https://www.ncbi.nlm.nih.gov/Structure/pdb/7MXX
7MXX: Crystal structure of human exonuclease 1 Exo1 (R92A) in complex with 5' flap DNA (uf4)
DNA (5'-D(*CP*GP*CP*TP*AP*GP*TP*GP*AP*C)-3')DNA (5'-D(P*TP*CP*TP*CP*GP*TP*CP*AP*CP*TP*AP*GP*CP*G)-3')Exonuclease 1CALCIUM IONMANGANESE (II) ION
https://www.trend.az/iran/nuclearp/2924890.html
Iran resumes producing UF4 after nine years - Trend.Az
Jul 4, 2018 - The governor of Iranian Isfahan province said July 4 that the production of uranium tetrafluoride has been resumed at Isfahan USF Facility.
after nineiranresumesproducinguf4