Chain identifier should be blank not A: ATOM 8977 MN MN A1113 87.272 56.432 34.917 1.00 48.50 A MN Unknown residue MN: ATOM 8977 MN MN 1113 87.272 56.432 34.917 1.00 48.50 A MN Chain identifier should be blank not C: ATOM 9009 MN MN C1114 52.687 37.026 -1.793 1.00 24.37 C MN Unknown residue MN: ATOM 9009 MN MN 1114 52.687 37.026 -1.793 1.00 24.37 C MN 1