1. The role of nickel in acetyl-CoA synthesis by the bifunctional enzyme CO dehydrogenase/acetyl-CoA synthase: enzymology and model chemistry

   • S. W. Ragsdale
   • Charles G. Riordan

   MINIREVIEW Pages: 489 - 493

2. Post-transcriptional regulation of genes of iron metabolism in mammalian cells

   • T. A. Rouault
   • Richard D. Klausner

   MINIREVIEW Pages: 494 - 499

3. Mechanism of metal-promoted catalysis of nucleic acid hydrolysis by Escherichia coli ribonuclease H

   • C. B. Black
   • M. Foster
   • J. A. Cowan

   ORIGINAL ARTICLE Pages: 500 - 506

4. Characterization of bio-related vanadium and zinc complexes containing tetradentate dithiolate-disulfide, -diamine and -amine-amide ligands

   • Wenerios Tsagkalidis
   • D. Rehder

   ORIGINAL ARTICLE Pages: 507 - 514

5. Probing protein electrostatic interactions through temperature/reduction potential profiles

   • Roberto P. Christen
   • Spyros I. Nomikos
   • E. T. Smith

   ORIGINAL ARTICLE Pages: 515 - 522

6. ¹H NMR studies of the Fe₇S₈ ferredoxin from Bacillus schlegelii: a further attempt to understand Fe₃S₄ clusters

   • Shigetoshi Aono
   • I. Bertini
   • Maria Silvia Viezzoli

   ORIGINAL ARTICLE Pages: 523 - 528

7. Electrochemistry of the Cu_A domain of Thermus thermophilus cytochrome ba ₃

   • C. Immoos
   • Michael G. Hill
   • Harry B. Gray

   ORIGINAL ARTICLE Pages: 529 - 531

8. X-ray structure of the cambialistic superoxide dismutase from Propionibacterium shermanii active with Fe or Mn

   • Marius Schmidt
   • Beate Meier
   • F. Parak

   ORIGINAL ARTICLE Pages: 532 - 541

9. Site-directed mutagenesis of a phenylalanine residue strictly conserved in cytochromes c ₃

   • Lígia M. Saraiva
   • Carlos A. Salgueiro
   • António V. Xavier

   ORIGINAL ARTICLE Pages: 542 - 550

10. Electron relaxation and solvent accessibility of the metal site in wild-type and mutated azurins as determined from nuclear magnetic relaxation dispersion experiments

    • Sandra J. Kroes
    • Jesús Salgado
    • G. W. Canters

    ORIGINAL ARTICLE Pages: 551 - 559

11. Role of the conserved histidines in the Zn module of the copper-activated transcription factors in yeast

    • Matthew C. Posewitz
    • John R. Simon
    • D. R. Winge

    ORIGINAL ARTICLE Pages: 560 - 566

12. Identification of catalytic residues involved in iron uptake by L-chain ferritins

    • R. R. Crichton
    • Adelina Herbas
    • Francine Roland

    ORIGINAL ARTICLE Pages: 567 - 574

13. Nitrogen fixation – what is biomi metic and theoretical chemistry telling us about substrate binding and activation at the iron-molybdenum cofactor of nitrogenase?

    • Roger Thorneley

    COMMENTARIES ON: Pages: 575 - 575

14. Nitrogenase: substrate binding and activation

    • R. N. F. Thorneley
    • D. J. Lowe

    COMMENTARY Pages: 576 - 580

15. Theoretical investigations of the mechanism of biological nitrogen fixation at the FeMo cluster site

    • I. Dance

    COMMENTARY Pages: 581 - 586

16. Elementary reactions, structure-function relationships, and the potential relevance of low molecular weight metal-sulfur ligand complexes to biological N₂ fixation

    • D. Sellmann
    • Jörg Sutter

    COMMENTARY Pages: 587 - 593

17. Functional analogs for the reduction of certain nitrogenase substrates. Are multiple sites within the Fe/Mo/S active center involved in the 6e^– reduction of N₂?

    • Dimitri Coucouvanis

    COMMENTARY Pages: 594 - 600

18. The Chatt cycle and the mechanism of enzymic reduction of molecular nitrogen

    • Christopher J. Pickett

    COMMENTARY Pages: 601 - 606