NMR study of the active site of resting state and cyanide-inhibited lignin peroxidase from Phanerochaete chrysosporium: Comparison with horseradish peroxidase

J. S. De Ropp, G. N. La Mar, H. Wariishi, M. H. Gold

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Abstract

One- and two-dimensional 1H NMR spectroscopy has been used to probe the active site of the high spin ferric resting state and the low sin, cyanide-inhibited derivative of isozyme H2 of the lignin peroxidase, LiP, from Phanerochaete chrysosporium strain BKM 1767. One-dimensional NMR revealed a resting state LiP that is five coordinate at 25 °C with an electronic structure similar to that of horseradish peroxidase, HRP. Differential paramagnetic relaxivity was used to identify the C(β)H signals of the axial His177. A combination of bond correlation spectroscopy and nuclear Overhauser effect spectroscopy of cyanide-inhibited LiP (LiP-CN) has allowed the assignment of all resolved heme resonances without recourse to isotope labeling, as well as those of the proximal His177 and the distal His48. The surprising effectiveness of the two dimensional NMR methods on such a large and paramagnetic protein indicates that such two dimensional experiments can be expected to have major impact on solution structure determination of diverse classes of heme peroxidases. The two dimensional NMR data of LiP-CN reveal a heme contact shift pattern that reflects a close similarity to that of HRP-CN, including the unusual in-plane trans and cis orientation of the 2- and 4-vinyls. The axial His177 also exhibits the same orientation relative to the heme as in HRP-CN. The proximal His177 contact shifted resonances of both the low spin LiP-CN and high spin LiP are shown to reflect significantly reduced hydrogen bond donation by, or imidazolate character for, the axial histidine in LiP relative to HRP, which may explain the higher redox potential of LiP. The signals are identified for a distal residue that originates from the protonated His48 with disposition relative to the heme similar to that found for the distal His42 in HRP-CN. In contrast, the absence of any resolved signals attributable to an Arg44 in LiP-CN suggest that this distal residue has an altered orientation relative to the heme compared with that of the conserved Arg38 in HRP-CN (Thanabal, V., de Ropp, J.S., and La Mar, G. N. (1987) J. Am. Chem. Soc. 109, 7516-7525).

Original languageEnglish
Pages (from-to)15001-15008
Number of pages8
JournalJournal of Biological Chemistry
Volume266
Issue number23
Publication statusPublished - Oct 2 1991
Externally publishedYes

Fingerprint

Phanerochaete
Cyanides
Horseradish Peroxidase
Heme
Catalytic Domain
Nuclear magnetic resonance
Spectrum Analysis
Spectroscopy
Isotope Labeling
Mars
Peroxidases
Histidine
Isotopes
Labeling
Nuclear magnetic resonance spectroscopy
Isoenzymes
Oxidation-Reduction
Electronic structure
lignin peroxidase
Hydrogen

All Science Journal Classification (ASJC) codes

  • Biochemistry
  • Molecular Biology
  • Cell Biology

Cite this

NMR study of the active site of resting state and cyanide-inhibited lignin peroxidase from Phanerochaete chrysosporium : Comparison with horseradish peroxidase. / De Ropp, J. S.; La Mar, G. N.; Wariishi, H.; Gold, M. H.

In: Journal of Biological Chemistry, Vol. 266, No. 23, 02.10.1991, p. 15001-15008.

Research output: Contribution to journalArticle

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abstract = "One- and two-dimensional 1H NMR spectroscopy has been used to probe the active site of the high spin ferric resting state and the low sin, cyanide-inhibited derivative of isozyme H2 of the lignin peroxidase, LiP, from Phanerochaete chrysosporium strain BKM 1767. One-dimensional NMR revealed a resting state LiP that is five coordinate at 25 °C with an electronic structure similar to that of horseradish peroxidase, HRP. Differential paramagnetic relaxivity was used to identify the C(β)H signals of the axial His177. A combination of bond correlation spectroscopy and nuclear Overhauser effect spectroscopy of cyanide-inhibited LiP (LiP-CN) has allowed the assignment of all resolved heme resonances without recourse to isotope labeling, as well as those of the proximal His177 and the distal His48. The surprising effectiveness of the two dimensional NMR methods on such a large and paramagnetic protein indicates that such two dimensional experiments can be expected to have major impact on solution structure determination of diverse classes of heme peroxidases. The two dimensional NMR data of LiP-CN reveal a heme contact shift pattern that reflects a close similarity to that of HRP-CN, including the unusual in-plane trans and cis orientation of the 2- and 4-vinyls. The axial His177 also exhibits the same orientation relative to the heme as in HRP-CN. The proximal His177 contact shifted resonances of both the low spin LiP-CN and high spin LiP are shown to reflect significantly reduced hydrogen bond donation by, or imidazolate character for, the axial histidine in LiP relative to HRP, which may explain the higher redox potential of LiP. The signals are identified for a distal residue that originates from the protonated His48 with disposition relative to the heme similar to that found for the distal His42 in HRP-CN. In contrast, the absence of any resolved signals attributable to an Arg44 in LiP-CN suggest that this distal residue has an altered orientation relative to the heme compared with that of the conserved Arg38 in HRP-CN (Thanabal, V., de Ropp, J.S., and La Mar, G. N. (1987) J. Am. Chem. Soc. 109, 7516-7525).",
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T1 - NMR study of the active site of resting state and cyanide-inhibited lignin peroxidase from Phanerochaete chrysosporium

T2 - Comparison with horseradish peroxidase

AU - De Ropp, J. S.

AU - La Mar, G. N.

AU - Wariishi, H.

AU - Gold, M. H.

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N2 - One- and two-dimensional 1H NMR spectroscopy has been used to probe the active site of the high spin ferric resting state and the low sin, cyanide-inhibited derivative of isozyme H2 of the lignin peroxidase, LiP, from Phanerochaete chrysosporium strain BKM 1767. One-dimensional NMR revealed a resting state LiP that is five coordinate at 25 °C with an electronic structure similar to that of horseradish peroxidase, HRP. Differential paramagnetic relaxivity was used to identify the C(β)H signals of the axial His177. A combination of bond correlation spectroscopy and nuclear Overhauser effect spectroscopy of cyanide-inhibited LiP (LiP-CN) has allowed the assignment of all resolved heme resonances without recourse to isotope labeling, as well as those of the proximal His177 and the distal His48. The surprising effectiveness of the two dimensional NMR methods on such a large and paramagnetic protein indicates that such two dimensional experiments can be expected to have major impact on solution structure determination of diverse classes of heme peroxidases. The two dimensional NMR data of LiP-CN reveal a heme contact shift pattern that reflects a close similarity to that of HRP-CN, including the unusual in-plane trans and cis orientation of the 2- and 4-vinyls. The axial His177 also exhibits the same orientation relative to the heme as in HRP-CN. The proximal His177 contact shifted resonances of both the low spin LiP-CN and high spin LiP are shown to reflect significantly reduced hydrogen bond donation by, or imidazolate character for, the axial histidine in LiP relative to HRP, which may explain the higher redox potential of LiP. The signals are identified for a distal residue that originates from the protonated His48 with disposition relative to the heme similar to that found for the distal His42 in HRP-CN. In contrast, the absence of any resolved signals attributable to an Arg44 in LiP-CN suggest that this distal residue has an altered orientation relative to the heme compared with that of the conserved Arg38 in HRP-CN (Thanabal, V., de Ropp, J.S., and La Mar, G. N. (1987) J. Am. Chem. Soc. 109, 7516-7525).

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