Chains and heterogens:
PDB Chain Sequences:
>1grcA (A:) mnivvlisgngsnlqaiidacktnkikgtvravfsnkadafglerarqagiathtliasa fdsreaydreliheidmyapdvvvlagfmrilspafvshyagrllnihpsllpkypglht hrqalengdeehgtsvhfvtdeldggpvilqakvpvfagdsedditarvqtqehaiyplv iswfadgrlkmhenaawldgqrlppqgya
>1grcA (A:) mnivvlisgngsnlqaiidacktnkikgtvravfsnkadafglerarqagiathtliasa fdsreaydreliheidmyapdvvvlagfmrilspafvshyagrllnihpsllpdeehgts vhfvtdeldggpvilqakvpvfagdsedditarvqtqehaiyplviswfadgrlkmhena awldgqrlppqgya
>1grcB (B:) mnivvlisgngsnlqaiidacktnkikgtvravfsnkadafglerarqagiathtliasa fdsreaydreliheidmyapdvvvlagfmrilspafvshyagrllnihpsllpkypglht hrqalengdeehgtsvhfvtdeldggpvilqakvpvfagdsedditarvqtqehaiyplv iswfadgrlkmhenaawldgqrlppqgya
>1grcB (B:) mnivvlisgngsnlqaiidacktnkikgtvravfsnkadafglerarqagiathtliasa fdsreaydreliheidmyapdvvvlagfmrilspafvshyagrllnihpsllpkhgtsvh fvtdeldggpvilqakvpvfagdsedditarvqtqehaiyplviswfadgrlkmhenaaw ldgqrlppqgya