Chains and heterogens:
PDB Chain Sequences:
>1e19A (A:) mgkrvvialggnalqqrgqkgsyeemmdnvrktarqiaeiiargyevvithgngpqvgsl llhmdagqatygipaqpmdvagamsqgwigymiqqalknelrkrgmekkvvtiitqtivd kndpafqnptkpvgpfydeetakrlarekgwivkedsgrgwrrvvpspdpkghveaetik klvergviviasggggvpviledgeikgveavidkdlageklaeevnadifmiltdvnga alyygtekeqwlrevkveelrkyyeeghfkagsmgpkvlaairfiewggeraiiahleka vealegktgtqvlp
>1e19A (A:) gkrvvialggnalqqrgqkgsyeemmdnvrktarqiaeiiargyevvithgngpqvgsll lhmdagqatygipaqpmdvagamsqgwigymiqqalknelrkrgmekkvvtiitqtivdk ndpafqnptkpvgpfydeetakrlarekgwivkedsgrgwrrvvpspdpkghveaetikk lvergviviasggggvpviledgeikgveavidkdlageklaeevnadifmiltdvngaa lyygtekeqwlrevkveelrkyyeeghfkagsmgpkvlaairfiewggeraiiahlekav ealegktgtqvlp
>1e19B (B:) mgkrvvialggnalqqrgqkgsyeemmdnvrktarqiaeiiargyevvithgngpqvgsl llhmdagqatygipaqpmdvagamsqgwigymiqqalknelrkrgmekkvvtiitqtivd kndpafqnptkpvgpfydeetakrlarekgwivkedsgrgwrrvvpspdpkghveaetik klvergviviasggggvpviledgeikgveavidkdlageklaeevnadifmiltdvnga alyygtekeqwlrevkveelrkyyeeghfkagsmgpkvlaairfiewggeraiiahleka vealegktgtqvlp
>1e19B (B:) gkrvvialggnalqqrgqkgsyeemmdnvrktarqiaeiiargyevvithgngpqvgsll lhmdagqatygipaqpmdvagamsqgwigymiqqalknelrkrgmekkvvtiitqtivdk ndpafqnptkpvgpfydeetakrlarekgwivkedsgrgwrrvvpspdpkghveaetikk lvergviviasggggvpviledgeikgveavidkdlageklaeevnadifmiltdvngaa lyygtekeqwlrevkveelrkyyeeghfkagsmgpkvlaairfiewggeraiiahlekav ealegktgtqvlp