Chain identifier should be blank not B: ATOM 2616 MN MN B 319 46.2007420.6001022.900 31.00 12.00 B MN Unknown residue MN: ATOM 2616 MN MN 319 46.2007420.6001022.900 31.00 12.00 B MN Chain identifier should be blank not B: ATOM 2617 MN MN B 319 34.9005823.6007035.000201.00 33.00 B MN Unknown residue MN: ATOM 2617 MN MN 319 34.9005823.6007035.000201.00 33.00 B MN 1