Chains and heterogens:
PDB Chain Sequences:
>1i2zA (A:) mgflsgkrilvtgvasklsiaygiaqamhregaelaftyqndklkgrveefaaqlgsdiv lqcdvaedasidtmfaelgkvwpkfdgfvhsigfapgdqldgdyvnavtregfkiahdis sysfvamakacrsmlnpgsalltlsylgaeraipnynvmglakasleanvrymanamgpe gvrvnaisagpirtlaasgikdfrkmlahceavtpirrtvtiedvgnsaaflcsdlsagi sgevvhvdggfsiaamnelelk
>1i2zA (A:) gflsgkrilvtgvasklsiaygiaqamhregaelaftyqndklkgrveefaaqlgsdivl qcdvaedasidtmfaelgkvwpkfdgfvhsigfapgdqldgdyvnavtregfkiahdiss ysfvamakacrsmlnpgsalltlsylgaeraipnynvmglakasleanvrymanamgpeg vrvnaisagpirtlaasgikdfrkmlahceavtpirrtvtiedvgnsaaflcsdlsagis gevvhvdggfsiaamne
>1i2zB (B:) mgflsgkrilvtgvasklsiaygiaqamhregaelaftyqndklkgrveefaaqlgsdiv lqcdvaedasidtmfaelgkvwpkfdgfvhsigfapgdqldgdyvnavtregfkiahdis sysfvamakacrsmlnpgsalltlsylgaeraipnynvmglakasleanvrymanamgpe gvrvnaisagpirtlaasgikdfrkmlahceavtpirrtvtiedvgnsaaflcsdlsagi sgevvhvdggfsiaamnelelk
>1i2zB (B:) gflsgkrilvtgvasklsiaygiaqamhregaelaftyqndklkgrveefaaqlgsdivl qcdvaedasidtmfaelgkvwpkfdgfvhsigfapgdqldgdyvnavtregfkiahdiss ysfvamakacrsmlnpgsalltlsylgaeraipnynvmglakasleanvrymanamgpeg vrvnaisagpirtlaasgikdfrkmlahceavtpirrtvtiedvgnsaaflcsdlsagis gevvhvdggfsiaamne