Chains and heterogens:
PDB Chain Sequences:
>1bv4A (A:) senvgkkyfmssvrrmplnrakalcselqgtvatprnaeenraiqnvakdvaflgitdqr tenvfedltgnrvrytnwnegepnnvgsgencvvlltngkwndvpcsdsflvvcefsd
>1bv4A (A:) kyfmssvrrmplnrakalcselqgtvatprnaeenraiqnvakdvaflgitdqrtenvfe dltgnrvrytnwnegepnnvgsgencvvlltngkwndvpcsdsflvvcefsd
>1bv4B (B:) senvgkkyfmssvrrmplnrakalcselqgtvatprnaeenraiqnvakdvaflgitdqr tenvfedltgnrvrytnwnegepnnvgsgencvvlltngkwndvpcsdsflvvcefsd
>1bv4B (B:) kyfmssvrrmplnrakalcselqgtvatprnaeenraiqnvakdvaflgitdqrtvfedl tgnrvrytnwnegepnnvgsgencvvlltngkwndvpcsdsflvvcefsd
>1bv4C (C:) senvgkkyfmssvrrmplnrakalcselqgtvatprnaeenraiqnvakdvaflgitdqr tenvfedltgnrvrytnwnegepnnvgsgencvvlltngkwndvpcsdsflvvcefsd
>1bv4C (C:) kyfmssvrrmplnrakalcselqgtvatprnaeenraiqnvakdvaflgiedltgcvvll tngkwndvpcsdsflvvcefs
>1bv4D (D:) senvgkkyfmssvrrmplnrakalcselqgtvatprnaeenraiqnvakdvaflgitdqr tenvfedltgnrvrytnwnegepnnvgsgencvvlltngkwndvpcsdsflvvcefsd
>1bv4D (D:) kkyfmssvrrmplnrakalcselqgtvatprnaeenraiqnvakdvaflgitdqrtenvf edltgnrvrytnwnegepnnencvvlltngkwndvpcsdsflvvcefsd