1
|
Gomes JGDS, Brandão LC, Pinheiro DP, Pontes LQ, Carneiro RF, Quintela BCSF, Marinho ACM, Furtado GP, Rocha BAM. Kinetics characterization of a low immunogenic recombinant l-asparaginase from Phaseolus vulgaris with cytotoxic activity against leukemia cells. Int J Biol Macromol 2024; 275:133731. [PMID: 38986978 DOI: 10.1016/j.ijbiomac.2024.133731] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/18/2024] [Revised: 06/15/2024] [Accepted: 07/06/2024] [Indexed: 07/12/2024]
Abstract
l-asparaginases play a crucial role in the treatment of acute lymphoblastic leukemia (ALL), a type of cancer that mostly affects children and teenagers. However, it is common for these molecules to cause adverse reactions during treatment. These downsides ignite the search for novel asparaginases to mitigate these problems. Thus, this work aimed to produce and characterize a recombinant asparaginase from Phaseolus vulgaris (Asp-P). In this study, Asp-P was expressed in Escherichia coli with high yields and optimum activity at 40 °C, pH 9.0. The enzyme Km and Vmax values were 7.05 mM and 1027 U/mg, respectively. Asp-P is specific for l-asparagine, showing no activity against l-glutamine and other amino acids. The enzyme showed a higher cytotoxic effect against Raji than K562 cell lines, but only at high concentrations. In silico analysis indicated that Asp-P has lower immunogenicity than a commercial enzyme. Asp-P induced biofilm formation by Candida sp. due to sublethal dose, showing an underexplored potential of asparaginases. The absence of glutaminase activity, lower immunogenicity and optimal activity similar to physiological temperature conditions are characteristics that indicate Asp-P as a potential new commercial enzyme in the treatment of ALL and its underexplored application in the treatment of other diseases.
Collapse
Affiliation(s)
| | - Larisse Cadeira Brandão
- Departament of Fishing Engineering, Federal University of Ceara, Fortaleza, Brazil; Oswaldo Cruz Foundation - Fiocruz Ceara, Eusebio, Ceara, Brazil
| | | | | | | | | | | | | | | |
Collapse
|
2
|
Wlodawer A, Dauter Z, Lubkowski J, Loch JI, Brzezinski D, Gilski M, Jaskolski M. Towards a dependable data set of structures for L-asparaginase research. Acta Crystallogr D Struct Biol 2024; 80:506-527. [PMID: 38935343 PMCID: PMC11220836 DOI: 10.1107/s2059798324005461] [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: 02/21/2024] [Accepted: 06/07/2024] [Indexed: 06/28/2024] Open
Abstract
The Protein Data Bank (PDB) includes a carefully curated treasury of experimentally derived structural data on biological macromolecules and their various complexes. Such information is fundamental for a multitude of projects that involve large-scale data mining and/or detailed evaluation of individual structures of importance to chemistry, biology and, most of all, to medicine, where it provides the foundation for structure-based drug discovery. However, despite extensive validation mechanisms, it is almost inevitable that among the ∼215 000 entries there will occasionally be suboptimal or incorrect structure models. It is thus vital to apply careful verification procedures to those segments of the PDB that are of direct medicinal interest. Here, such an analysis was carried out for crystallographic models of L-asparaginases, enzymes that include approved drugs for the treatment of certain types of leukemia. The focus was on the adherence of the atomic coordinates to the rules of stereochemistry and their agreement with the experimental electron-density maps. Whereas the current clinical application of L-asparaginases is limited to two bacterial proteins and their chemical modifications, the field of investigations of such enzymes has expanded tremendously in recent years with the discovery of three entirely different structural classes and with numerous reports, not always quite reliable, of the anticancer properties of L-asparaginases of different origins.
Collapse
Affiliation(s)
- Alexander Wlodawer
- Center for Structural Biology, Center for Cancer ResearchNational Cancer InstituteMarylandUSA
| | - Zbigniew Dauter
- Center for Structural Biology, Center for Cancer ResearchNational Cancer InstituteMarylandUSA
| | - Jacek Lubkowski
- Center for Structural Biology, Center for Cancer ResearchNational Cancer InstituteMarylandUSA
| | - Joanna I. Loch
- Department of Crystal Chemistry and Crystal Physics, Faculty of ChemistryJagiellonian UniversityCracowPoland
| | - Dariusz Brzezinski
- Institute of Computing SciencePoznan University of TechnologyPoznanPoland
| | - Miroslaw Gilski
- Institute of Bioorganic ChemistryPolish Academy of SciencesPoznanPoland
- Department of Crystallography, Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
| | - Mariusz Jaskolski
- Institute of Bioorganic ChemistryPolish Academy of SciencesPoznanPoland
- Department of Crystallography, Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
| |
Collapse
|
3
|
Sliwiak J, Worsztynowicz P, Pokrywka K, Loch JI, Grzechowiak M, Jaskolski M. Biochemical characterization of L-asparaginase isoforms from Rhizobium etli-the boosting effect of zinc. Front Chem 2024; 12:1373312. [PMID: 38456185 PMCID: PMC10917881 DOI: 10.3389/fchem.2024.1373312] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/19/2024] [Accepted: 02/09/2024] [Indexed: 03/09/2024] Open
Abstract
L-Asparaginases, divided into three structural Classes, catalyze the hydrolysis of L-asparagine to L-aspartic acid and ammonia. The members of Class 3, ReAIV and ReAV, encoded in the genome of the nitrogen fixing Rhizobium etli, have the same fold, active site, and quaternary structure, despite low sequence identity. In the present work we examined the biochemical consequences of this difference. ReAIV is almost twice as efficient as ReAV in asparagine hydrolysis at 37°C, with the kinetic KM, kcat parameters (measured in optimal buffering agent) of 1.5 mM, 770 s-1 and 2.1 mM, 603 s-1, respectively. The activity of ReAIV has a temperature optimum at 45°C-55°C, whereas the activity of ReAV, after reaching its optimum at 37°C, decreases dramatically at 45°C. The activity of both isoforms is boosted by 32 or 56%, by low and optimal concentration of zinc, which is bound three times more strongly by ReAIV then by ReAV, as reflected by the KD values of 1.2 and 3.3 μM, respectively. We also demonstrate that perturbation of zinc binding by Lys→Ala point mutagenesis drastically decreases the enzyme activity but also changes the mode of response to zinc. We also examined the impact of different divalent cations on the activity, kinetics, and stability of both isoforms. It appeared that Ni2+, Cu2+, Hg2+, and Cd2+ have the potential to inhibit both isoforms in the following order (from the strongest to weakest inhibitors) Hg2+ > Cu2+ > Cd2+ > Ni2+. ReAIV is more sensitive to Cu2+ and Cd2+, while ReAV is more sensitive to Hg2+ and Ni2+, as revealed by IC50 values, melting scans, and influence on substrate specificity. Low concentration of Cd2+ improves substrate specificity of both isoforms, suggesting its role in substrate recognition. The same observation was made for Hg2+ in the case of ReAIV. The activity of the ReAV isoform is less sensitive to Cl- anions, as reflected by the IC50 value for NaCl, which is eightfold higher for ReAV relative to ReAIV. The uncovered complementary properties of the two isoforms help us better understand the inducibility of the ReAV enzyme.
Collapse
Affiliation(s)
- Joanna Sliwiak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | | | - Kinga Pokrywka
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Joanna I. Loch
- Department of Crystal Chemistry and Crystal Physics, Faculty of Chemistry, Jagiellonian University, Krakow, Poland
| | - Marta Grzechowiak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Mariusz Jaskolski
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
- Department of Crystallography, Faculty of Chemistry, Adam Mickiewicz University, Poznan, Poland
| |
Collapse
|
4
|
Shishparenok AN, Gladilina YA, Zhdanov DD. Engineering and Expression Strategies for Optimization of L-Asparaginase Development and Production. Int J Mol Sci 2023; 24:15220. [PMID: 37894901 PMCID: PMC10607044 DOI: 10.3390/ijms242015220] [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: 09/21/2023] [Revised: 10/11/2023] [Accepted: 10/13/2023] [Indexed: 10/29/2023] Open
Abstract
Genetic engineering for heterologous expression has advanced in recent years. Model systems such as Escherichia coli, Bacillus subtilis and Pichia pastoris are often used as host microorganisms for the enzymatic production of L-asparaginase, an enzyme widely used in the clinic for the treatment of leukemia and in bakeries for the reduction of acrylamide. Newly developed recombinant L-asparaginase (L-ASNase) may have a low affinity for asparagine, reduced catalytic activity, low stability, and increased glutaminase activity or immunogenicity. Some successful commercial preparations of L-ASNase are now available. Therefore, obtaining novel L-ASNases with improved properties suitable for food or clinical applications remains a challenge. The combination of rational design and/or directed evolution and heterologous expression has been used to create enzymes with desired characteristics. Computer design, combined with other methods, could make it possible to generate mutant libraries of novel L-ASNases without costly and time-consuming efforts. In this review, we summarize the strategies and approaches for obtaining and developing L-ASNase with improved properties.
Collapse
Affiliation(s)
- Anastasiya N. Shishparenok
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.N.S.); (Y.A.G.)
| | - Yulia A. Gladilina
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.N.S.); (Y.A.G.)
| | - Dmitry D. Zhdanov
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, Pogodinskaya St. 10/8, 119121 Moscow, Russia; (A.N.S.); (Y.A.G.)
- Department of Biochemistry, Peoples’ Friendship University of Russia named after Patrice Lumumba (RUDN University), Miklukho—Maklaya St. 6, 117198 Moscow, Russia
| |
Collapse
|
5
|
Dumina M, Zhgun A. Thermo-L-Asparaginases: From the Role in the Viability of Thermophiles and Hyperthermophiles at High Temperatures to a Molecular Understanding of Their Thermoactivity and Thermostability. Int J Mol Sci 2023; 24:ijms24032674. [PMID: 36768996 PMCID: PMC9916696 DOI: 10.3390/ijms24032674] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/16/2022] [Revised: 01/25/2023] [Accepted: 01/28/2023] [Indexed: 02/03/2023] Open
Abstract
L-asparaginase (L-ASNase) is a vital enzyme with a broad range of applications in medicine, food industry, and diagnostics. Among various organisms expressing L-ASNases, thermophiles and hyperthermophiles produce enzymes with superior performances-stable and heat resistant thermo-ASNases. This review is an attempt to take a broader view on the thermo-ASNases. Here we discuss the position of thermo-ASNases in the large family of L-ASNases, their role in the heat-tolerance cellular system of thermophiles and hyperthermophiles, and molecular aspects of their thermoactivity and thermostability. Different types of thermo-ASNases exhibit specific L-asparaginase activity and additional secondary activities. All products of these enzymatic reactions are associated with diverse metabolic pathways and are important for mitigating heat stress. Thermo-ASNases are quite distinct from typical mesophilic L-ASNases based on structural properties, kinetic and activity profiles. Here we attempt to summarize the current understanding of the molecular mechanisms of thermo-ASNases' thermoactivity and thermostability, from amino acid composition to structural-functional relationships. Research of these enzymes has fundamental and biotechnological significance. Thermo-ASNases and their improved variants, cloned and expressed in mesophilic hosts, can form a large pool of enzymes with valuable characteristics for biotechnological application.
Collapse
|
6
|
Pajak A, Zaman D, Ajewole E, Pandurangan S, Marsolais F. Diurnal accumulation of K +-dependent L-asparaginase in leaf of common bean (Phaseolus vulgaris L.). PHYTOCHEMISTRY 2023; 205:113489. [PMID: 36328196 DOI: 10.1016/j.phytochem.2022.113489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 05/02/2022] [Revised: 09/23/2022] [Accepted: 10/23/2022] [Indexed: 06/16/2023]
Abstract
L-Asparaginase (EC 3.5.1.1) activity has been previously reported to fluctuate with the photoperiod in young pea leaves, with higher activity in the light. The present research sought to investigate this phenomenon in developing leaves of common bean (Phaseolus vulgaris L.). There are two genes coding for K+-dependent asparaginase in this species. Expression of PvASPG1 predominates over PvASPG2 in all tissues. The catalytic efficiency of recombinant PvASPG2 was approximately 2-fold lower than that of PvASPG1. Polyclonal antibodies were raised against a specific peptide present in PvASPG1 to use in immunoblotting. In developing seed, asparaginase protein levels in the seed coat stayed constant, whereas levels in cotyledon were lower and progressively declined. In young leaf, asparagine protein levels showed diurnal variation, increasing at the end of the dark period and slowly decreasing during the light period. This was paralleled by changes in activity levels in leaf extracts. These changes accompanied a transient increase in free asparagine concentration at the beginning of the light period. The present results demonstrated that K+-dependent asparaginase activity reaches a maximum level at the transition from dark to light, anticipating dawn, in young leaves of common bean.
Collapse
Affiliation(s)
- Aga Pajak
- Genomics and Biotechnology, London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St., London, Ontario, N5V 4T3, Canada.
| | - Dristy Zaman
- Genomics and Biotechnology, London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St., London, Ontario, N5V 4T3, Canada; Department of Biology, University of Western Ontario, 1151 Richmond St., London, Ontario, N6A 5B7, Canada.
| | - Ebenezer Ajewole
- Genomics and Biotechnology, London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St., London, Ontario, N5V 4T3, Canada; Department of Biology, University of Western Ontario, 1151 Richmond St., London, Ontario, N6A 5B7, Canada.
| | - Sudhakar Pandurangan
- Genomics and Biotechnology, London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St., London, Ontario, N5V 4T3, Canada.
| | - Frédéric Marsolais
- Genomics and Biotechnology, London Research and Development Centre, Agriculture and Agri-Food Canada, 1391 Sandford St., London, Ontario, N5V 4T3, Canada; Department of Biology, University of Western Ontario, 1151 Richmond St., London, Ontario, N6A 5B7, Canada.
| |
Collapse
|
7
|
Loch JI, Klonecka A, Kądziołka K, Bonarek P, Barciszewski J, Imiolczyk B, Brzezinski K, Gilski M, Jaskolski M. Structural and biophysical studies of new L-asparaginase variants: lessons from random mutagenesis of the prototypic Escherichia coli Ntn-amidohydrolase. Acta Crystallogr D Struct Biol 2022; 78:911-926. [PMID: 35775990 PMCID: PMC9248843 DOI: 10.1107/s2059798322005691] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/19/2022] [Accepted: 05/25/2022] [Indexed: 11/11/2022] Open
Abstract
This work reports the results of random mutagenesis of the Escherichia coli class 2 L-asparaginase EcAIII belonging to the Ntn-hydrolase family. New variants of EcAIII were studied using structural, biophysical and bioinformatic methods. Activity tests revealed that the L-asparaginase activity is abolished in all analyzed mutants with the absence of Arg207, but some of them retained the ability to undergo the autoproteolytic maturation process. The results of spectroscopic studies and the determined crystal structures showed that the EcAIII fold is flexible enough to accept different types of mutations; however, these mutations may have a diverse impact on the thermal stability of the protein. The conclusions from the experiments are grouped into six lessons focused on (i) the adaptation of the EcAIII fold to new substitutions, (ii) the role of Arg207 in EcAIII activity, (iii) a network of residues necessary for autoprocessing, (iv) the complexity of the autoprocessing reaction, (v) the conformational changes observed in enzymatically inactive variants and (vi) the cooperativity of the EcAIII dimer subunits. Additionally, the structural requirements (pre-maturation checkpoints) that are necessary for the initiation of the autocleavage of Ntn-hydrolases have been classified. The findings reported in this work provide useful hints that should be considered before planning enzyme-engineering experiments aimed at the design of proteins for therapeutic applications. This is especially important for L-asparaginases that can be utilized in leukemia therapy, as alternative therapeutics are urgently needed to circumvent the severe side effects associated with the currently used enzymes.
Collapse
|
8
|
Dumina M, Zhgun A, Pokrovskaya M, Aleksandrova S, Zhdanov D, Sokolov N, El’darov M. Highly Active Thermophilic L-Asparaginase from Melioribacter roseus Represents a Novel Large Group of Type II Bacterial L-Asparaginases from Chlorobi-Ignavibacteriae-Bacteroidetes Clade. Int J Mol Sci 2021; 22:13632. [PMID: 34948436 PMCID: PMC8709496 DOI: 10.3390/ijms222413632] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/23/2021] [Revised: 12/15/2021] [Accepted: 12/17/2021] [Indexed: 02/07/2023] Open
Abstract
L-asparaginase (L-ASNase) is a biotechnologically relevant enzyme for the pharmaceutical, biosensor and food industries. Efforts to discover new promising L-ASNases for different fields of biotechnology have turned this group of enzymes into a growing family with amazing diversity. Here, we report that thermophile Melioribacter roseus from Ignavibacteriae of the Bacteroidetes/Chlorobi group possesses two L-ASNases-bacterial type II (MrAII) and plant-type (MrAIII). The current study is focused on a novel L-ASNase MrAII that was expressed in Escherichia coli, purified and characterized. The enzyme is optimally active at 70 °C and pH 9.3, with a high L-asparaginase activity of 1530 U/mg and L-glutaminase activity ~19% of the activity compared with L-asparagine. The kinetic parameters KM and Vmax for the enzyme were 1.4 mM and 5573 µM/min, respectively. The change in MrAII activity was not significant in the presence of 10 mM Ni2+, Mg2+ or EDTA, but increased with the addition of Cu2+ and Ca2+ by 56% and 77%, respectively, and was completely inhibited by Zn2+, Fe3+ or urea solutions 2-8 M. MrAII displays differential cytotoxic activity: cancer cell lines K562, Jurkat, LnCap, and SCOV-3 were more sensitive to MrAII treatment, compared with normal cells. MrAII represents the first described enzyme of a large group of uncharacterized counterparts from the Chlorobi-Ignavibacteriae-Bacteroidetes clade.
Collapse
Affiliation(s)
- Maria Dumina
- Group of Fungal Genetic Engineering, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences, 117312 Moscow, Russia;
| | - Alexander Zhgun
- Group of Fungal Genetic Engineering, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences, 117312 Moscow, Russia;
| | - Marina Pokrovskaya
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (M.P.); (S.A.); (D.Z.); (N.S.)
| | - Svetlana Aleksandrova
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (M.P.); (S.A.); (D.Z.); (N.S.)
| | - Dmitry Zhdanov
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (M.P.); (S.A.); (D.Z.); (N.S.)
| | - Nikolay Sokolov
- Laboratory of Medical Biotechnology, Institute of Biomedical Chemistry, 119121 Moscow, Russia; (M.P.); (S.A.); (D.Z.); (N.S.)
| | - Michael El’darov
- Group of Fungal Genetic Engineering, Federal Research Center “Fundamentals of Biotechnology” of the Russian Academy of Sciences, 117312 Moscow, Russia;
| |
Collapse
|
9
|
Loch JI, Imiolczyk B, Sliwiak J, Wantuch A, Bejger M, Gilski M, Jaskolski M. Crystal structures of the elusive Rhizobium etli L-asparaginase reveal a peculiar active site. Nat Commun 2021; 12:6717. [PMID: 34795296 PMCID: PMC8602277 DOI: 10.1038/s41467-021-27105-x] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/29/2021] [Accepted: 11/01/2021] [Indexed: 12/04/2022] Open
Abstract
Rhizobium etli, a nitrogen-fixing bacterial symbiont of legume plants, encodes an essential L-asparaginase (ReAV) with no sequence homology to known enzymes with this activity. High-resolution crystal structures of ReAV show indeed a structurally distinct, dimeric enzyme, with some resemblance to glutaminases and β-lactamases. However, ReAV has no glutaminase or lactamase activity, and at pH 9 its allosteric asparaginase activity is relatively high, with Km for L-Asn at 4.2 mM and kcat of 438 s-1. The active site of ReAV, deduced from structural comparisons and confirmed by mutagenesis experiments, contains a highly specific Zn2+ binding site without a catalytic role. The extensive active site includes residues with unusual chemical properties. There are two Ser-Lys tandems, all connected through a network of H-bonds to the Zn center, and three tightly bound water molecules near Ser48, which clearly indicate the catalytic nucleophile.
Collapse
Affiliation(s)
- Joanna I Loch
- Department of Crystal Chemistry and Crystal Physics, Faculty of Chemistry, Jagiellonian University, Krakow, Poland
| | - Barbara Imiolczyk
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Joanna Sliwiak
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Anna Wantuch
- Department of Crystal Chemistry and Crystal Physics, Faculty of Chemistry, Jagiellonian University, Krakow, Poland
| | - Magdalena Bejger
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| | - Miroslaw Gilski
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
- Department of Crystallography, Faculty of Chemistry, A. Mickiewicz University, Poznan, Poland
| | - Mariusz Jaskolski
- Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland.
- Department of Crystallography, Faculty of Chemistry, A. Mickiewicz University, Poznan, Poland.
| |
Collapse
|
10
|
Cui J, Tcherkez G. Potassium dependency of enzymes in plant primary metabolism. PLANT PHYSIOLOGY AND BIOCHEMISTRY : PPB 2021; 166:522-530. [PMID: 34174657 DOI: 10.1016/j.plaphy.2021.06.017] [Citation(s) in RCA: 23] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/29/2021] [Accepted: 06/10/2021] [Indexed: 06/13/2023]
Abstract
Potassium is a macroelement essential to many aspects of plant life, such as photosynthesis, phloem transport or cellular electrochemistry. Many enzymes in animals or microbes are known to be stimulated or activated by potassium (K+ ions). Several plant enzymes are also strictly K+-dependent, and this can be critical when plants are under K deficiency and thus intracellular K+ concentration is low. Although metabolic effects of low K conditions have been documented, there is presently no review focusing on roles of K+ for enzyme catalysis or activation in plants. In this mini-review, we compile the current knowledge on K+-requirement of plant enzymes and take advantage of structural data to present biochemical roles of K+. This information is instrumental to explain direct effects of low K+ content on metabolism and this is illustrated with recent metabolomics data.
Collapse
Affiliation(s)
- Jing Cui
- Research School of Biology, ANU Joint College of Sciences, Australian National University, 2601, Canberra, Australia
| | - Guillaume Tcherkez
- Research School of Biology, ANU Joint College of Sciences, Australian National University, 2601, Canberra, Australia; Institut de Recherche en Horticulture et Semences, INRAe Angers, Université d'Angers, 42 rue Georges Morel, 49070, Beaucouzé, France.
| |
Collapse
|
11
|
Jia R, Wan X, Geng X, Xue D, Xie Z, Chen C. Microbial L-asparaginase for Application in Acrylamide Mitigation from Food: Current Research Status and Future Perspectives. Microorganisms 2021; 9:microorganisms9081659. [PMID: 34442737 PMCID: PMC8400838 DOI: 10.3390/microorganisms9081659] [Citation(s) in RCA: 40] [Impact Index Per Article: 13.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/08/2021] [Revised: 07/30/2021] [Accepted: 08/02/2021] [Indexed: 12/31/2022] Open
Abstract
L-asparaginase (E.C.3.5.1.1) hydrolyzes L-asparagine to L-aspartic acid and ammonia, which has been widely applied in the pharmaceutical and food industries. Microbes have advantages for L-asparaginase production, and there are several commercially available forms of L-asparaginase, all of which are derived from microbes. Generally, L-asparaginase has an optimum pH range of 5.0-9.0 and an optimum temperature of between 30 and 60 °C. However, the optimum temperature of L-asparaginase from hyperthermophilic archaea is considerable higher (between 85 and 100 °C). The native properties of the enzymes can be enhanced by using immobilization techniques. The stability and recyclability of immobilized enzymes makes them more suitable for food applications. This current work describes the classification, catalytic mechanism, production, purification, and immobilization of microbial L-asparaginase, focusing on its application as an effective reducer of acrylamide in fried potato products, bakery products, and coffee. This highlights the prospects of cost-effective L-asparaginase, thermostable L-asparaginase, and immobilized L-asparaginase as good candidates for food application in the future.
Collapse
Affiliation(s)
- Ruiying Jia
- Institute of Nursing and Health, College of Nursing and Health, Henan University, Kaifeng 475004, China; (R.J.); (X.W.)
| | - Xiao Wan
- Institute of Nursing and Health, College of Nursing and Health, Henan University, Kaifeng 475004, China; (R.J.); (X.W.)
| | - Xu Geng
- School of Basic Medicine, Henan University, Jinming Avenue, Kaifeng 475004, China;
- Correspondence: (X.G.); (C.C.)
| | - Deming Xue
- School of Life Science, Henan Normal University, Xinxiang 453007, China;
| | - Zhenxing Xie
- School of Basic Medicine, Henan University, Jinming Avenue, Kaifeng 475004, China;
| | - Chaoran Chen
- Institute of Nursing and Health, College of Nursing and Health, Henan University, Kaifeng 475004, China; (R.J.); (X.W.)
- Correspondence: (X.G.); (C.C.)
| |
Collapse
|
12
|
Loch JI, Jaskolski M. Structural and biophysical aspects of l-asparaginases: a growing family with amazing diversity. IUCRJ 2021; 8:514-531. [PMID: 34258001 PMCID: PMC8256714 DOI: 10.1107/s2052252521006011] [Citation(s) in RCA: 9] [Impact Index Per Article: 3.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Subscribe] [Scholar Register] [Received: 03/19/2021] [Accepted: 06/09/2021] [Indexed: 06/13/2023]
Abstract
l-Asparaginases have remained an intriguing research topic since their discovery ∼120 years ago, especially after their introduction in the 1960s as very efficient antileukemic drugs. In addition to bacterial asparaginases, which are still used to treat childhood leukemia, enzymes of plant and mammalian origin are now also known. They have all been structurally characterized by crystallography, in some cases at outstanding resolution. The structural data have also shed light on the mechanistic details of these deceptively simple enzymes. Yet, despite all this progress, no better therapeutic agents have been found to beat bacterial asparaginases. However, a new option might arise with the discovery of yet another type of asparaginase, those from symbiotic nitrogen-fixing Rhizobia, and with progress in the protein engineering of enzymes with desired properties. This review surveys the field of structural biology of l-asparaginases, focusing on the mechanistic aspects of the well established types and speculating about the potential of the new members of this amazingly diversified family.
Collapse
Affiliation(s)
- Joanna I. Loch
- Department of Crystal Chemistry and Crystal Physics, Faculty of Chemistry, Jagiellonian University, Cracow, Poland
| | - Mariusz Jaskolski
- Department of Crystallography, Faculty of Chemistry, A. Mickiewicz University, Poznan, Poland
- Center for Biocrystallographic Research, Institute of Bioorganic Chemistry, Polish Academy of Sciences, Poznan, Poland
| |
Collapse
|
13
|
Nagaratnam N, Delker SL, Jernigan R, Edwards TE, Snider J, Thifault D, Williams D, Nannenga BL, Stofega M, Sambucetti L, Hsieh JJ, Flint AJ, Fromme P, Martin-Garcia JM. Structural insights into the function of the catalytically active human Taspase1. Structure 2021; 29:873-885.e5. [PMID: 33784495 DOI: 10.1016/j.str.2021.03.008] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/28/2020] [Revised: 02/07/2021] [Accepted: 03/10/2021] [Indexed: 12/15/2022]
Abstract
Taspase1 is an Ntn-hydrolase overexpressed in primary human cancers, coordinating cancer cell proliferation, invasion, and metastasis. Loss of Taspase1 activity disrupts proliferation of human cancer cells in vitro and in mouse models of glioblastoma. Taspase1 is synthesized as an inactive proenzyme, becoming active upon intramolecular cleavage. The activation process changes the conformation of a long fragment at the C-terminus of the α subunit, for which no full-length structural information exists and whose function is poorly understood. We present a cloning strategy to generate a circularly permuted form of Taspase1 to determine the crystallographic structure of active Taspase1. We discovered that this region forms a long helix and is indispensable for the catalytic activity of Taspase1. Our study highlights the importance of this element for the enzymatic activity of Ntn-hydrolases, suggesting that it could be a potential target for the design of inhibitors with potential to be developed into anticancer therapeutics.
Collapse
Affiliation(s)
- Nirupa Nagaratnam
- Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Silvia L Delker
- Beryllium Discovery Corp., with present address of UCB Biosciences, Bedford, MA 01730, USA
| | - Rebecca Jernigan
- Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Thomas E Edwards
- Beryllium Discovery Corp., with present address of UCB Biosciences, Bedford, MA 01730, USA
| | - Janey Snider
- Division of Biosciences, SRI International Menlo Park, Menlo Park, CA 94025, USA
| | - Darren Thifault
- Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA
| | - Dewight Williams
- Eyring Materials Center, Arizona State University, Tempe, AZ 85257, USA
| | - Brent L Nannenga
- Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; Chemical Engineering, School for Engineering of Matter, Transport, and Energy, Arizona State University, Tempe, AZ 85287, USA
| | - Mary Stofega
- Division of Biosciences, SRI International Menlo Park, Menlo Park, CA 94025, USA
| | - Lidia Sambucetti
- Division of Biosciences, SRI International Menlo Park, Menlo Park, CA 94025, USA
| | - James J Hsieh
- Molecular Oncology, Division of Oncology, Department of Medicine, Washington University, St. Louis, MO 63110, USA
| | - Andrew J Flint
- Frederick National Lab for Cancer Research, National Cancer Institute, National Institutes of Health, Frederick, MD 21702, USA
| | - Petra Fromme
- Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA.
| | - Jose M Martin-Garcia
- Center for Applied Structural Discovery, Biodesign Institute, Arizona State University, Tempe, AZ 85287, USA; Department of Crystallography and Structural Biology, Institute of Physical-Chemistry "Rocasolano", Spanish National Research Council (CSIC), Madrid 28006, Spain.
| |
Collapse
|
14
|
Ajewole E, Santamaria‐Kisiel L, Pajak A, Jaskolski M, Marsolais F. Structural basis of potassium activation in plant asparaginases. FEBS J 2018; 285:1528-1539. [DOI: 10.1111/febs.14428] [Citation(s) in RCA: 11] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/26/2017] [Revised: 02/07/2018] [Accepted: 02/27/2018] [Indexed: 11/30/2022]
Affiliation(s)
- Ebenezer Ajewole
- Department of Biology University of Western Ontario London Canada
- London Research and Development Centre Agriculture and Agri‐Food Canada London Canada
| | | | - Agnieszka Pajak
- London Research and Development Centre Agriculture and Agri‐Food Canada London Canada
| | - Mariusz Jaskolski
- Center for Biocrystallographic Research Institute of Bioorganic Chemistry Polish Academy of Sciences Poznan Poland
- Department of Crystallography Faculty of Chemistry A. Mickiewicz University Poznan Poland
| | - Frédéric Marsolais
- Department of Biology University of Western Ontario London Canada
- London Research and Development Centre Agriculture and Agri‐Food Canada London Canada
| |
Collapse
|
15
|
García-Calderón M, Pérez-Delgado CM, Credali A, Vega JM, Betti M, Márquez AJ. Genes for asparagine metabolism in Lotus japonicus: differential expression and interconnection with photorespiration. BMC Genomics 2017; 18:781. [PMID: 29025409 PMCID: PMC5639745 DOI: 10.1186/s12864-017-4200-x] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/22/2016] [Accepted: 10/08/2017] [Indexed: 12/21/2022] Open
Abstract
BACKGROUND Asparagine is a very important nitrogen transport and storage compound in plants due to its high nitrogen/carbon ratio and stability. Asparagine intracellular concentration depends on a balance between asparagine biosynthesis and degradation. The main enzymes involved in asparagine metabolism are asparagine synthetase (ASN), asparaginase (NSE) and serine-glyoxylate aminotransferase (SGAT). The study of the genes encoding for these enzymes in the model legume Lotus japonicus is of particular interest since it has been proposed that asparagine is the principal molecule used to transport reduced nitrogen within the plant in most temperate legumes. RESULTS A differential expression of genes encoding for several enzymes involved in asparagine metabolism was detected in L. japonicus. ASN is encoded by three genes, LjASN1 was the most highly expressed in mature leaves while LjASN2 expression was negligible and LjASN3 showed a low expression in this organ, suggesting that LjASN1 is the main gene responsible for asparagine synthesis in mature leaves. In young leaves, LjASN3 was the only ASN gene expressed although at low levels, while all the three genes encoding for NSE were highly expressed, especially LjNSE1. In nodules, LjASN2 and LjNSE2 were the most highly expressed genes, suggesting an important role for these genes in this organ. Several lines of evidence support the connection between asparagine metabolic genes and photorespiration in L. japonicus: a) a mutant plant deficient in LjNSE1 showed a dramatic decrease in the expression of the two genes encoding for SGAT; b) expression of the genes involved in asparagine metabolism is altered in a photorespiratory mutant lacking plastidic glutamine synthetase; c) a clustering analysis indicated a similar pattern of expression among several genes involved in photorespiratory and asparagine metabolism, indicating a clear link between LjASN1 and LjSGAT genes and photorespiration. CONCLUSIONS The results obtained in this paper indicate the existence of a differential expression of asparagine metabolic genes in L. japonicus and point out the crucial relevance of particular genes in different organs. Moreover, the data presented establish clear links between asparagine and photorespiratory metabolic genes in this plant.
Collapse
Affiliation(s)
- Margarita García-Calderón
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, C/ Profesor García González, 1, 41012, Sevilla, Spain
| | - Carmen M Pérez-Delgado
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, C/ Profesor García González, 1, 41012, Sevilla, Spain
| | - Alfredo Credali
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, C/ Profesor García González, 1, 41012, Sevilla, Spain
| | - José M Vega
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, C/ Profesor García González, 1, 41012, Sevilla, Spain
| | - Marco Betti
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, C/ Profesor García González, 1, 41012, Sevilla, Spain.
| | - Antonio J Márquez
- Departamento de Bioquímica Vegetal y Biología Molecular, Facultad de Química, C/ Profesor García González, 1, 41012, Sevilla, Spain
| |
Collapse
|
16
|
Van Kerckhoven SH, de la Torre FN, Cañas RA, Avila C, Cantón FR, Cánovas FM. Characterization of Three L-Asparaginases from Maritime Pine ( Pinus pinaster Ait.). FRONTIERS IN PLANT SCIENCE 2017; 8:1075. [PMID: 28690619 PMCID: PMC5481357 DOI: 10.3389/fpls.2017.01075] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/17/2017] [Accepted: 06/06/2017] [Indexed: 05/15/2023]
Abstract
Asparaginases (ASPG, EC 3.5.1.1) catalyze the hydrolysis of the amide group of L-asparagine producing L-aspartate and ammonium. Three ASPG, PpASPG1, PpASPG2, and PpASPG3, have been identified in the transcriptome of maritime pine (Pinus pinaster Ait.) that were transiently expressed in Nicotiana benthamiana by agroinfection. The three recombinant proteins were processed in planta to active enzymes and it was found that all mature forms exhibited double activity asparaginase/isoaspartyl dipeptidase but only PpASPG1 was able to catalyze efficiently L-asparagine hydrolysis. PpASPG1 contains a variable region of 77 amino acids that is critical for proteolytic processing of the precursor and is retained in the mature enzyme. Furthermore, the functional analysis of deletion mutants demonstrated that this protein fragment is required for specific recognition of the substrate and favors enzyme stability. Potassium has a limited effect on the activation of maritime pine ASPG what is consistent with the lack of a critical residue essential for interaction of cation. Taken together, the results presented here highlight the specific features of ASPG from conifers when compared to the enzymes from angiosperms.
Collapse
|
17
|
Sun Z, Li D, Liu P, Wang W, Ji K, Huang Y, Cui Z. A novel l-asparaginase from Aquabacterium sp. A7-Y with self-cleavage activation. Antonie Van Leeuwenhoek 2015; 109:121-30. [DOI: 10.1007/s10482-015-0614-0] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/04/2015] [Accepted: 10/26/2015] [Indexed: 11/24/2022]
|
18
|
Pandurangan S, Pajak A, Rintoul T, Beyaert R, Hernández-Sebastià C, Brown DCW, Marsolais F. Soybean seeds overexpressing asparaginase exhibit reduced nitrogen concentration. PHYSIOLOGIA PLANTARUM 2015; 155:126-137. [PMID: 25898948 DOI: 10.1111/ppl.12341] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Subscribe] [Scholar Register] [Received: 11/15/2013] [Revised: 03/18/2015] [Accepted: 03/28/2015] [Indexed: 06/04/2023]
Abstract
In soybean seed, a correlation has been observed between the concentration of free asparagine at mid-maturation and protein concentration at maturity. In this study, a Phaseolus vulgaris K+ -dependent asparaginase cDNA, PvAspG2, was expressed in transgenic soybean under the control of the embryo specific promoter of the β-subunit of β-conglycinin. Three lines were isolated having high expression of the transgene at the transcript, protein and enzyme activity levels at mid-maturation, with a 20- to 40-fold higher asparaginase activity in embryo than a control line expressing β-glucuronidase. Increased asparaginase activity was associated with a reduction in free asparagine levels as a percentage of total free amino acids, by 11-18%, and an increase in free aspartic acid levels, by 25-60%. Two of the lines had reduced nitrogen concentration in mature seed as determined by nitrogen analysis, by 9-13%. Their levels of extractible globulins were reduced by 11-30%. This was accompanied by an increase in oil concentration, by 5-8%. The lack of change in nitrogen concentration in the third transgenic line was correlated with an increase in free glutamic acid levels by approximately 40% at mid-maturation.
Collapse
Affiliation(s)
- Sudhakar Pandurangan
- Department of Biology, University of Western Ontario, London, Ontario, N6A 5B7, Canada
- Genomics and Biotechnology, Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| | - Agnieszka Pajak
- Genomics and Biotechnology, Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| | - Tara Rintoul
- Genomics and Biotechnology, Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| | - Ronald Beyaert
- Genomics and Biotechnology, Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| | - Cinta Hernández-Sebastià
- Genomics and Biotechnology, Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| | - Daniel C W Brown
- Genomics and Biotechnology, Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| | - Frédéric Marsolais
- Department of Biology, University of Western Ontario, London, Ontario, N6A 5B7, Canada
- Genomics and Biotechnology, Southern Crop Protection and Food Research Centre, Agriculture and Agri-Food Canada, London, Ontario, N5V 4T3, Canada
| |
Collapse
|
19
|
Borek D, Kozak M, Pei J, Jaskolski M. Crystal structure of active site mutant of antileukemicl-asparaginase reveals conserved zinc-binding site. FEBS J 2014; 281:4097-111. [DOI: 10.1111/febs.12906] [Citation(s) in RCA: 22] [Impact Index Per Article: 2.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/10/2014] [Revised: 06/16/2014] [Accepted: 07/01/2014] [Indexed: 02/03/2023]
Affiliation(s)
- Dominika Borek
- Department of Crystallography; Faculty of Chemistry; A. Mickiewicz University; Poznan Poland
| | - Maciej Kozak
- Department of Crystallography; Faculty of Chemistry; A. Mickiewicz University; Poznan Poland
- Department of Macromolecular Physics; Faculty of Physics; A. Mickiewicz University; Poznan Poland
| | - Jimin Pei
- Howard Hughes Medical Institute; University of Texas Southwestern Medical Center; Dallas TX USA
| | - Mariusz Jaskolski
- Department of Crystallography; Faculty of Chemistry; A. Mickiewicz University; Poznan Poland
- Center for Biocrystallographic Research; Institute of Bioorganic Chemistry; Polish Academy of Sciences; Poznan Poland
| |
Collapse
|