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Behera N, Bhattacharyya G, Behera S, Behera RK. Iron mobilization from intact ferritin: effect of differential redox activity of quinone derivatives with NADH/O 2 and in situ-generated ROS. J Biol Inorg Chem 2024; 29:455-475. [PMID: 38780762 DOI: 10.1007/s00775-024-02058-w] [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: 01/17/2024] [Accepted: 04/10/2024] [Indexed: 05/25/2024]
Abstract
Ferritins are multimeric nanocage proteins that sequester/concentrate excess of free iron and catalytically synthesize a hydrated ferric oxyhydroxide bio-mineral. Besides functioning as the primary intracellular iron storehouses, these supramolecular assemblies also oversee the controlled release of iron to meet physiologic demands. By virtue of the reducing nature of the cytosol, reductive dissolution of ferritin-iron bio-mineral by physiologic reducing agents might be a probable pathway operating in vivo. Herein, to explore this reductive iron-release pathway, a series of quinone analogs differing in size, position/nature of substituents and redox potentials were employed to relay electrons from physiologic reducing agent, NADH, to the ferritin core. Quinones are well known natural electron/proton mediators capable of facilitating both 1/2 electron transfer processes and have been implicated in iron/nutrient acquisition in plants and energy transduction. Our findings on the structure-reactivity of quinone mediators highlight that iron release from ferritin is dictated by electron-relay capability (dependent on E1/2 values) of quinones, their molecular structure (i.e., the presence of iron-chelation sites and the propensity for H-bonding) and the type/amount of reactive oxygen species (ROS) they generate in situ. Juglone/Plumbagin released maximum iron due to their intermediate E1/2 values, presence of iron chelation sites, the ability to inhibit in situ generation of H2O2 and form intramolecular H-bonding (possibly promotes semiquinone formation). This study may strengthen our understanding of the ferritin-iron-release process and their significance in bioenergetics/O2-based cellular metabolism/toxicity while providing insights on microbial/plant iron acquisition and the dynamic host-pathogen interactions.
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Affiliation(s)
- Narmada Behera
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Gargee Bhattacharyya
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Satyabrat Behera
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, 769008, India
| | - Rabindra K Behera
- Department of Chemistry, National Institute of Technology, Rourkela, Odisha, 769008, India.
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Parida A, Mohanty A, Raut RK, Padhy I, Behera RK. Modification of 4-Fold and B-Pores in Bacterioferritin from Mycobacterium tuberculosis Reveals Their Role in Fe 2+ Entry and Oxidoreductase Activity. Inorg Chem 2023; 62:178-191. [PMID: 36525578 DOI: 10.1021/acs.inorgchem.2c03156] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/23/2022]
Abstract
The self-assembled ferritin nanocages, nature's solution to iron toxicity and its low solubility, scavenge free iron to synthesize hydrated ferric oxyhydroxide mineral inside their central cavity by protein-mediated ferroxidase and hydrolytic/nucleation reactions. These complex processes in ferritin commence with the rapid influx of Fe2+ ions via the inter-subunit contact points (i.e., pores/channels). Investigation of these pores as Fe2+ uptake routes in ferritins remains a subject of intense research, in iron metabolism, toxicity, and bacterial pathogenesis, which are yet to be established in the bacterioferritin (BfrA) from Mycobacterium tuberculosis (Mtb). The electrostatic properties of this protein indicate that the 4-fold and B-pores might serve as potential Fe2+ entry routes. Therefore, in the current work, electrostatics at/along these pores was altered by site-directed mutagenesis to establish their role in Fe2+ uptake/oxidation (ferroxidase activity) in Mtb BfrA. Despite forming self-assembled protein nanocompartment, these 4-fold and B-pore variants exhibited partial loss of ferroxidase activity and lower accumulation of transient species, which not only indicated their role in Fe2+ entry but also suggested the existence of multiple pathways. Although the B-pore variants inhibited the rapid ferroxidase activity to a larger extent, they had minimal impact on their cage stability. The current work revealed the relative contribution of these pores toward rapid Fe2+ uptake/oxidation and cage stability, possibly as consequences of their differential symmetry, number of modified residues (at each pore), and heme content. Therefore, these findings may help to understand the role of these pores in iron acquisition and Mtb proliferation under iron-limiting conditions to control its pathogenesis.
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Affiliation(s)
- Akankshika Parida
- Department of Chemistry, National Institute of Technology, Rourkela, 769008Odisha, India
| | - Abhinav Mohanty
- Department of Chemistry, National Institute of Technology, Rourkela, 769008Odisha, India
| | - Rohit Kumar Raut
- Department of Chemistry, National Institute of Technology, Rourkela, 769008Odisha, India
| | - Ipsita Padhy
- Department of Chemistry, National Institute of Technology, Rourkela, 769008Odisha, India
| | - Rabindra K Behera
- Department of Chemistry, National Institute of Technology, Rourkela, 769008Odisha, India
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Parida A, Mohanty A, Kansara BT, Behera RK. Impact of Phosphate on Iron Mineralization and Mobilization in Nonheme Bacterioferritin B from Mycobacterium tuberculosis. Inorg Chem 2019; 59:629-641. [DOI: 10.1021/acs.inorgchem.9b02894] [Citation(s) in RCA: 10] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/20/2022]
Affiliation(s)
- Akankshika Parida
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Abhinav Mohanty
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Bharat T. Kansara
- Tata Institute of Fundamental Research, Homi Bhabha Road, Colaba, Mumbai 400005, India
| | - Rabindra K. Behera
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
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Mohanty A, Subhadarshanee B, Barman P, Mahapatra C, Aishwarya B, Behera RK. Iron Mineralizing Bacterioferritin A from Mycobacterium tuberculosis Exhibits Unique Catalase-Dps-like Dual Activities. Inorg Chem 2019; 58:4741-4752. [DOI: 10.1021/acs.inorgchem.8b02758] [Citation(s) in RCA: 15] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
Affiliation(s)
- Abhinav Mohanty
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Biswamaitree Subhadarshanee
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
- School of Biotechnology, Kalinga Institute of Industrial Technology (KIIT), Bhubaneswar 751024, Odisha, India
| | - Pallavi Barman
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Chinmayee Mahapatra
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - B. Aishwarya
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
| | - Rabindra K. Behera
- Department of Chemistry, National Institute of Technology, Rourkela 769008, Odisha, India
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Oliveira FM, Da Costa AC, Procopio VO, Garcia W, Araújo JN, Da Silva RA, Junqueira-Kipnis AP, Kipnis A. Mycobacterium abscessus subsp. massiliense mycma_0076 and mycma_0077 Genes Code for Ferritins That Are Modulated by Iron Concentration. Front Microbiol 2018; 9:1072. [PMID: 29910777 PMCID: PMC5992710 DOI: 10.3389/fmicb.2018.01072] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2018] [Accepted: 05/04/2018] [Indexed: 12/19/2022] Open
Abstract
Mycobacterium abscessus complex has been characterized in the last decade as part of a cluster of mycobacteria that evolved from an opportunistic to true human pathogen; however, the factors responsible for pathogenicity are still undefined. It appears that the success of mycobacterial infection is intrinsically related with the capacity of the bacteria to regulate intracellular iron levels, mostly using iron storage proteins. This study evaluated two potential M. abscessus subsp. massiliense genes involved in iron storage. Unlike other opportunist or pathogenic mycobacteria studied, M. abscessus complex has two genes similar to ferritins from M. tuberculosis (Rv3841), and in M. abscessus subsp. massiliense, those genes are annotated as mycma_0076 and mycma_0077. Molecular dynamic analysis of the predicted expressed proteins showed that they have a ferroxidase center. The expressions of mycma_0076 and mycma_0077 genes were modulated by the iron levels in both in vitro cultures as well as infected macrophages. Structural studies using size-exclusion chromatography, circular dichroism spectroscopy and dynamic light scattering showed that r0076 protein has a structure similar to those observed in the ferritin family. The r0076 forms oligomers in solution most likely composed of 24 subunits. Functional studies with recombinant proteins, obtained from heterologous expression of mycma_0076 and mycma_0077 genes in Escherichia coli, showed that both proteins were capable of oxidizing Fe2+ into Fe3+, demonstrating that these proteins have a functional ferroxidase center. In conclusion, two ferritins proteins were shown, for the first time, to be involved in iron storage in M. abscessus subsp. massiliense and their expressions were modulated by the iron levels.
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Affiliation(s)
- Fábio M. Oliveira
- Tropical Institute of Pathology and Public Health, Department of Microbiology, Immunology, Parasitology and Pathology, Federal University of Goiás, Goiânia, Brazil
| | - Adeliane C. Da Costa
- Tropical Institute of Pathology and Public Health, Department of Microbiology, Immunology, Parasitology and Pathology, Federal University of Goiás, Goiânia, Brazil
| | - Victor O. Procopio
- Tropical Institute of Pathology and Public Health, Department of Microbiology, Immunology, Parasitology and Pathology, Federal University of Goiás, Goiânia, Brazil
| | - Wanius Garcia
- Centro de Ciências Naturais e Humanas, Federal University of ABC (UFABC), Santo André, Brazil
| | - Juscemácia N. Araújo
- Centro de Ciências Naturais e Humanas, Federal University of ABC (UFABC), Santo André, Brazil
| | - Roosevelt A. Da Silva
- Collaborative Center of Biosystems, Regional Jataí, Federal University of Goiás, Goiânia, Brazil
| | - Ana Paula Junqueira-Kipnis
- Tropical Institute of Pathology and Public Health, Department of Microbiology, Immunology, Parasitology and Pathology, Federal University of Goiás, Goiânia, Brazil
| | - André Kipnis
- Tropical Institute of Pathology and Public Health, Department of Microbiology, Immunology, Parasitology and Pathology, Federal University of Goiás, Goiânia, Brazil
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Pulsipher KW, Villegas JA, Roose BW, Hicks TL, Yoon J, Saven JG, Dmochowski IJ. Thermophilic Ferritin 24mer Assembly and Nanoparticle Encapsulation Modulated by Interdimer Electrostatic Repulsion. Biochemistry 2017; 56:3596-3606. [PMID: 28682599 DOI: 10.1021/acs.biochem.7b00296] [Citation(s) in RCA: 24] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/21/2023]
Abstract
Protein cage self-assembly enables encapsulation and sequestration of small molecules, macromolecules, and nanomaterials for many applications in bionanotechnology. Notably, wild-type thermophilic ferritin from Archaeoglobus fulgidus (AfFtn) exists as a stable dimer of four-helix bundle proteins at a low ionic strength, and the protein forms a hollow assembly of 24 protomers at a high ionic strength (∼800 mM NaCl). This assembly process can also be initiated by highly charged gold nanoparticles (AuNPs) in solution, leading to encapsulation. These data suggest that salt solutions or charged AuNPs can shield unfavorable electrostatic interactions at AfFtn dimer-dimer interfaces, but specific "hot-spot" residues controlling assembly have not been identified. To investigate this further, we computationally designed three AfFtn mutants (E65R, D138K, and A127R) that introduce a single positive charge at sites along the dimer-dimer interface. These proteins exhibited different assembly kinetics and thermodynamics, which were ranked in order of increasing 24mer propensity: A127R < wild type < D138K ≪ E65R. E65R assembled into the 24mer across a wide range of ionic strengths (0-800 mM NaCl), and the dissociation temperature for the 24mer was 98 °C. X-ray crystal structure analysis of the E65R mutant identified a more compact, closed-pore cage geometry. A127R and D138K mutants exhibited wild-type ability to encapsulate and stabilize 5 nm AuNPs, whereas E65R did not encapsulate AuNPs at the same high yields. This work illustrates designed protein cages with distinct assembly and encapsulation properties.
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Affiliation(s)
- Katherine W Pulsipher
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Jose A Villegas
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Benjamin W Roose
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Tacey L Hicks
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Jennifer Yoon
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Jeffery G Saven
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
| | - Ivan J Dmochowski
- Department of Chemistry, University of Pennsylvania , 231 South 34th Street, Philadelphia, Pennsylvania 19104, United States
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Ohtomo H, Ohtomo M, Sato D, Kurobe A, Sunato A, Matsumura Y, Kihara H, Fujiwara K, Ikeguchi M. A Physicochemical and Mutational Analysis of Intersubunit Interactions of Escherichia coli Ferritin A. Biochemistry 2015; 54:6243-51. [PMID: 26399896 DOI: 10.1021/acs.biochem.5b00723] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/30/2022]
Abstract
Ferritin A from Escherichia coli (EcFtnA) is 24-meric protein, which forms spherical cagelike structures called nanocages. The nanocage structure is stabilized by the interface around 4-, 3-, and 2-fold symmetric axes. The subunit structure of EcFtnA comprises a four-helix bundle (helices A-D) and an additional helix E, which forms a 4-fold axis. In this study, we examined the contribution of the interface around three symmetric axes. pH-induced dissociation experiments monitored by analytical ultracentrifugation and small-angle X-ray scattering showed that the dimer related by 2-fold symmetry is the most stable unit. Mutations located near the 3-fold axis revealed that the contribution of each interaction was small. A mutant lacking helix E at the 4-fold axis formed a nanocage, suggesting that helix E is not essential for nanocage formation. Further truncation of the C-terminus of helix D abrogated the formation of the nanocage, suggesting that a few residues located at the C-terminus of helix D are critical for this process. These properties are similar to those known for mammalian ferritins and seem to be common principles for nanocage formation. The difference between EcFtnA and mammalian ferritins was that helix E-truncated EcFtnA maintained an iron-incorporating ability, whereas mammalian mutants lost it.
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Affiliation(s)
- Hideaki Ohtomo
- Department of Bioinformatics, Soka University , 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan
| | - Mio Ohtomo
- Department of Bioinformatics, Soka University , 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan
| | - Daisuke Sato
- Department of Bioinformatics, Soka University , 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan
| | - Atsushi Kurobe
- Department of Bioinformatics, Soka University , 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan
| | - Ayumi Sunato
- Department of Bioinformatics, Soka University , 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan
| | - Yoshitaka Matsumura
- Department of Physics, Kansai Medical University , 18-89 Uyama-Higashi, Hirakata 573-1136, Japan
| | - Hiroshi Kihara
- Department of Physics, Kansai Medical University , 18-89 Uyama-Higashi, Hirakata 573-1136, Japan
| | - Kazuo Fujiwara
- Department of Bioinformatics, Soka University , 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan
| | - Masamichi Ikeguchi
- Department of Bioinformatics, Soka University , 1-236 Tangi-cho, Hachioji, Tokyo 192-8577, Japan
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