Chains and heterogens:
PDB Chain Sequences:
>2xzgA (A:) fmaqilpirfqehlqlqnlginpanigfstltmesdkficirekvgeqaqvviidmndps npirrpisadsaimnpaskvialkagktlqifniemkskmkahtmtddvtfwkwislntv alvtdnavyhwsmegesqpvkmfdrhsslagcqiinyrtdakqkwllltgisaqqnrvvg amqlysvdrkvsqpieghaasfaqfkmegnaeestlfcfavrgqaggklhiievgtpptg nqpfpkkavdvffppeaqndfpvamqisekhdvvflitkygyihlydletgtciymnris getifvtapheatagiigvnrkgqvlsvcveeeniipyitnvlqnpdlalrmavrnnlag aeelf
>2xzgA (A:) fmaqilpirfqehlqlqnlginpanigfstltmesdkficirekvgeqaqvviidmndps npirrpisadsaimnpaskvialkagktlqifniemkskmkahtmtddvtfwkwislntv alvtdnavyhwsmegesqpvkmfdrhsslagcqiinyrtdakqkwllltgisaqqnrvvg amqlysvdrkvsqpieghaasfaqfkmegnaeestlfcfavrgqaggklhiievgtpptg nqpfpkkavdvffppeaqndfpvamqisekhdvvflitkygyihlydletgtciymnris getifvtapheatagiigvnrkgqvlsvcveeeniipyitnvlqnpdlalrmavrnnl