1. Weng, T. C.; Waldo, G. S.; Penner-Hahn, J. E. "A method for normalization of X-ray absorption spectra" Journal of Synchrotron Radiation 2005, 12, 506-510. Link.

2. Penner-Hahn, J. E.; Yocum, C. F. "The Photosynthesis "Oxygen Clock" Gets a New Number" Science 2005, 310, 982-983. Link.

3. Penner-Hahn, J. E. "Characterization of "spectroscopically quiet" metals in biology" Coord. Chem. Rev. 2005, 249, 161-177.

4. Magyar, J. S.; Weng, T. C.; Stern, C. M.; Dye, D. F.; Rous, B. W.; Payne, J. C.; Bridgewater, B. M.; Mijovilovich, A.; Parkin, G.; Zaleski, J. M.; Penner-Hahn, J. E.; Godwin, H. A. "Reexamination of lead(II) coordination preferences in sulfur-rich sites: Implications for a critical mechanism of lead poisoning" J. Am. Chem. Soc. 2005, 127, 9495-9505. Link.

5. Lansky, D. E.; Mandimutsira, B.; Ramdhanie, B.; Clausen, M.; Penner-Hahn, J.; Zvyagin, S. A.; Telser, J.; Krzystek, J.; Zhan, R. Q.; Ou, Z. P.; Kadish, K. M.; Zakharov, L.; Rheingold, A. L.; Goldberg, D. P. "Synthesis, characterization, and physicochernical properties of manganese(III) and manganese(V)-oxo corrolazines" Inorg. Chem. 2005, 44, 4485-4498. Link.

6. Zharov, I.; Weng, T. C.; Orendt, A. M.; Barich, D. H.; Penner-Hahn, J.; Grant, D. M.; Havlas, Z.; Michi, J. "Metal cation-methyl interactions in CB11Me12- salts of Me3Ge+, Me3Sn+, and Me3Pb+" J. Am. Chem. Soc. 2004, 126, 12033-12046. Link.

7. Wu, A. J.; Penner-Hahn, J. E.; Pecoraro, V. L. "Structural, spectroscopic, and reactivity models for the manganese catalases" Chem. Rev. 2004, 104, 903-938. Link.

8. Weng, T. C.; Hsieh, W. Y.; Uffelman, E. S.; Gordon-Wylie, S. W.; Collins, T. J.; Pecoraro, V. L.; Penner-Hahn, J. E. "XANES evidence against a manganyl species in the S-3 state of the oxygen-evolving complex" J. Am. Chem. Soc. 2004, 126, 8070-8071. Link.

9. Masip, L.; Pan, J. L.; Haldar, S.; Penner-Hahn, J. E.; DeLisa, M. P.; Georgiou, G.; Bardwell, J. C. A.; Collet, J. F. "An engineered pathway for the formation of protein disulfide bonds" Science 2004, 303, 1185-1189. Link.

10. Kuntzleman, T.; McCarrick, M.; Penner-Hahn, J.; Yocum, C. "Probing reactive sites within the Photosystem II manganese cluster: Evidence for separate populations of manganese that differ in redox potential" Phys. Chem. Chem. Phys. 2004, 6, 4897-4904. Link.

11. Hsieh, W. Y.; Campbell, K. A.; Gregor, W.; Britt, R. D.; Yoder, D. W.; Penner-Hahn, J. E.; Pecoraro, V. L. "The first spectroscopic model for the S-1 state multiline signal of the OEC" Biochim Biophys Acta 2004, 1655, 149-157.

12. Clot, E.; Eisenstein, O.; Weng, T. C.; Penner-Hahn, J.; Caulton, K. G. "Is the allylpalladium structure altered between solid and solutions?" J. Am. Chem. Soc. 2004, 126, 9079-9084. Link.

13. Tobin, D. A.; Pickett, J. S.; Hartman, H. L.; Fierke, C. A.; Penner-Hahn, J. E. "Structural characterization of the zinc site in protein farnesyltransferase" J. Am. Chem. Soc. 2003, 125, 9962-9969. Link.

14. Penner-Hahn, J. E. "Snapshots of transition states?" Nature Struct. Biol. 2003, 10, 75-77.

15. Peariso, K.; Huffman, D. L.; Penner-Hahn, J. E.; O'Halloran, T. V. "The PcoC copper resistance protein coordinates Cu(I) via novel S-methionine interactions" J. Am. Chem. Soc. 2003, 125, 342-343. Link.

16. McClure, C. P.; Rusche, K. M.; Peariso, K.; Jackman, J. E.; Fierke, C. A.; Penner-Hahn, J. E. "EXAFS studies of the zinc sites of UDP-(3-O-acyl)-N-acetylglucosamine deacetylase (LpxC)" J. Inorg. Biochem. 2003, 94, 78-85.

17. Chen, K.; Yuldasheva, S.; Penner-Hahn, J. E.; O'Halloran, T. V. "An atypical linear Cu(I)-S-2 center constitutes the high-affinity metal-sensing site in the CueR metalloregulatory protein" J. Am. Chem. Soc. 2003, 125, 12088-12089. Link.

18. Alexiou, M.; Dendrinou-Samara, C.; Karagianni, A.; Biswas, S.; Zaleski, C. M.; Kampf, J.; Yoder, D.; Penner-Hahn, J. E.; Pecoraro, V. L.; Kessissoglou, D. P. "Models for the lower S states of photosystem II: A trinuclear mixed-valent Mn-II/Mn-IV/Mn-II complex" Inorg. Chem. 2003, 42, 2185-2187. Link.

19. Penner-Hahn, J. E. "Zn catalyzed alkyl-transfer reactions: A new class of biological Zn sites" Indian Journal of Chemistry Section a-Inorganic Bio-Inorganic Physical Theoretical & Analytical Chemistry 2002, 41, 13-21.

20. Matzapetakis, M.; Farrer, B. T.; Weng, T. C.; Hemmingsen, L.; Penner-Hahn, J. E.; Pecoraro, V. L. "Comparison of the binding of cadmium(II), mercury(II), and arsenic(III) to the de novo designed peptides TRI L12C and TRI L16C" J. Am. Chem. Soc. 2002, 124, 8042-8054. Link.

21. Keren, N.; Kidd, M. J.; Penner-Hahn, J. E.; Pakrasi, H. B. "A light-dependent mechanism for massive accumulation of manganese in the photosynthetic bacterium Synechocystis sp PCC 6803" Biochemistry 2002, 41, 15085-15092. Link.

22. Busenlehner, L. S.; Weng, T. C.; Penner-Hahn, J. E.; Giedroc, D. P. "Elucidation of primary (alpha N-3) and vestigial (alpha(5)) heavy metal-binding sites in Staphylococcus aureus pI258 CadC: Evolutionary implications for metal ion selectivity of ArsR/SmtB metal sensor proteins" J. Mol. Biol. 2002, 319, 685-701.

23. Peariso, K.; Zhou, Z. H. S.; Smith, A. E.; Matthews, R. G.; Penner-Hahn, J. E. "Characterization of the zinc sites in cobalamin-independent and cobalamin-dependent methionine synthase using zinc and selenium X-ray absorption spectroscopy" Biochemistry 2001, 40, 987-993. Link.

24. Outten, C. E.; Tobin, D. A.; Penner-Hahn, J. E.; O'Halloran, T. V. "Characterization of the metal receptor sites in Escherichia coli Zur, an ultrasensitive zinc(II) metalloregulatory protein" Biochemistry 2001, 40, 10417-10423. Link.

25. Lin, Y. X.; Dotsch, V.; Wintner, T.; Peariso, K.; Myers, L. C.; Penner-Hahn, J. E.; Verdine, G. L.; Wagner, G. "Structural basis for the functional switch of the E-coli Ada protein" Biochemistry 2001, 40, 4261-4271. Link.

26. Kao, L. S.; Peacor, D. R.; Coveney, R. M.; Zhao, G. M.; Dungey, K. E.; Curtis, M. D.; Penner-Hahn, J. E. "A C/MoS2 mixed-layer phase (MoSC) occurring in metalliferous black shales from southern China, and new data on jordisite" Amer. Mineral. 2001, 86, 852-861.

27. Gencic, S.; LeClerc, G. M.; Gorlatova, N.; Peariso, K.; Penner-Hahn, J. E.; Grahame, D. A. "Zinc-thiolate intermediate in catalysis of methyl group transfer in Methanosarcina barkeri" Biochemistry 2001, 40, 13068-13078. Link.

28. Coppens, P.; Penner-Hahn, J. "Introduction: X-rays in chemistry" Chem. Rev. 2001, 101, 1567-1568. Link.

29. Zamble, D. B.; McClure, C. P.; Penner-Hahn, J. E.; Walsh, C. T. "The McbB component of microcin B17 synthetase is a zinc metalloprotein" Biochemistry 2000, 39, 16190-16199.

30. Yoder, D. W.; Hwang, J.; Penner-Hahn, J. E. "Manganese catalases" in Metal Ions in Biological Systems, Vol 37; MARCEL DEKKER: New York, 2000; Vol. 37, pp 527-557.

31. Ojha, S.; Hwang, J.; Kabil, O.; Penner-Hahn, J. E.; Banerjee, R. "Characterization of the heme in human cystathionine beta-synthase by X-ray absorption and electron paramagnetic resonance spectroscopies" Biochemistry 2000, 39, 10542-10547.

32. Mann, S. E.; Ringo, M. C.; Shea-McCarthy, G.; Penner-Hahn, J.; Evans, C. E. "Element-specific detection in capillary electrophoresis using X-ray fluorescence spectroscopy" Anal. Chem. 2000, 72, 1754-1758.

33. Hwang, J.; Krebs, C.; Huynh, B. H.; Edmondson, D. E.; Theil, E. C.; Penner-Hahn, J. E. "A short Fe-Fe distance in peroxodiferric ferritin: Control of Fe substrate versus cofactor decay?" Science 2000, 287, 122-125. Link.

34. Foster, M. W.; Mansy, S. S.; Hwang, J.; Penner-Hahn, J. E.; Surerus, K. K.; Cowan, J. A. "A mutant human IscU protein contains a stable 2Fe-2S (2+) center of possible functional significance" J. Am. Chem. Soc. 2000, 122, 6805-6806.

35. Farrer, B. T.; McClure, C. P.; Penner-Hahn, J. E.; Pecoraro, V. L. "Arsenic(III)-cysteine interactions stabilize three-helix bundles in aqueous solution" Inorg. Chem. 2000, 39, 5422-5423.

36. Zhou, Z. H. S.; Peariso, K.; Penner-Hahn, J. E.; Matthews, R. G. "Identification of the zinc ligands in cobalamin-independent methionine synthase (MetE) from Escherichia coli" Biochemistry 1999, 38, 15915-15926.

37. Tierney, D. L.; Gassner, G. T.; Luchinat, C.; Bertini, I.; Ballou, D. P.; Penner-Hahn, J. E. "NMR characterization of substrate binding in the phthalate dioxygenase system" Biochemistry 1999, 38, 11051-11061.

38. Simon, G.; Huang, H.; Penner-Hahn, J. E.; Kesler, S. E.; Kao, L. S. "Oxidation state of gold and arsenic in gold-bearing arsenian pyrite" Amer. Mineral. 1999, 84, 1071-1079.

39. Ringo, M. C.; Huhta, M. S.; Shea-McCarthy, G.; Penner-Hahn, J. E.; Evans, C. E. "On-line X-ray fluorescence detection for capillary electrophoresis separations" Nuclear Instruments & Methods in Physics Research Section B-Beam Interactions with Materials and Atoms 1999, 149, 177-181.

40. Penner-Hahn, J. E. "X-ray absorption spectroscopy in coordination chemistry" Coord. Chem. Rev. 1999, 192, 1101-1123.

41. Baldwin, M. J.; Law, N. A.; Stemmler, T. L.; Kampf, J. W.; Penner-Hahn, J. E.; Pecoraro, V. L. "Reactivity of {Mn-IV(salpn)}(2)(mu-O,mu-OCH3) (+) and {Mn-IV(salpn)}(2)(mu-O,mu-OH) (+): Effects of proton lability and hydrogen bonding" Inorg. Chem. 1999, 38, 4801-4809.

42. Penner-Hahn, J. E. "Structural characterization of the Mn site in the photosynthetic oxygen-evolving complex" in Metal Sites in Proteins and Models; SPRINGER-VERLAG BERLIN: Berlin 33, 1998; Vol. 90, pp 1-36.

43. Peariso, K.; Goulding, C. W.; Huang, S.; Matthews, R. G.; Penner-Hahn, J. E. "Characterization of the zinc binding site in methionine synthase enzymes of Escherichia coli: The role of zinc in the methylation of homocysteine" J. Am. Chem. Soc. 1998, 120, 8410-8416.

44. Huang, H.; Liang, C. H.; Penner-Hahn, J. E. "X-ray absorption spectroscopy of dimethylcuprates: Evidence for solvent-dependent aggregation" Angew Chem. Intl. Ed. Eng. 1998, 37, 1564-1566.

45. Dungey, K. E.; Curtis, M. D.; Penner-Hahn, J. E. "Behavior of MoS2 intercalation compounds in HDS catalysis" J. Catal. 1998, 175, 129-134.

46. Dungey, K. E.; Curtis, M. D.; Penner-Hahn, J. E. "Structural characterization and thermal stability of MoS2 intercalation compounds" Chemistry of Materials 1998, 10, 2152-2161.

47. Daly, K. A.; Penner-Hahn, J. E. "Extracting dynamic information from EXAFS: Simultaneous analysis of multiple temperature-dependent data" Journal of Synchrotron Radiation 1998, 5, 1383-1389.

48. Clark-Baldwin, K.; Johnson, A. R.; Chen, Y. W.; Dekker, E. E.; Penner-Hahn, J. E. "Structural characterization of the zinc site in Escherichia coli L-threonine dehydrogenase using extended X-ray absorption fine structure spectroscopy" Inorg. Chim. Acta 1998, 276, 215-221.

49. Clark-Baldwin, K.; Tierney, D. L.; Govindaswamy, N.; Gruff, E. S.; Kim, C.; Berg, J.; Koch, S. A.; Penner-Hahn, J. E. "The limitations of X-ray absorption spectroscopy for determining the structure of zinc sites in proteins. When is a tetrathiolate not a tetrathiolate?" J. Am. Chem. Soc. 1998, 120, 8401-8409.

50. Brunold, T. C.; Gamelin, D. R.; Stemmler, T. L.; Mandal, S. K.; Armstrong, W. H.; Penner-Hahn, J. E.; Solomon, E. I. "Spectroscopic studies of oxidized manganese catalase and mu-oxo-bridged dimanganese(III) model complexes: Electronic structure of the active site and its relation to catalysis" J. Am. Chem. Soc. 1998, 120, 8724-8738.

51. Bergmann, U.; Grush, M. M.; Horne, C. R.; DeMarois, P.; Penner-Hahn, J. E.; Yocum, C. F.; Wright, D. W.; Dube, C. E.; Armstrong, W. H.; Christou, G.; Eppley, H. J.; Cramer, S. P. "Characterization of the Mn oxidation states in photosystem II by K beta X-ray fluorescence spectroscopy" Journal of Physical Chemistry B 1998, 102, 8350-8352. 000076737100031.

52. Stemmler, T. L.; Sossong, T. M.; Goldstein, J. I.; Ash, D. E.; Elgren, T. E.; Krutz, D. M.; Penner-Hahn, J. E. "EXAFS comparison of the dimanganese core structures of manganese catalase, arginase, and manganese-substituted ribonucleotide reductase and hemerythrin" Biochemistry 1997, 36, 9847-9858. A1997XQ76000024.

53. Stemmler, T. L.; Sturgeon, B. E.; Randall, D. W.; Britt, R. D.; Penner-Hahn, J. E. "Spectroscopic characterization of inhibitor interactions with the Mn(III)/Mn(IV) core in Lactobacillus plantarum manganese catalase" J. Am. Chem. Soc. 1997, 119, 9215-9225. A1997XY93800017.

54. Pufahl, R. A.; Singer, C. P.; Peariso, K. L.; Lin, S. J.; Schmidt, P. J.; Fahrni, C. J.; Culotta, V. C.; Penner-Hahn, J. E.; O'Halloran, T. V. "Metal ion chaperone function of the soluble Cu(I) receptor Atx1" Science 1997, 278, 853-856. http://dx.doi.org/10.1126/science.278.5339.853.

55. Hang, H.; Penner-Hahn, J. E. "Structural characterization of organocuprate reagents prepared from alkyl aluminum and copper(I) cyanide" Journal De Physique Iv 1997, 7, 645-646. A1997XQ95100208.

56. Dieckmann, G. R.; McRorie, D. K.; Tierney, D. L.; Utschig, L. M.; Singer, C. P.; O'Halloran, T. V.; Penner-Hahn, J. E.; DeGrado, W. F.; Pecoraro, V. L. "De novo design of mercury-binding two- and three-helical bundles" J. Am. Chem. Soc. 1997, 119, 6195-6196. A1997XJ17600026.

57. Daly, K. A.; Penner-Hahn, J. E. "Improved EXAFS analysis program for alternative pair distribution functions" Journal De Physique Iv 1997, 7, 253-254. A1997XQ95100067.

58. Tsang, H. T.; Batie, C. J.; Ballou, D. P.; Penner-Hahn, J. E. "Structural characterization of the mononuclear iron site in Pseudomonas cepacia phthalate DB01 dioxygenase using X-ray absorption spectroscopy" J. Biol. Inorg. Chem. 1996, 1, 24-33. A1996VV69900004.

59. Riggs-Gelasco, P. J.; Mei, R.; Ghanotakis, D. F.; Yocum, C. F.; Penner-Hahn, J. E. "X-ray absorption spectroscopy of calcium-substituted derivatives of the oxygen-evolving complex of phostosystem II" J. Am. Chem. Soc. 1996, 118, 2400-2410. A1996UA02900012.

60. Riggs-Gelasco, P. J.; Mei, R.; Yocum, C. F.; Penner-Hahn, J. E. "Reduced derivatives of the Mn cluster in the oxygen-evolving complex of photosystem II: An EXAFS study" J. Am. Chem. Soc. 1996, 118, 2387-2399. A1996UA02900011.

61. Huang, H.; Alvarez, K.; Lui, Q.; Barnhart, T. M.; Snyder, J. P.; Penner-Hahn, J. E. "Infrared spectroscopic characterization of cyanocuprates" J. Am. Chem. Soc. 1996, 118, 8808-8816. A1996VH24100006.

62. Grush, M. M.; Chen, J.; Stemmler, T. L.; George, S. J.; Ralston, C. Y.; Stibrany, R. T.; Gelasco, A.; Christou, G.; Gorun, S. M.; Penner-Hahn, J. E.; Cramer, S. P. "Manganese L-edge X-ray absorption spectroscopy of manganese catalase from Lactobacillus plantarum and mixed valence manganese complexes" J. Am. Chem. Soc. 1996, 118, 65-69. A1996TQ16100009.

63. Gonzalez, J. C.; Peariso, K.; Penner-Hahn, J. E.; Matthews, R. G. "Cobalamin-independent methionine synthase from Escherichia coli: A zinc metalloenzyme" Biochemistry 1996, 35, 12228-12234. A1996VJ27000002.

64. Garcia, G. A.; Tierney, D. L.; Chong, S. R.; Clark, K.; Penner-Hahn, J. E. "X-ray absorption spectroscopy of the zinc site in tRNA-guanine transglycosylase from Escherichia coli" Biochemistry 1996, 35, 3133-3139. A1996TZ11800040.

65. Caudle, M. T.; Riggs-Gelasco, P.; Gelasco, A. K.; Penner-Hahn, J. E.; Pecoraro, V. L. "Mechanism for the homolytic cleavage of alkyl hydroperoxides by the manganese(III) dimer Mn-2(III)(2-OHsalpn)(2)" Inorg. Chem. 1996, 35, 3577-3584. A1996UP86700023.

66. Witkowski, R. T.; Hattman, S.; Newman, L.; Clark, K.; Tierney, D. L.; Penner-Hahn, J.; McLendon, G. "The Zinc Coordination Site of the Bacteriophage-Mu Translational Activator Protein, Com" J. Mol. Biol. 1995, 247, 753-764. A1995QQ85600022.

67. Waldo, G. S.; Penner-Hahn, J. E. "Mechanism of Manganese Catalase Peroxide Disproportionation - Determination of Manganese Oxidation-States During Turnover" Biochemistry 1995, 34, 1507-1512. A1995QF83700006.

68. Tierney, D. L.; Fee, J. A.; Ludwig, M. L.; Penner-Hahn, J. E. "X-Ray-Absorption Spectroscopy of the Iron Site in Escherichia-Coli Fe(Iii) Superoxide-Dismutase" Biochemistry 1995, 34, 1661-1668. A1995QF83700022.

69. Stemmler, T. L.; Barnhart, T. M.; Penner-Hahn, J. E.; Tucker, C. E.; Knochel, P.; Bohme, M.; Frenking, G. "Structural characterization of organocuprate reagents. EXAFS spectroscopy and ab initio calculations" J. Am. Chem. Soc. 1995, 117, 12489-12497. A1995TL73300013.

70. Riggs-Gelasco, P. J.; Stemmler, T. L.; Penner-Hahn, J. E. "Xafs of Dinuclear Metal Sites in Proteins and Model Compounds" Coord. Chem. Rev. 1995, 144, 245-286. A1995TF86100007.

71. Riggs-Gelasco, P. J.; Mei, R.; Penner-Hahn, J. E. "Structural characterization of manganese redox enzymes - Results from X-ray absorption spectroscopy" in Mechanistic Bioinorganic Chemistry; AMER CHEMICAL SOC: Washington, 1995; Vol. 246, pp 219-248. A1995BE37U00008.

72. Barnhart, T. M.; Penner-Hahn, J. E. "Exafs Characterization of Methyl and Phenyl Cuprates in Solution" Physica B 1995, 209, 709-710. A1995QP96100282.

73. Tesmer, J. J. G.; Stemmler, T. L.; Penner-Hahn, J. E.; Davisson, V. J.; Smith, J. L. "Preliminary-X-Ray Analysis of Escherichia-Coli Gmp Synthetase - Determination of Anomalous Scattering Factors for a Cysteinyl Mercury Derivative" Proteins-Structure Function and Genetics 1994, 18, 394-403. A1994ND28600009.

74. Li, P.; Chen, I. W.; Penner-Hahn, J. E. "Effect of Dopants on Zirconia Stabilization - an X-Ray-Absorption Study .1. Trivalent Dopants" J. Amer. Ceram. Soc. 1994, 77, 118-128. A1994MW12100014.

75. Li, P.; Chen, I. W.; Penner-Hahn, J. E. "Effect of Dopants on Zirconia Stabilization - an X-Ray-Absorption Study .3. Charge-Compensating Dopants" J. Amer. Ceram. Soc. 1994, 77, 1289-1295. A1994NM65500021.

76. Landro, J. A.; Schmidt, E.; Schimmel, P.; Tierney, D. L.; Penner-Hahn, J. E. "Thiol Ligation of 2 Zinc Atoms to a Class-I Transfer-Rna Synthetase - Evidence for Unshared Thiols and Role in Amino-Acid Binding and Utilization" Biochemistry 1994, 33, 14213-14220. A1994PU76000033.

77. Ikegami, N.; Mitchell, W.; Penner-Hahn, J. "Pharmaceutical Prices, Quantities and Innovation - Comparing Japan with the United-States" Pharmacoeconomics 1994, 6, 424-433. A1994PR99000004.

78. Haddy, A.; Waldo, G. S.; Sands, R. H.; Penner-Hahn, J. E. "Simulation of Multifrequency EPR-Spectra from Mn(Iii)/Mn(Iv) Catalase of Lactobacillus-Plantarum Using a New Approach Based on Perturbation-Theory" Inorg. Chem. 1994, 33, 2677-2682. A1994NR65600033.

79. Gamelin, D. R.; Kirk, M. L.; Stemmler, T. L.; Pal, S.; Armstrong, W. H.; Penner-Hahn, J. E.; Solomon, E. I. "Electronic-Structure and Spectroscopy of Manganese Catalase and Di-Mu-Oxo Mn(Iii)Mn(Iv) Model Complexes" J. Am. Chem. Soc. 1994, 116, 2392-2399. A1994NE02600019.

80. Clark, K.; Penner-Hahn, J. E.; Whittaker, M.; Whittaker, J. W. "Structural Characterization of the Copper Site in Galactose-Oxidase Using X-Ray-Absorption Spectroscopy" Biochemistry 1994, 33, 12553-12557. A1994PN45300004.

81. Baldwin, M. J.; Stemmler, T. L.; Riggs-Gelasco, P. J.; Kirk, M. L.; Penner-Hahn, J. E.; Pecoraro, V. L. "Structural and Magnetic Effects of Successive Protonations of Oxo Bridges in High-Valent Manganese Dimers" J. Am. Chem. Soc. 1994, 116, 11349-11356. A1994PX38600014.

82. Shadle, S. E.; Penner-Hahn, J. E.; Schugar, H. J.; Hedman, B.; Hodgson, K. O.; Solomon, E. I. "X-Ray Absorption Spectroscopic Studies of the Blue Copper Site - Metal and Ligand K-Edge Studies to Probe the Origin of the EPR Hyperfine Splitting in Plastocyanin" J. Am. Chem. Soc. 1993, 115, 767-776. A1993KJ68900057.

83. Riggs, P. J.; Mei, R.; Yocum, C. F.; Penner-Hahn, J. E. "Characterization of the Mn Site in the Photosynthetic Oxygen-Evolving Complex - the Effect of Hydroxylamine and Hydroquinone on the X-Ray-Absorption Spectra" Japanese Journal of Applied Physics Part 1-Regular Papers Short Notes & Review Papers 1993, 32, 527-529. A1993LT05000160.

84. Persson, I.; Penner-Hahn, J. E.; Hodgson, K. O. "An Exafs Spectroscopic Study of Solvates of Copper(I) and Copper(Ii) in Acetonitrile, Dimethyl-Sulfoxide, Pyridine, and Tetrahydrothiophene Solutions and a Large-Angle X-Ray-Scattering Study of the Copper(Ii) Acetonitrile Solvate in Solution" Inorg. Chem. 1993, 32, 2497-2501. A1993LE48900049.

85. Li, P.; Chen, I. W.; Penner-Hahn, J. E. "X-Ray-Absorption Studies of Zirconia Polymorphs .3. Static Distortion and Thermal Distortion" Phys. Rev. B 1993, 48, 10082-10089. A1993MB64800013.

86. Li, P.; Chen, I. W.; Penner-Hahn, J. E. "X-Ray-Absorption Studies of Zirconia Polymorphs .2. Effect of Y2o3 Dopant on Zro2 Structure" Phys. Rev. B 1993, 48, 10074-10081. A1993MB64800012.

87. Li, P.; Chen, I. W.; Penner-Hahn, J. E. "X-Ray-Absorption Studies of Zirconia Polymorphs .1. Characteristic Local Structures" Phys. Rev. B 1993, 48, 10063-10073. A1993MB64800011.

88. Clark, K.; Utschig, L.; O'Halloran, T. V.; Penner-Hahn, J. E. "Structural Characterization of the Binding-Site in the Merr Metalloregulatory Protein" Japanese Journal of Applied Physics Part 1-Regular Papers Short Notes & Review Papers 1993, 32, 536-537. A1993LT05000163.

89. Allen, P. G.; Conradson, S. D.; Penner-Hahn, J. E. "A 4-Point Crystal Bender for Dispersive-X-Ray Absorption-Spectroscopy" J. Appl. Crystallog. 1993, 26, 172-179. A1993KY85100004.

90. Waldo, G. S.; Mullins, O. C.; Penner-Hahn, J. E.; Cramer, S. P. "Determination of the Chemical Environment of Sulfur in Petroleum Asphaltenes by X-Ray Absorption-Spectroscopy" Fuel 1992, 71, 53-57. A1992GU36600008.

91. Larson, E. J.; Riggs, P. J.; Penner-Hahn, J. E.; Pecoraro, V. L. "Protonation of (Mniv(Saltn)(Mu-2-O))2 Results in Significant Modification of Structure and Catalase-Like Reactivity" J. Chem. Soc., Chem. Commun. 1992, 102-103. A1992HB78700013.

92. Waldo, G. S.; Carlson, R. M. K.; Moldowan, J. M.; Peters, K. E.; Penner-Hahn, J. E. "Sulfur Speciation in Heavy Petroleums - Information from X-Ray Absorption near-Edge Structure" Geochim Cosmochem Acta 1991, 55, 801-814. A1991FD75200014.

93. Waldo, G. S.; Fronko, R. M.; Penner-Hahn, J. E. "Inactivation and Reactivation of Manganese Catalase - Oxidation-State Assignments Using X-Ray Absorption-Spectroscopy" Biochemistry 1991, 30, 10486-10490. A1991GM61300017.

94. Li, P.; Chen, I. W.; Penner-Hahn, J. E.; Tien, T. Y. "X-Ray Absorption Studies of Ceria with Trivalent Dopants" J. Amer. Ceram. Soc. 1991, 74, 958-967. A1991FL76200009.

95. Yang, C. Y.; Penner-Hahn, J. E.; Stefan, P. M. "Nsls X-19a Beamline Performance for X-Ray Absorption-Measurements" Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment 1990, 291, 157-161. A1990DL89700030.

96. Yang, C. Y.; Moodenbaugh, A. R.; Wang, Y. L.; Xu, Y. W.; Heald, S. M.; Welch, D. O.; Suenaga, M.; Fischer, D. A.; Penner-Hahn, J. E. "X-Ray Absorption near-Edge Studies of Substitution for Cu in Yba2(Cu1-Xmx)3o7-Delta(M=Fe, Co, Ni, and Zn)" Phys. Rev. B 1990, 42, 2231-2241. A1990DT06400042.

97. Penner-Hahn, J. E.; Fronko, R. M.; Pecoraro, V. L.; Yocum, C. F.; Betts, S. D.; Bowlby, N. R. "Structural Characterization of the Manganese Sites in the Photosynthetic Oxygen-Evolving Complex Using X-Ray Absorption-Spectroscopy" J. Am. Chem. Soc. 1990, 112, 2549-2557. A1990CW36500011.

98. Kettler, R. M.; Waldo, G. S.; Penner-Hahn, J. E.; Meyers, P. A.; Kesler, S. E. "Sulfidation of Organic-Matter Associated with Gold Mineralization, Pueblo-Viejo, Dominican-Republic" Appl. Geochem. 1990, 5, 237-248. A1990CX07000022.

99. Wang, S. K.; Waldo, G. S.; Penner-Hahn, J. E. "Polarized Xanes of Co(Iii)(Nh3)6 Molecular-Crystals" Physica B 1989, 158, 253-254. A1989AE26500099.

100. Wang, S.; Waldo, G. S.; Fronko, R.; Penner-Hahn, J. E. "Polarized Xanes of Iron Porphyrins" Physica B 1989, 158, 119-120. A1989AE26500044.

101. Tsang, H. T.; Penner-Hahn, J. E.; Batie, C. J.; Ballou, D. P. "Xas Investigation of the Fe Sites in Phthalate Dioxygenase" Physica B 1989, 158, 115-116. A1989AE26500042.

102. Tsang, H. T.; Batie, C. J.; Ballou, D. P.; Penner-Hahn, J. E. "X-Ray Absorption-Spectroscopy of the 2fe-2s Rieske Cluster in Pseudomonas-Cepacia Phthalate Dioxygenase - Determination of Core Dimensions and Iron Ligation" Biochemistry 1989, 28, 7233-7240. A1989AQ25000015.

103. Sheinson, R. S.; Penner-Hahn, J. E.; Indritz, D. "The Physical and Chemical Action of Fire Suppressants" Fire Safety Journal 1989, 15, 437-450. A1989DG80400002.

104. Penner-Hahn, J. E.; Murata, M.; Hodgson, K. O.; Freeman, H. C. "Low-Temperature X-Ray Absorption-Spectroscopy of Plastocyanin - Evidence for Copper-Site Photoreduction at Cryogenic Temperatures" Inorg. Chem. 1989, 28, 1826-1832. A1989U649300015.

105. Penner-Hahn, J. E.; Tsang, H. T.; O'Halloran, T. V.; Wright, J. "Xas of the Merr Metalloregulatory Protein" Physica B 1989, 158, 117-118. A1989AE26500043.

106. Penner-Hahn, J. E.; Fronko, R. M.; Pecoraro, V. L.; Yocum, C. F.; Bowlby, N. R. "Xas of Mn in the Photosynthetic Oxygen Evolving Complex" Physica B 1989, 158, 107-109. A1989AE26500039.

107. Klemens, A. S.; McMillin, D. R.; Tsang, H. T.; Penner-Hahn, J. E. "Structural Characterization of Mercury-Substituted Copper Proteins - Results from X-Ray Absorption-Spectroscopy" J. Am. Chem. Soc. 1989, 111, 6398-6402. A1989AK07700062.

108. Ahrland, S.; Nilsson, K.; Persson, I.; Yuchi, A.; Penner-Hahn, J. E. "Formation of Gold(I) Halide and Thiocyanate Complexes in Pyridine and Acetonitrile and the Structures of Gold(I) Solvates in These Solvents - a Thermodynamic and Exafs Spectroscopic Study" Inorg. Chem. 1989, 28, 1833-1838. A1989U649300016.

109. Penner-Hahn, J. E. "X-Ray Absorption-Spectroscopy for Characterizing Metal-Clusters in Proteins - Possibilities and Limitations" ACS Symposium Series 1988, 372, 28-48. A1988P761800002.

110. Curtis, M. D.; Penner-Hahn, J. E.; Schwank, J.; Baralt, O.; McCabe, D. J.; Thompson, L.; Waldo, G. "Syngas and Hds Catalysts Derived from Sulfido Bimetallic Clusters" Polyhedron 1988, 7, 2411-2420. A1988R204500021.

111. Kau, L. S.; Spirasolomon, D. J.; Penner-Hahn, J. E.; Hodgson, K. O.; Solomon, E. I. "X-Ray Absorption-Edge Determination of the Oxidation-State and Coordination-Number of Copper - Application to the Type-3 Site in Rhus-Vernicifera Laccase and Its Reaction with Oxygen" J. Am. Chem. Soc. 1987, 109, 6433-6442. A1987K557100032.

112. Warburton, W. K.; Iwanczyk, J. S.; Dabrowski, A. J.; Hedman, B.; Penner-Hahn, J. E.; Roe, A. L.; Hodgson, K. O.; Beyerle, A. "Development of Mercuric Iodide Detectors for Xas and Xrd Measurements" Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment 1986, 246, 558-560. A1986C799900121.

113. Penner-Hahn, J. E.; Benfatto, M.; Hedman, B.; Takahashi, T.; Doniach, S.; Groves, J. T.; Hodgson, K. O. "Polarized X-Ray Absorption near-Edge Structure of Highly Oxidized Chromium Porphyrins" Inorg. Chem. 1986, 25, 2255-2259. A1986C875900032.

114. Penner-Hahn, J. E.; Eble, K. S.; McMurry, T. J.; Renner, M.; Balch, A. L.; Groves, J. T.; Dawson, J. H.; Hodgson, K. O. "Structural Characterization of Horseradish-Peroxidase Using Exafs Spectroscopy - Evidence for Fe=O Ligation in Compound-I and Compound-Ii" J. Am. Chem. Soc. 1986, 108, 7819-7825. A1986F009000054.

115. Hedman, B.; Frank, P.; Penner-Hahn, J. E.; Roe, A. L.; Hodgson, K. O.; Carlson, R. M. K.; Brown, G.; Cerino, J.; Hettel, R.; Troxel, T.; Winick, H.; Yang, J. "Sulfur K-Edge X-Ray Absorption Studies Using the 54-Pole Wiggler at Ssrl in Undulator Mode" Nuclear Instruments & Methods in Physics Research Section a-Accelerators Spectrometers Detectors and Associated Equipment 1986, 246, 797-800. A1986C799900165.

116. Stephens, P. J.; Morgan, T. V.; Devlin, F.; Penner-Hahn, J. E.; Hodgson, K. O.; Scott, R. A.; Stout, C. D.; Burgess, B. K. "4fe-4s Cluster-Depleted Azotobacter-Vinelandii Ferredoxin-I - a New 3fe Iron-Sulfur Protein" Proc. Natl. Acad. Sci. USA 1985, 82, 5661-5665. A1985AQM9400019.

117. Smith, T. A.; Penner-Hahn, J. E.; Berding, M. A.; Doniach, S.; Hodgson, K. O. "Polarized X-Ray Absorption-Edge Spectroscopy of Single-Crystal Copper(Ii) Complexes" J. Am. Chem. Soc. 1985, 107, 5945-5955. A1985ASL1300020.

118. Penner-Hahn, J. E.; Hedman, B.; Hodgson, K. O.; Spira, D. J.; Solomon, E. I. "On the Spectral Features Associated with Peroxide Reactivity of the Coupled Binuclear Copper Active-Site in Type-2 Depleted and Native Rhus Laccase" Biochem. Biophys. Res. Commun. 1984, 119, 567-574. A1984SK06000020.

119. Wishart, J. F.; Ceccarelli, C.; Lintvedt, R. L.; Berg, J. M.; Foley, D. P.; Frey, T.; Hahn, J. E.; Hodgson, K. O.; Weis, R. "Synthesis, Structure, and Magnetism of a New Type of Pi-Molecular Complex Containing Binuclear Copper(Ii) Complexes and Benzene - Bis 2,2-Dimethyl-7-(Phenylimino)-3,5,7-Octanetrionato Dicopper(Ii)-Benze Ne and Bis 2,2-Dimethyl-7-((4-Nitrophenyl)Imino)-3,5,7-Octanetrionato Dicopper( Ii)-Bis(Benzene)E" Inorg. Chem. 1983, 22, 1667-1671. A1983QR75500022.

120. Hahn, J. E.; Hodgson, K. O. "Polarized X-Ray Absorption-Spectroscopy" ACS Symposium Series 1983, 211, 431-444. A1983QE48300030.

121. Hahn, J. E.; Co, M. S.; Spira, D. J.; Hodgson, K. O.; Solomon, E. I. "Quantitative Cu(I) Determination Using X-Ray Absorption-Edge Spectroscopy - Oxidation of the Reduced Binuclear Copper Site in Type-2 Depleted Rhus Laccase" Biochem. Biophys. Res. Commun. 1983, 112, 737-745. A1983QN34500056.

122. Hahn, J. E. "Transition-Metal Complexes Containing Bridging Alkylidene Ligands" Prog. Inorg. Chem 1983, 31, 205-264. A1983RY63700003.

123. Beinert, H.; Emptage, M. H.; Dreyer, J. L.; Scott, R. A.; Hahn, J. E.; Hodgson, K. O.; Thomson, A. J. "Iron-Sulfur Stoichiometry and Structure of Iron-Sulfur Clusters in 3-Iron Proteins - Evidence for 3fe-4s Clusters" Proc. Natl. Acad. Sci. USA 1983, 80, 393-396. A1983PZ62700016.

124. Scott, R. A.; Hahn, J. E.; Doniach, S.; Freeman, H. C.; Hodgson, K. O. "Polarized X-Ray Absorption-Spectra of Oriented Plastocyanin Single-Crystals - Investigation of Methionine Copper Coordination" J. Am. Chem. Soc. 1982, 104, 5364-5369. A1982PJ91100020.

125. Perutz, M. F.; Hasnain, S. S.; Duke, P. J.; Sessler, J. L.; Hahn, J. E. "Stereochemistry of Iron in Deoxyhemoglobin" Nature 1982, 295, 535-538. A1982NA87700044.

126. Perutz, M. F.; Hasnain, S. S.; Duke, P. J.; Sessler, J. L.; Hahn, J. E. "Stereochemistry of Iron in Deoxyhemoglobin" Ultramicroscopy 1982, 9, 31-36. A1982PC91600006.

127. Hahn, J. E.; Scott, R. A.; Hodgson, K. O.; Doniach, S.; Desjardins, S. R.; Solomon, E. I. "Observation of an Electric Quadrupole Transition in the X-Ray Absorption-Spectrum of a Cu(Ii) Complex" Chem. Phys. Lett. 1982, 88, 595-598. A1982NV69600016.

128. Hahn, J. E.; Hodgson, K. O.; Andersson, L. A.; Dawson, J. H. "Endogenous Cysteine Ligation in Ferric and Ferrous Cytochrome-P-450 Direct Evidence from X-Ray Absorption-Spectroscopy" J. Biol. Chem. 1982, 257, 934-941. A1982PH18200066.

129. Chen, S.; Hahn, J. E.; Rice, C. E.; Robinson, W. R. "The Effects of Titanium or Chromium Doping on the Crystal-Structure of V2o3" J. Solid State Chem. 1982, 44, 192-200. A1982PM26500008.

130. Hahn, J. E.; Nimry, T.; Robinson, W. R.; Salmon, D. J.; Walton, R. A. "Crystal and Molecular-Structure of Complex 1,2-Bis(Diphenylphosphino)Ethane (Diethylphenylphosphine)Tri-Isothiocya Natorhenium(Iii) and Electrochemistry of Isothiocyanato-Derivatives of Rhenium(Iii) and Rhenium(Iv)" J. Chem. Soc.-Dalton Trans. 1978, 1232-1236. A1978FS76300004.