Chains and heterogens:
PDB Chain Sequences:
>2z1sA (A:) mhhhhhhsentfifpatfmwgtstssyqieggtdeggrtpsiwdtfcqipgkviggdcgd vacdhfhhfkedvqlmkqlgflhyrfsvawprimpaagiineegllfyehlldeielagl ipmltlyhwdlpqwiedeggwtqretiqhfktyasvimdrfgerinwwntinepycasil gygtgehapghenwreaftaahhilmchgiasnlhkekgltgkigitlnmehvdaaserp edvaaairrdgfinrwfaeplfngkypedmvewygtylngldfvqpgdmeliqqpgdflg inyytrsiirstndasllqveqvhmeepvtdmgweihpesfyklltriekdfskglpili tengaamrdelvngqiedtgrqryieehlkachrfieeggqlkgyfvwsfldnfewawgy skrfgivhinyetqertpkqsalwfkqmmakngf
>2z1sA (A:) ntfifpatfmwgtstssyqieggtdeggrtpsiwdtfcqipgkviggdcgdvacdhfhhf kedvqlmkqlgflhyrfsvawprimpaagiineegllfyehlldeielaglipmltlyhw dlpqwiedeggwtqretiqhfktyasvimdrfgerinwwntinepycasilgygtgehap ghenwreaftaahhilmchgiasnlhkekgltgkigitlnmehvdaaserpedvaaairr dgfinrwfaeplfngkypedmvewygtylngldfvqpgdmeliqqpgdflginyytrsii rstndasllqveqvhmeepvtdmgweihpesfyklltriekdfskglpilitengaamrd elvngqiedtgrqryieehlkachrfieeggqlkgyfvwsfldnfewawgyskrfgivhi nyetqertpkqsalwfkqmmakngf