title: Purification of nitrogenase and crystallization of its Mo-Fe protein.
mesh_terms: D000596:Amino Acids / Q000032:analysis; D001395:Azotobacter / Q000201:enzymology; D002848:Chromatography, DEAE-Cellulose; D003460:Crystallization; D004355:Drug Stability; D004578:Electron Spin Resonance Spectroscopy; D005069:Evaluation Studies as Topic; D006358:Hot Temperature; D006859:Hydrogen / Q000378:metabolism; D006863:Hydrogen-Ion Concentration; D007501:Iron / Q000032:analysis; D046911:Macromolecular Substances; D009682:Magnetic Resonance Spectroscopy; D008667:Metalloproteins / Q000302:isolation & purification*; D008722:Methods; D008982:Molybdenum / Q000032:analysis; D009587:Nitrogen Isotopes; D009591:Nitrogenase / Q000302:isolation & purification*; D011479:Protamines; D012995:Solubility; D013053:Spectrophotometry; D013056:Spectrophotometry, Ultraviolet; D013057:Spectrum Analysis; D013438:Sulfhydryl Compounds / Q000032:analysis; D013696:Temperature
chemical_list: D000596:Amino Acids; D046911:Macromolecular Substances; D008667:Metalloproteins; D009587:Nitrogen Isotopes; D011479:Protamines; D013438:Sulfhydryl Compounds; D006859:Hydrogen; D008982:Molybdenum; D007501:Iron; D009591:Nitrogenase