> 1i50_A_str_9 (A: 826-845, 1065-1113, 1331-1385) DNA-DIRECTED RNA POLYMERASE II LARGEST SUBUNIT DTAVKTAETGYIQRRLVKALGVLAAQSIGEPATQMTLKKVTSGVPRLKEILNVAKNMKTS FIDIMEVLGIEAGRAALYKEVYNVIASDGSYVNYRHMALLVDVMTTQGGLTSVT