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Basak P, Cabelli DE, Chivers PT, Farquhar ER, Maroney MJ. In vitro maturation of NiSOD reveals a role for cytoplasmic histidine in processing and metalation. Metallomics 2023; 15:mfad054. [PMID: 37723610 PMCID: PMC10628968 DOI: 10.1093/mtomcs/mfad054] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/13/2023] [Accepted: 09/16/2023] [Indexed: 09/20/2023]
Abstract
The importance of cellular low molecular weight ligands in metalloenzyme maturation is largely unexplored. Maturation of NiSOD requires post-translational N-terminal processing of the proenzyme, SodN, by its cognate protease, SodX. Here we provide evidence for the participation of L-histidine in the protease-dependent maturation of nickel-dependent superoxide dismutase (NiSOD) from Streptomyces coelicolor. In vitro studies using purified proteins cloned from S. coelicolor and overexpressed in E. coli support a model where a ternary complex formed between the substrate (SodN), the protease (SodX) and L-Histidine creates a novel Ni-binding site that is capable of the N-terminal processing of SodN and specifically incorporates Ni into the apo-NiSOD product. Thus, L-Histidine serves many of the functions associated with a metallochaperone or, conversely, eliminates the need for a metallochaperone in NiSOD maturation.
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Affiliation(s)
- Priyanka Basak
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA
| | - Diane E Cabelli
- Department of Chemistry, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Peter T Chivers
- Departments of Biosciences and Chemistry, Durham University, Durham, DH1 3LE, UK
| | - Erik R Farquhar
- National Synchrotron Light Source-II, Brookhaven National Laboratory, Upton, NY 11973, USA
| | - Michael J Maroney
- Department of Chemistry, University of Massachusetts, Amherst, MA 01003, USA
- Program in Molecular and Cellular Biology, University of Massachusetts, Amherst, MA 01003, USA
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Ryan KC, Guce AI, Johnson OE, Brunold TC, Cabelli DE, Garman SC, Maroney MJ. Nickel superoxide dismutase: structural and functional roles of His1 and its H-bonding network. Biochemistry 2015; 54:1016-27. [PMID: 25580509 DOI: 10.1021/bi501258u] [Citation(s) in RCA: 23] [Impact Index Per Article: 2.6] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022]
Abstract
Crystal structures of nickel-dependent superoxide dismutases (NiSODs) reveal the presence of a H-bonding network formed between the NH group of the apical imidazole ligand from His1 and the Glu17 carboxylate from a neighboring subunit in the hexameric enzyme. This interaction is supported by another intrasubunit H-bond between Glu17 and Arg47. In this study, four mutant NiSOD proteins were produced to experimentally evaluate the roles of this H-bonding network and compare the results with prior predictions from density functional theory calculations. The X-ray crystal structure of H1A-NiSOD, which lacks the apical ligand entirely, reveals that in the absence of the Glu17-His1 H-bond, the active site is disordered. Characterization of this variant using X-ray absorption spectroscopy (XAS) shows that Ni(II) is bound in the expected N2S2 planar coordination site. Despite these structural perturbations, the H1A-NiSOD variant retains 4% of wild-type (WT) NiSOD activity. Three other mutations were designed to preserve the apical imidazole ligand but perturb the H-bonding network: R47A-NiSOD, which lacks the intramolecular H-bonding interaction; E17R/R47A-NiSOD, which retains the intramolecular H-bond but lacks the intermolecular Glu17-His1 H-bond; and E17A/R47A-NiSOD, which lacks both H-bonding interactions. These variants were characterized by a combination of techniques, including XAS to probe the nickel site structure, kinetic studies employing pulse-radiolytic production of superoxide, and electron paramagnetic resonance to assess the Ni redox activity. The results indicate that in addition to the roles in redox tuning suggested on the basis of previous computational studies, the Glu17-His1 H-bond plays an important structural role in the proper folding of the "Ni-hook" motif that is a critical feature of the active site.
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Affiliation(s)
- Kelly C Ryan
- Department of Chemistry, University of Massachusetts at Amherst , 104 Lederle Graduate Research Tower A, 710 North Pleasant Street, Amherst, Massachusetts 01003, United States
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Ryan KC, Johnson OE, Cabelli DE, Brunold TC, Maroney MJ. Nickel superoxide dismutase: structural and functional roles of Cys2 and Cys6. J Biol Inorg Chem 2010; 15:795-807. [PMID: 20333421 PMCID: PMC3010328 DOI: 10.1007/s00775-010-0645-y] [Citation(s) in RCA: 40] [Impact Index Per Article: 2.9] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/30/2009] [Accepted: 02/11/2010] [Indexed: 11/28/2022]
Abstract
Nickel superoxide dismutase (NiSOD) is unique among the family of superoxide dismutase enzymes in that it coordinates Cys residues (Cys2 and Cys6) to the redox-active metal center and exhibits a hexameric quaternary structure. To assess the role of the Cys residues with respect to the activity of NiSOD, mutations of Cys2 and Cys6 to Ser (C2S-NiSOD, C6S-NiSOD, and C2S/C6S-NiSOD) were carried out. The resulting mutants do not catalyze the disproportionation of superoxide, but retain the hexameric structure found for wild-type NiSOD and bind Ni(II) ions in a 1:1 stoichiometry. X-ray absorption spectroscopic studies of the Cys mutants revealed that the nickel active-site structure for each mutant resembles that of C2S/C6S-NiSOD and demonstrate that mutation of either Cys2 or Cys6 inhibits coordination of the remaining Cys residue. Mutation of one or both Cys residue(s) in NiSOD induces the conversion of the low-spin Ni(II) site in the native enzyme to a high-spin Ni(II) center in the mutants. This result indicates that coordination of both Cys residues is required to generate the native low-spin configurations and maintain catalytic activity. Analysis of the quaternary structure of the Cys mutants by differential scanning calorimetry, mass spectrometry, and size-exclusion chromatography revealed that the Cys ligands, particularly Cys2, are also important for stabilizing the hexameric quaternary structure of the native enzyme.
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Affiliation(s)
- Kelly C. Ryan
- Department of Chemistry, University of Massachusetts at Amherst, 104 Lederle Graduate Research Tower A, 710 North Pleasant Street, Amherst, MA 01003, Phone: 413-545-4876, Fax: 413-545-4490
| | - Olivia E. Johnson
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Diane E. Cabelli
- Department of Chemistry, Building 555A Brookhaven National Laboratory, P.O. Box 5000, Upton, NY 11973
| | - Thomas C. Brunold
- Department of Chemistry, University of Wisconsin-Madison, 1101 University Avenue, Madison, WI 53706
| | - Michael J. Maroney
- Department of Chemistry, University of Massachusetts at Amherst, 104 Lederle Graduate Research Tower A, 710 North Pleasant Street, Amherst, MA 01003, Phone: 413-545-4876, Fax: 413-545-4490
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Allan CB, Wu LF, Gu Z, Choudhury SB, Al-Mjeni F, Sharma ML, Mandrand-Berthelot MA, Maroney MJ. An X-ray Absorption Spectroscopic Structural Investigation of the Nickel Site in Escherichia coli NikA Protein. Inorg Chem 1998. [DOI: 10.1021/ic980407t] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Affiliation(s)
- Christian B. Allan
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003-4510, and Laboratoire de Génétique Moléculaire des Microorganismes, CNRS-URA 1486, INSA, 69621 Villeurbanne Cedex, France
| | - Long-Fei Wu
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003-4510, and Laboratoire de Génétique Moléculaire des Microorganismes, CNRS-URA 1486, INSA, 69621 Villeurbanne Cedex, France
| | - Zhijie Gu
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003-4510, and Laboratoire de Génétique Moléculaire des Microorganismes, CNRS-URA 1486, INSA, 69621 Villeurbanne Cedex, France
| | - Suranjan B. Choudhury
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003-4510, and Laboratoire de Génétique Moléculaire des Microorganismes, CNRS-URA 1486, INSA, 69621 Villeurbanne Cedex, France
| | - Faizah Al-Mjeni
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003-4510, and Laboratoire de Génétique Moléculaire des Microorganismes, CNRS-URA 1486, INSA, 69621 Villeurbanne Cedex, France
| | - Manju L. Sharma
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003-4510, and Laboratoire de Génétique Moléculaire des Microorganismes, CNRS-URA 1486, INSA, 69621 Villeurbanne Cedex, France
| | - Marie-Andrée Mandrand-Berthelot
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003-4510, and Laboratoire de Génétique Moléculaire des Microorganismes, CNRS-URA 1486, INSA, 69621 Villeurbanne Cedex, France
| | - Michael J. Maroney
- Department of Chemistry, University of Massachusetts, Amherst, Massachusetts 01003-4510, and Laboratoire de Génétique Moléculaire des Microorganismes, CNRS-URA 1486, INSA, 69621 Villeurbanne Cedex, France
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Konze WV, Young, VG, Angelici RJ. Nickel Complexes Containing New Carbon−Phosphorus Unsaturated Ligands: First Examples of Phosphavinylidene−Phosphorane [R3PCPR‘] and Phosphavinyl Phosphonium [C(H)(PR3)P(R‘)]+ Ligands. Organometallics 1998. [DOI: 10.1021/om970895x] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Affiliation(s)
- Wayde V. Konze
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
| | - Victor G. Young,
- Department of Chemistry, Iowa State University, Ames, Iowa 50011
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Melnik, M, Vančová, V, Ondrejkovičová, I, E.Holloway, C. STRUCTURAL ASPECTS OF IRON COORDINATION COMPOUNDS : PART Π: DIMERIC AND OLIGOMERIC DERIVATIVES. REV INORG CHEM 1998. [DOI: 10.1515/revic.1998.18.1-2.1] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Eugen J, Marian K, Milan M, Jerzy M. STRUCTURAL INVESTIGATION OF NICKEL(II)-NICOTINAMIDE-SOLVENT INTERACTIONS IN SOLID COMPLEXES. CRYSTAL STRUCTURE OF [NI(H2O)4(NA)2](NO3)2·2H2O. J COORD CHEM 1996. [DOI: 10.1080/00958979608024342] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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Holloway, CE, Melnik, M. Manganese Coordination Compounds: Classification and Analysis of Crystallographic and Structural Data. REV INORG CHEM 1996. [DOI: 10.1515/revic.1996.16.2-3.101] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/15/2022]
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Carcelli M, Ianelli S, Mavilla L, Pelizzi C, Pelizzi G. Synthesis and spectroscopic characterization of bivalent metal complexes of 2,6-diacetylpyridine bis (octanoylhydrazone). X-ray crystal structure of a nickel (II) complex. Inorganica Chim Acta 1996. [DOI: 10.1016/0020-1693(95)04798-0] [Citation(s) in RCA: 13] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022]
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Maroney MJ. The Role of Nickel in Hydrogenases: Implications for a Heterodinuclear Active Site. COMMENT INORG CHEM 1995. [DOI: 10.1080/02603599508032712] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/23/2022]
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