ATOM   6770 ZN    ZN A 820       9.010 516.270 341.220 21.00 28.40      A   ZN  
ATOM   6720 FE   HEM A 819      15.589   4.432  24.384  1.00 23.36      A   FE  
ATOM   6813 FE   HEM B 819       8.373   2.570  57.895  1.00 22.51      B   FE