Chain identifier should be blank not A: ATOM 7835 MN MN A 955 -6.672 75.075 33.948 1.00 44.94 A MN Unknown residue MN: ATOM 7835 MN MN 955 -6.672 75.075 33.948 1.00 44.94 A MN Chain identifier should be blank not A: ATOM 7836 MN MN A 956 -6.453 71.951 32.008 1.00 37.45 A MN Unknown residue MN: ATOM 7836 MN MN 956 -6.453 71.951 32.008 1.00 37.45 A MN 1