Chain identifier should be blank not A: ATOM   5588 MG    MG A 686     -23.334  11.201 -28.957  1.00 18.60      A   MG  
Chain identifier should be blank not B: ATOM   5638 MG    MG B 687     -39.586 -25.157 -59.842  1.00 21.61      B   MG  
Chain identifier should be blank not A: ATOM   5587 ZN    ZN A 688     -24.380   8.548 -31.670  1.00 43.98      A   ZN  
Chain identifier should be blank not B: ATOM   5637 ZN    ZN B 689     -41.247 -21.405 -60.477  1.00 41.82      B   ZN  

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