Chains and heterogens:
PDB Chain Sequences:
>1zc2A (A:) aakteqqiadivnrtitplmqeqaipgmavaviyqgkpyyftwgkadiannhpvtqqtlf elgsvsktfngvlggdaiargeiklsdpvtkywpeltgkqwqgirllhlatytagglplq ipddvrdkaallhfyqnwqpqwtpgakrlyanssiglfgalavkpsgmsyeeamtrrvlq plklahtwitvpqneqkdyawgyregkpvhvspgqldaeaygvkssvidmarwvqanmda shvqektlqqgialaqsrywrigdmyqglgwemlnwplkadsiingsdskvalaalpave vnppapavkaswvhktgstggfgsyvafvpeknlgivmlanksypnpvrveaawrilekl q
>1zc2A (A:) teqqiadivnrtitplmqeqaipgmavaviyqgkpyyftwgkadiannhpvtqqtlfelg svsktfngvlggdaiargeiklsdpvtkywpeltgkqwqgirllhlatytagglplqipd dvrdkaallhfyqnwqpqwtpgakrlyanssiglfgalavkpsgmsyeeamtrrvlqplk lahtwitvpqneqkdyawgyregkpvhvspgqldaeaygvkssvidmarwvqanmdashv qektlqqgialaqsrywrigdmyqglgwemlnwplkadsiingsdskvalaalpavevnp papavkaswvhktgstggfgsyvafvpeknlgivmlanksypnpvrveaawrileklq
>1zc2B (B:) aakteqqiadivnrtitplmqeqaipgmavaviyqgkpyyftwgkadiannhpvtqqtlf elgsvsktfngvlggdaiargeiklsdpvtkywpeltgkqwqgirllhlatytagglplq ipddvrdkaallhfyqnwqpqwtpgakrlyanssiglfgalavkpsgmsyeeamtrrvlq plklahtwitvpqneqkdyawgyregkpvhvspgqldaeaygvkssvidmarwvqanmda shvqektlqqgialaqsrywrigdmyqglgwemlnwplkadsiingsdskvalaalpave vnppapavkaswvhktgstggfgsyvafvpeknlgivmlanksypnpvrveaawrilekl q
>1zc2B (B:) qqiadivnrtitplmqeqaipgmavaviyqgkpyyftwgkadiannhpvtqqtlfelgsv sktfngvlggdaiargeiklsdpvtkywpeltgkqwqgirllhlatytagglplqipddv rdkaallhfyqnwqpqwtpgakrlyanssiglfgalavkpsgmsyeeamtrrvlqplkla htwitvpqneqkdyawgyregkpvhvspgqldaeaygvkssvidmarwvqanmdashvqe ktlqqgialaqsrywrigdmyqglgwemlnwplkadsiingsdskvalaalpavevnppa pavkaswvhktgstggfgsyvafvpeknlgivmlanksypnpvrveaawrileklq