1.20.2.1	Iron	protein contains 10.6 mol/alpha3beta3 iron and 2.1 mol/alpha3beta3 molybdenum	658195	
1.20.2.1	Iron	protein contains two molybdenum and 9 or 10 iron atoms per alpha2beta2 unit	715352	
1.20.2.1	Molybdenum	protein contains 10.6 mol iron per alpha3beta3 unit and 2.1 mol molybdenum per alpha3beta3 molybdenum	658195