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How many metals does it take to fix N 2 ? A mechanistic overview of biological nitrogen fixation

Open access
Howard, James B., Rees, Douglas C.·2006·Proceedings of the National Academy of Sciences

Abstract

During the process of biological nitrogen fixation, the enzyme nitrogenase catalyzes the ATP-dependent reduction of dinitrogen to ammonia. Nitrogenase consists of two component metalloproteins, the iron (Fe) protein and the molybdenum-iron (MoFe) protein; the Fe protein mediates the coupling of ATP hydrolysis to interprotein electron transfer, whereas the active site of the MoFe protein contains the polynuclear FeMo cofactor, a species composed of seven iron atoms, one molybdenum atom, nine sulfur atoms, an interstitial light atom, and one homocitrate molecule. This Perspective provides an overview of biological nitrogen fixation and introduces three contributions to this special feature that address central aspects of the mechanism and assembly of nitrogenase.

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Research works printed but not linked: 71

  1. 10.1016/S0021-9258(17)37252-6 · DOI
  2. 10.1073/pnas.0603223103 · DOI
  3. 10.1073/pnas.0602130103 · doi:10.1073/pnas.0602130103
  4. 10.1073/pnas.0602647103 · DOI
  5. 10.1021/bi00552a009 · doi:10.1021/bi00552a009
  6. RNF Thorneley, DJ Lowe Molybdenum Enzymes, ed TG Spiro (Wiley, New York), pp. 221–284 (1985).
  7. 10.1038/360553a0 · DOI · Paper page
  8. 10.1126/science.1529354 · DOI · Paper page
  9. 10.1126/science.1529353 · DOI · Paper page
  10. JT Bolin, N Campobasso, SW Muchmore, TV Morgan, LE Mortenson, ACS Symposium Series. Molybdenum Enzymes Cofactors and Model SystemsEI Stiefel, D Coucouvanis, WE Newton (Am Chem Soc, Washington, DC) Vol 535, 186–195 (1993). · DOI
  11. 10.1021/bi9626665 · DOI · Paper page
  12. 10.1006/jmbi.1998.1898 · DOI · Paper page
  13. 10.1006/jmbi.1999.3107 · DOI · Paper page
  14. 10.1021/bi001705g · DOI
  15. 10.1126/science.1073877 · DOI · Paper page
  16. 10.1038/387370a0 · DOI · Paper page
  17. 10.1021/bi026642b · DOI
  18. 10.1021/bi001645e · DOI
  19. 10.1126/science.1115653 · DOI · Paper page
  20. 10.1016/S0021-9258(17)43939-1 · doi:10.1016/s0021-9258(17)43939-1
  21. 10.1016/0162-0134(94)85115-8 · DOI
  22. 10.1073/pnas.69.12.3526 · doi:10.1073/pnas.69.12.3526
  23. JM Berg, RH Holm Iron-Sulfur ProteinsTG Spiro (Wiley, New York), pp. 1–66 (1982).
  24. 10.1021/bi991389 · doi:10.1021/bi991389
  25. 10.1021/ja9712837 · doi:10.1021/ja9712837
  26. 10.1146/annurev.bi.63.070194.001315 · DOI · Paper page
  27. 10.1016/0003-9861(83)90093-0 · doi:10.1016/0003-9861(83)90093-0
  28. 10.1016/S0021-9258(18)83473-1 · doi:10.1016/s0021-9258(18)83473-1
  29. 10.1021/bi00430a062 · doi:10.1021/bi00430a062
  30. 10.1007/978-1-4684-6432-0_13 · doi:10.1007/978-1-4684-6432-0_13
  31. 10.1016/S0021-9258(18)45141-1 · DOI
  32. 10.1073/pnas.74.8.3249 · DOI · Paper page
  33. 10.1021/ja000254k · DOI
  34. 10.1021/ic0301371 · DOI
  35. 10.1021/bi960441o · DOI
  36. 10.1016/0014-5793(96)00019-1 · DOI
  37. 10.1016/j.cbpa.2003.08.005 · DOI · Paper page
  38. 10.1017/S0033583503003913 · DOI · Paper page
  39. 10.1042/bj2770735 · doi:10.1042/bj2770735
  40. 10.1021/cr60316a001 · DOI · Paper page
  41. 10.1126/science.1085326 · DOI · Paper page
  42. 10.1021/ja048713v · doi:10.1021/ja048713v
  43. 10.1021/cr020608l · DOI · Paper page
  44. 10.1073/pnas.0602651103 · DOI
  45. 10.1021/ja029041g · doi:10.1021/ja029041g
  46. 10.1021/ja0301572 · doi:10.1021/ja0301572
  47. 10.1039/b211036a · doi:10.1039/b211036a
  48. 10.1021/ja034383n · DOI
  49. 10.1021/ja0552489 · DOI
  50. 10.1021/ja037792s · DOI
  51. 10.1007/BF00261156 · DOI · Paper page
  52. 10.1126/science.1359643 · DOI
  53. BK Burgess Molybdenum Enzymes, ed TG Spiro (Wiley Interscience, New York), pp. 161–219 (1985).
  54. 10.1021/bi00016a009 · DOI
  55. 10.1021/j100785a001 · DOI · Paper page
  56. 10.1016/S0021-9258(18)68304-8 · doi:10.1016/s0021-9258(18)68304-8
  57. 10.1021/ja048714n · DOI
  58. 10.1021/ja0539342 · doi:10.1021/ja0539342
  59. 10.1021/bi0504409 · DOI
  60. 10.1021/ja043596p · DOI · Paper page
  61. 10.1021/ar040050z · DOI · Paper page
  62. 10.1016/0304-4165(66)90383-7 · DOI · Paper page
  63. 10.1021/bi035247y · doi:10.1021/bi035247y
  64. 10.1038/nature02274 · DOI · Paper page
  65. 10.1038/427498a · doi:10.1038/427498a
  66. 10.1038/329855a0 · DOI
  67. 10.1021/bi00445a040 · doi:10.1021/bi00445a040
  68. 10.1126/science.6585956 · DOI · Paper page
  69. 10.1021/bi00521a007 · doi:10.1021/bi00521a007
  70. RH Burris A Treatise on Dinitrogen Fixation, eds RWF Hardy, F Bottomley, RC Burns (Wiley, New York), pp. 569–604 (1979).
  71. 10.1107/S0021889891004399 · DOI · Paper page

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Metadata

Authors
Howard, J. B., & Rees, D. C.
Venue
Proceedings of the National Academy of Sciences
Published
2006-11-14
Volume
103
Issue
46
Pages
17088-17093
ISSN
  • 0027-8424 (ISSN-L)
  • 1091-6490
OpenAlex
W2039568374
Cited by
232
References
3
FWCI
10.49
Type
journal article
Language
en
Open access
green

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CoChat. (2026). Citation check: How many metals does it take to fix N 2 ? A mechanistic overview of biological nitrogen fixation. https://app.cochat.ai/papers/10.1073/pnas.0603978103
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Howard, J. B., & Rees, D. C. (2006). How many metals does it take to fix N 2 ? A mechanistic overview of biological nitrogen fixation. Proceedings of the National Academy of Sciences. https://doi.org/10.1073/pnas.0603978103

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