Chains and heterogens:
PDB Chain Sequences:
>1a3qA (A:) gpylviveqpkqrgfrfrygcegpshgglpgassekgrktyptvkicnyegpakievdlv thsdpprahahslvgkqcselgicavsvgpkdmtaqfnnlgvlhvtkknmmgtmiqklqr qrlrsrpqglteaeqreleqeakelkkvmdlsivrlrfsaflrslplkpvisqpihdsks pgasnlkisrmdktagsvrggdevyllcdkvqkddievrfyeddengwqafgdfsptdvh kqyaivfrtppyhkmkierpvtvflqlkrkrggdvsdskqftyyp
>1a3qB (B:) gpylviveqpkqrgfrfrygcegpshgglpgassekgrktyptvkicnyegpakievdlv thsdpprahahslvgkqcselgicavsvgpkdmtaqfnnlgvlhvtkknmmgtmiqklqr qrlrsrpqglteaeqreleqeakelkkvmdlsivrlrfsaflrslplkpvisqpihdsks pgasnlkisrmdktagsvrggdevyllcdkvqkddievrfyeddengwqafgdfsptdvh kqyaivfrtppyhkmkierpvtvflqlkrkrggdvsdskqftyyp