Chain identifier should be blank not A: ATOM   2656 ZN    ZN A 335      73.577  18.230  32.573  1.00 14.49      A   ZN  
Chain identifier should be blank not B: ATOM   2709 ZN    ZN B 336      52.388  22.791   9.942  1.00 18.25      B   ZN  
Chain identifier should be blank not A: ATOM   2657 ZN    ZN A 337      73.071  27.970  24.932  1.00 13.71      A   ZN  
Chain identifier should be blank not B: ATOM   2710 ZN    ZN B 338      56.792  31.648  17.953  1.00 14.70      B   ZN  

1