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Agaras BC, Grossi CEM, Ulloa RM. Unveiling the Secrets of Calcium-Dependent Proteins in Plant Growth-Promoting Rhizobacteria: An Abundance of Discoveries Awaits. PLANTS (BASEL, SWITZERLAND) 2023; 12:3398. [PMID: 37836138 PMCID: PMC10574481 DOI: 10.3390/plants12193398] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/05/2023] [Revised: 09/20/2023] [Accepted: 09/22/2023] [Indexed: 10/15/2023]
Abstract
The role of Calcium ions (Ca2+) is extensively documented and comprehensively understood in eukaryotic organisms. Nevertheless, emerging insights, primarily derived from studies on human pathogenic bacteria, suggest that this ion also plays a pivotal role in prokaryotes. In this review, our primary focus will be on unraveling the intricate Ca2+ toolkit within prokaryotic organisms, with particular emphasis on its implications for plant growth-promoting rhizobacteria (PGPR). We undertook an in silico exploration to pinpoint and identify some of the proteins described in the existing literature, including prokaryotic Ca2+ channels, pumps, and exchangers that are responsible for regulating intracellular Calcium concentration ([Ca2+]i), along with the Calcium-binding proteins (CaBPs) that play a pivotal role in sensing and transducing this essential cation. These investigations were conducted in four distinct PGPR strains: Pseudomonas chlororaphis subsp. aurantiaca SMMP3, P. donghuensis SVBP6, Pseudomonas sp. BP01, and Methylobacterium sp. 2A, which have been isolated and characterized within our research laboratories. We also present preliminary experimental data to evaluate the influence of exogenous Ca2+ concentrations ([Ca2+]ex) on the growth dynamics of these strains.
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Affiliation(s)
- Betina Cecilia Agaras
- Laboratory of Physiology and Genetics of Plant Probiotic Bacteria (LFGBBP), Centre of Biochemistry and Microbiology of Soils, National University of Quilmes, Bernal B1876BXD, Argentina
- National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina;
| | - Cecilia Eugenia María Grossi
- National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina;
- Laboratory of Plant Signal Transduction, Institute of Genetic Engineering and Molecular Biology (INGEBI), National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina
| | - Rita María Ulloa
- National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina;
- Laboratory of Plant Signal Transduction, Institute of Genetic Engineering and Molecular Biology (INGEBI), National Scientific and Technical Research Council (CONICET), Buenos Aires C1425FQB, Argentina
- Biochemistry Department, Faculty of Exact and Natural Sciences, University of Buenos Aires (FCEN-UBA), Buenos Aires C1428EGA, Argentina
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Wu H, Tian X, Dong Z, Zhang Y, Huang L, Liu X, Jin P, Lu F, Wang Z. Engineering of Bacillus amyloliquefaciens
α-Amylase with Improved Calcium Independence and Catalytic Efficiency by Error-Prone PCR. STARCH-STARKE 2017. [DOI: 10.1002/star.201700175] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
Affiliation(s)
- Haiyang Wu
- H. Wu, X. Tian, Dr. Z. Dong, Prof. X. Liu, Dr. P. Jin, Prof. Z. Wang; Department of Biological Chemical Engineering; College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin 300457 China
- H. Wu, X. Tian, Y. Zhang, L. Huang, Prof. F. Lu, Prof. Z. Wang; College of Biotechnology; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Xiaojing Tian
- H. Wu, X. Tian, Dr. Z. Dong, Prof. X. Liu, Dr. P. Jin, Prof. Z. Wang; Department of Biological Chemical Engineering; College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin 300457 China
- H. Wu, X. Tian, Y. Zhang, L. Huang, Prof. F. Lu, Prof. Z. Wang; College of Biotechnology; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Zixing Dong
- H. Wu, X. Tian, Dr. Z. Dong, Prof. X. Liu, Dr. P. Jin, Prof. Z. Wang; Department of Biological Chemical Engineering; College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Yongjie Zhang
- H. Wu, X. Tian, Y. Zhang, L. Huang, Prof. F. Lu, Prof. Z. Wang; College of Biotechnology; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Lei Huang
- H. Wu, X. Tian, Y. Zhang, L. Huang, Prof. F. Lu, Prof. Z. Wang; College of Biotechnology; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Xiaoguang Liu
- H. Wu, X. Tian, Dr. Z. Dong, Prof. X. Liu, Dr. P. Jin, Prof. Z. Wang; Department of Biological Chemical Engineering; College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Peng Jin
- H. Wu, X. Tian, Dr. Z. Dong, Prof. X. Liu, Dr. P. Jin, Prof. Z. Wang; Department of Biological Chemical Engineering; College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Fuping Lu
- H. Wu, X. Tian, Y. Zhang, L. Huang, Prof. F. Lu, Prof. Z. Wang; College of Biotechnology; Tianjin University of Science and Technology; Tianjin 300457 China
| | - Zhengxiang Wang
- H. Wu, X. Tian, Dr. Z. Dong, Prof. X. Liu, Dr. P. Jin, Prof. Z. Wang; Department of Biological Chemical Engineering; College of Chemical Engineering and Materials Science; Tianjin University of Science and Technology; Tianjin 300457 China
- H. Wu, X. Tian, Y. Zhang, L. Huang, Prof. F. Lu, Prof. Z. Wang; College of Biotechnology; Tianjin University of Science and Technology; Tianjin 300457 China
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Calcium binding proteins and calcium signaling in prokaryotes. Cell Calcium 2014; 57:151-65. [PMID: 25555683 DOI: 10.1016/j.ceca.2014.12.006] [Citation(s) in RCA: 136] [Impact Index Per Article: 13.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/01/2014] [Revised: 12/08/2014] [Accepted: 12/09/2014] [Indexed: 11/20/2022]
Abstract
With the continued increase of genomic information and computational analyses during the recent years, the number of newly discovered calcium binding proteins (CaBPs) in prokaryotic organisms has increased dramatically. These proteins contain sequences that closely resemble a variety of eukaryotic calcium (Ca(2+)) binding motifs including the canonical and pseudo EF-hand motifs, Ca(2+)-binding β-roll, Greek key motif and a novel putative Ca(2+)-binding domain, called the Big domain. Prokaryotic CaBPs have been implicated in diverse cellular activities such as division, development, motility, homeostasis, stress response, secretion, transport, signaling and host-pathogen interactions. However, the majority of these proteins are hypothetical, and only few of them have been studied functionally. The finding of many diverse CaBPs in prokaryotic genomes opens an exciting area of research to explore and define the role of Ca(2+) in organisms other than eukaryotes. This review presents the most recent developments in the field of CaBPs and novel advancements in the role of Ca(2+) in prokaryotes.
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Potvin-Fournier K, Lefèvre T, Picard-Lafond A, Valois-Paillard G, Cantin L, Salesse C, Auger M. The thermal stability of recoverin depends on calcium binding and its myristoyl moiety as revealed by infrared spectroscopy. Biochemistry 2013; 53:48-56. [PMID: 24359287 DOI: 10.1021/bi401336g] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
To evaluate the structural stability of recoverin, a member of the neuronal calcium sensor family, the effect of temperature, myristoylation, and calcium:protein molar ratio on its secondary structure has been studied by transmission infrared spectroscopy. On the basis of the data, the protein predominantly adopts α-helical structures (∼50-55%) with turns, unordered structures, and β-sheets at 25 °C. The data show no significant impact of the presence of calcium and myristoylation on secondary structure. It is found that, in the absence of calcium, recoverin denatures and self-aggregates while being heated, with the formation of intermolecular antiparallel β-sheets. The nonmyristoylated protein (Rec-nMyr) exhibits a lower temperature threshold of aggregation and a higher intermolecular β-sheet content at 65 °C than the myristoylated protein (Rec-Myr). The former thus appears to be less thermally stable than the latter. In the presence of excess calcium ions (calcium:protein ratio of 10), the protein is thermally stable up to 65 °C with no significant conformational change, the presence of the myristoyl chain having no effect on the thermal stability of recoverin under these conditions. A decrease in the thermal stability of recoverin is observed as the calcium:protein molar ratio decreases, with Rec-nMyr being less stable than Rec-Myr. The data overall suggest that a minimal number of coordinated calcium ions is necessary to fully stabilize the structure of recoverin and that, when bound to the membrane, i.e., when the myristoyl chain protrudes from the interior pocket, recoverin should be more stable than in a Ca-free solution, i.e., when the myristoyl chain is sequestered in the interior.
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Affiliation(s)
- Kim Potvin-Fournier
- Département de chimie, Regroupement québécois de recherche sur la fonction, la structure et l'ingénierie des protéines (PROTEO), Centre de recherche sur les matériaux avancés (CERMA), Université Laval , Pavillon Alexandre-Vachon, 1045 avenue de la médecine, Québec, Québec G1V 0A6, Canada
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Ghollasi M, Ghanbari-Safari M, Khajeh K. Improvement of thermal stability of a mutagenised α-amylase by manipulation of the calcium-binding site. Enzyme Microb Technol 2013; 53:406-13. [DOI: 10.1016/j.enzmictec.2013.09.001] [Citation(s) in RCA: 18] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/31/2012] [Revised: 08/30/2013] [Accepted: 09/03/2013] [Indexed: 10/26/2022]
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