnkgpkpergrflhfhsvtfwvgnakqaasfycnkmgfeplaykgletgsrevvsh vikqgkivfvlcsalnpwnkemgdhlvkhgdgvkdiafevedcehivqkarergakivre pwveedkfgkvkfavlqtygdtthtlvekinytgrflpgfeaptykdtllpklpscnlei idhivgnqpdqemesasewylknlqfhrfwsvddtqvhteysslrsivvanyeesikmpi nepapgrkksqiqeyvdynggagvqhialrtediittirhlrergmeflavpssyyrllr enlktskiqvkenmdvleelkilvdydekgyllqiftkpmqdrptlfleviqrhnhqgfg agnfnslfkafeeeqalrgnltdletngvrsgm
>1sqiA (A:) gpkpergrflhfhsvtfwvgnakqaasfycnkmgfeplaykgletgsrevvshvikqgki vfvlcsalnpwnkemgdhlvkhgdgvkdiafevedcehivqkarergakivrepwveedk fgkvkfavlqtygdtthtlvekinytgrflpgfeaptykdtllpklpscnleiidhivgn qpdqemesasewylknlqfhrfwsvlrsivvanyeesikmpinepasqiqeyvdynggag vqhialrtediittirhlrergmeflavpssyyrllrenlktskiqvkenmdvleelkil vdydekgyllqiftkpmqdrptlfleviqrhnhqgfgagnfns
>1sqiB (B:) mttysnkgpkpergrflhfhsvtfwvgnakqaasfycnkmgfeplaykgletgsrevvsh vikqgkivfvlcsalnpwnkemgdhlvkhgdgvkdiafevedcehivqkarergakivre pwveedkfgkvkfavlqtygdtthtlvekinytgrflpgfeaptykdtllpklpscnlei idhivgnqpdqemesasewylknlqfhrfwsvddtqvhteysslrsivvanyeesikmpi nepapgrkksqiqeyvdynggagvqhialrtediittirhlrergmeflavpssyyrllr enlktskiqvkenmdvleelkilvdydekgyllqiftkpmqdrptlfleviqrhnhqgfg agnfnslfkafeeeqalrgnltdletngvrsgm
>1sqiB (B:) kgpkpergrflhfhsvtfwvgnakqaasfycnkmgfeplaykgletgsrevvshvikqgk ivfvlcsalnpwnkemgdhlvkhgdgvkdiafevedcehivqkarergakivrepwveed kfgkvkfavlqtygdtthtlvekinytgrflpgfeaptykdtllpklpscnleiidhivg nqpdqemesasewylknlqfhrfwlrsivvanyeesikmpinepasqiqeyvdynggagv qhialrtediittirhlrergmeflavpssyyrllrenlktskiqvkenmdvleelkilv dydekgyllqiftkpmqdrptlfleviqrhnhqgfgagnfns