Chain identifier should be blank not A: ATOM 7861 MN MN A 957 -6.446 71.183 32.675 1.00 51.00 A MN Unknown residue MN: ATOM 7861 MN MN 957 -6.446 71.183 32.675 1.00 51.00 A MN Chain identifier should be blank not A: ATOM 7862 MN MN A 958 -6.700 74.308 34.871 1.00 59.36 A MN Unknown residue MN: ATOM 7862 MN MN 958 -6.700 74.308 34.871 1.00 59.36 A MN 1