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Tsuboyama S, Okumura T, Attri P, Koga K, Shiratani M, Kuchitsu K. Growth control of Marchantia polymorpha gemmae using nonthermal plasma irradiation. Sci Rep 2024; 14:3172. [PMID: 38326376 PMCID: PMC10850213 DOI: 10.1038/s41598-024-53104-1] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2023] [Accepted: 01/27/2024] [Indexed: 02/09/2024] Open
Abstract
Several studies have documented that treatment by cold atmospheric pressure plasma (CAPP) on plants foster seed germination and growth in recent years. However, the molecular processes that underlie the action of CAPP on the seeds and plants remain mostly enigmatic. We here introduce gemmae of Marchantia polymorpha, a basal liverwort, as a novel model plant material suitable for CAPP research. Treating the gemmae with CAPP for a constant time interval at low power resulted in consistent growth enhancement, while growth inhibition at higher power in a dose-dependent manner. These results distinctly demonstrate that CAPP irradiation can positively and negatively regulate plant growth depending on the plasma intensity of irradiation, offering a suitable experimental system for understanding the molecular mechanisms underlying the action of CAPP in plants.
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Affiliation(s)
- Shoko Tsuboyama
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan
| | - Takamasa Okumura
- Faculty of Information Science and Electrical Engineering, Kyushu University, 744 Motoka, Fukuoka City, Fukuoka, 819-0395, Japan
| | - Pankaj Attri
- Center of Plasma Nano-Interface Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Kazunori Koga
- Faculty of Information Science and Electrical Engineering, Kyushu University, 744 Motoka, Fukuoka City, Fukuoka, 819-0395, Japan.
| | - Masaharu Shiratani
- Faculty of Information Science and Electrical Engineering, Kyushu University, 744 Motoka, Fukuoka City, Fukuoka, 819-0395, Japan
- Center of Plasma Nano-Interface Engineering, Kyushu University, Fukuoka, 819-0395, Japan
| | - Kazuyuki Kuchitsu
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510, Japan.
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Hashimoto T, Hashimoto K, Shindo H, Tsuboyama S, Miyakawa T, Tanokura M, Kuchitsu K. Enhanced Ca 2+ binding to EF-hands through phosphorylation of conserved serine residues activates MpRBOHB and chitin-triggered ROS production. Physiol Plant 2023; 175:e14101. [PMID: 38148249 DOI: 10.1111/ppl.14101] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/26/2023] [Accepted: 11/14/2023] [Indexed: 12/28/2023]
Abstract
NADPH oxidases/RBOHs catalyze apoplastic ROS production and act as key signaling nodes, integrating multiple signal transduction pathways regulating plant development and stress responses. Although RBOHs have been suggested to be activated by Ca2+ binding and phosphorylation by various protein kinases, a mechanism linking Ca2+ binding and phosphorylation in the activity regulation remained elusive. Chitin-triggered ROS production required cytosolic Ca2+ elevation and Ca2+ binding to MpRBOHB in a liverwort Marchantia polymorpha. Heterologous expression analysis of truncated variants revealed that a segment of the N-terminal cytosolic region highly conserved among land plant RBOHs encompassing the two EF-hand motifs is essential for the activation of MpRBOHB. Within the conserved regulatory domain, we have identified two Ser residues whose phosphorylation is critical for the activation in planta. Isothermal titration calorimetry analyses revealed that phosphorylation of the two Ser residues increased the Ca2+ binding affinity of MpRBOHB, while Ca2+ binding is indispensable for the activation, even if the two Ser residues are phosphorylated. Our findings shed light on a mechanism through which phosphorylation potentiates the Ca2+ -dependent activation of MpRBOHB, emphasizing the pivotal role of Ca2+ binding in mediating the Ca2+ and phosphorylation-driven activation of MpRBOHB, which is likely to represent a fundamental mechanism conserved among land plant RBOHs.
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Affiliation(s)
- Takafumi Hashimoto
- Department of Applied Biological Science, Tokyo University of Science, Chiba, Japan
| | - Kenji Hashimoto
- Department of Applied Biological Science, Tokyo University of Science, Chiba, Japan
| | - Hiroki Shindo
- Department of Applied Biological Science, Tokyo University of Science, Chiba, Japan
| | - Shoko Tsuboyama
- Department of Applied Biological Science, Tokyo University of Science, Chiba, Japan
| | - Takuya Miyakawa
- Graduate School of Biostudies, Kyoto University, Kyoto, Japan
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Masaru Tanokura
- Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, Tokyo, Japan
| | - Kazuyuki Kuchitsu
- Department of Applied Biological Science, Tokyo University of Science, Chiba, Japan
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Hashimoto K, Koselski M, Tsuboyama S, Dziubinska H, Trębacz K, Kuchitsu K. Functional Analyses of the Two Distinctive Types of Two-Pore Channels and the Slow Vacuolar Channel in Marchantia polymorpha. Plant Cell Physiol 2022; 63:163-175. [PMID: 34936705 DOI: 10.1093/pcp/pcab176] [Citation(s) in RCA: 5] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 09/06/2021] [Revised: 11/23/2021] [Accepted: 12/22/2021] [Indexed: 06/14/2023]
Abstract
The two-pore channel (TPC) family is widely conserved in eukaryotes. Many vascular plants, including Arabidopsis and rice, possess a single TPC gene which functions as a slow vacuolar (SV) channel-voltage-dependent cation-permeable channel located in the vacuolar membrane (tonoplast). On the other hand, a liverwort Marchantia polymorpha genome encodes three TPC homologs: MpTPC1 is similar to TPCs in vascular plants (type 1 TPC), while MpTPC2 and MpTPC3 are classified into a distinctive group (type 2 TPC). Phylogenetic analysis suggested that the type 2 TPC emerged before the land colonization in plant evolution and was lost in vascular plants and hornworts. All of the three MpTPCs were shown to be localized at the tonoplast. We generated knockout mutants of tpc1, tpc2, tpc3 and tpc2 tpc3 double mutant by clustered regularly interspaced short palindromic repeats/Cas9 genome editing and performed patch-clamp analyses of isolated vacuoles. The SV channel activity was abolished in the Mptpc1 loss-of-function mutant (Mptpc1-1KO), while Mptpc2-1KO, Mptpc3-1KO and Mptpc2-2/tpc3-2KO double mutant exhibited similar activity to the wild type, indicating that MpTPC1 (type 1) is solely responsible for the SV channel activity. Activators of mammalian TPCs, phosphatidylinositol-3,5-bisphosphate and nicotinic acid adenine dinucleotide phosphate, did not affect the ion channel activity of any MpTPCs. These results indicate that the type 1 TPCs, which are well conserved in all land plant species, encode the SV channel, while the type 2 TPCs likely encode other tonoplast cation channel(s) distinct from the SV channel and animal TPCs.
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Affiliation(s)
| | - Mateusz Koselski
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland
| | - Shoko Tsuboyama
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510 Japan
| | - Halina Dziubinska
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland
| | - Kazimierz Trębacz
- Department of Plant Physiology and Biophysics, Institute of Biological Sciences, Faculty of Biology and Biotechnology, Maria Curie-Sklodowska University, Akademicka 19, Lublin 20-033, Poland
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510 Japan
| | - Kazuyuki Kuchitsu
- Department of Applied Biological Science, Tokyo University of Science, 2641 Yamazaki, Noda, Chiba, 278-8510 Japan
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Yong L, Tsuboyama S, Kitamura R, Kurokura T, Suzuki T, Kodama Y. Chloroplast relocation movement in the liverwort Apopellia endiviifolia. Physiol Plant 2021; 173:775-787. [PMID: 34102708 PMCID: PMC8597172 DOI: 10.1111/ppl.13473] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/07/2021] [Revised: 05/11/2021] [Accepted: 05/31/2021] [Indexed: 05/03/2023]
Abstract
Changes in the subcellular localisation of chloroplasts help optimise photosynthetic activity under different environmental conditions. In many plants, this movement is mediated by the blue-light photoreceptor phototropin. A model organism with simple phototropin signalling that allows clear observation of chloroplasts would facilitate the study of chloroplast relocation movement. Here, we examined this process in the simple thalloid liverwort Apopellia endiviifolia. Transverse sections of the thallus tissue showed uniformly developed chloroplasts and no air chambers; these characteristics enable clear observation of chloroplasts and analysis of their movements under a fluorescence stereomicroscope. At 22°C, the chloroplasts moved to the anticlinal walls of cells next to the neighbouring cells in the dark (dark-positioning response), whereas they moved towards weak light (accumulation response) and away from strong light (avoidance response). When the temperature was reduced to 5°C, the chloroplasts moved away from weak light (cold-avoidance response). Hence, both light- and temperature-dependent chloroplast relocation movements occur in A. endiviifolia. Notably, the accumulation, avoidance and cold-avoidance responses were induced under blue-light but not under red-light. These results suggest that phototropin is responsible for chloroplast relocation movement in A. endiviifolia and that the characteristics are similar to those in the model liverwort Marchantia polymorpha. RNA sequencing and Southern blot analysis identified a single copy of the PHOTOTROPIN gene in A. endiviifolia, indicating that a simple phototropin signalling pathway functions in A. endiviifolia. We conclude that A. endiviifolia has great potential as a model system for elucidating the mechanisms of chloroplast relocation movement.
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Affiliation(s)
- Lee‐Kien Yong
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of AgricultureUtsunomiya UniversityTochigiJapan
- United Graduate School of Agricultural ScienceTokyo University of Agriculture and TechnologyTokyoJapan
| | - Shoko Tsuboyama
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- United Graduate School of Agricultural ScienceTokyo University of Agriculture and TechnologyTokyoJapan
- Present address:
Department of Applied Biological ScienceTokyo University of ScienceChibaJapan
| | - Rika Kitamura
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
| | - Takeshi Kurokura
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of AgricultureUtsunomiya UniversityTochigiJapan
- Faculty of AgricultureUtsunomiya UniversityTochigiJapan
| | - Tomohiro Suzuki
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of AgricultureUtsunomiya UniversityTochigiJapan
- United Graduate School of Agricultural ScienceTokyo University of Agriculture and TechnologyTokyoJapan
| | - Yutaka Kodama
- Center for Bioscience Research and EducationUtsunomiya UniversityTochigiJapan
- Graduate School of AgricultureUtsunomiya UniversityTochigiJapan
- United Graduate School of Agricultural ScienceTokyo University of Agriculture and TechnologyTokyoJapan
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Tsuboyama S, Kodama Y. Highly efficient G-AgarTrap-mediated transformation of the Marchantia polymorpha model strains Tak-1 and Tak-2. Plant Biotechnol (Tokyo) 2018; 35:399-403. [PMID: 31892829 PMCID: PMC6905214 DOI: 10.5511/plantbiotechnology.18.0917a] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 08/16/2018] [Accepted: 09/17/2018] [Indexed: 05/13/2023]
Abstract
The liverwort Marchantia polymorpha L. is an important model species for investigating land plant evolution. Effective genetic transformation techniques are crucial for plant molecular biology and simplified or improved techniques for specific cultivars or strains can accelerate research. Over the past several years, we developed a simple Agrobacterium-mediated transformation technique for M. polymorpha named AgarTrap (Agar-utilized transformation with pouring solutions). AgarTrap is an easy technique that involves pouring the appropriate solutions onto plant materials on a single solid plate of medium. We recently improved AgarTrap using gemmalings (G-AgarTrap) of the M. polymorpha female model strain BC3-38 and achieved a transformation efficiency of nearly 100%. Based on this improved technique, in the current study, we adopted two factors (sealing the Petri dish with Parafilm and dark treatment during co-cultivation) and optimized two factors (Agrobacterium strain and pre-culture period) of the improved G-AgarTrap for other model strains of M. polymorpha, the male strain Takaragaike-1 (Tak-1) and the female strain Takaragaike-2 (Tak-2). After optimization, the transformation efficiency of Tak-1 using G-AgarTrap was as high as 55% compared to approximately 30% using the previous protocol. Furthermore, using Tak-2, we achieved a transformation efficiency of nearly 100%. Our improved G-AgarTrap technique for Tak-1 and Tak-2 represents a promising tool for promoting the study of Marchantia.
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Affiliation(s)
- Shoko Tsuboyama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
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Tsuboyama S, Nonaka S, Ezura H, Kodama Y. Improved G-AgarTrap: A highly efficient transformation method for intact gemmalings of the liverwort Marchantia polymorpha. Sci Rep 2018; 8:10800. [PMID: 30018332 PMCID: PMC6050340 DOI: 10.1038/s41598-018-28947-0] [Citation(s) in RCA: 25] [Impact Index Per Article: 4.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/05/2017] [Accepted: 07/03/2018] [Indexed: 11/08/2022] Open
Abstract
Liverworts are key species for studies of plant evolution, occupying a basal position among the land plants. Marchantia polymorpha has emerged as a highly studied model liverwort, and many relevant techniques, including genetic transformation, have been established for this species. Agrobacterium-mediated transformation is widely used in many plant species because of its low cost. Recently, we developed a simplified Agrobacterium-mediated method for transforming M. polymorpha, known as AgarTrap (agar-utilized transformation with pouring solutions). The AgarTrap procedure, which involves culturing the liverwort tissue in various solutions on a single solid medium, yields up to a hundred independent transformants. AgarTrap is a simple procedure, requiring minimal expertise, cost, and time. Here, we investigated four factors that influence AgarTrap transformation efficiency: (1) humidity, (2) surfactant in the transformation buffer, (3) Agrobacterium strain, and (4) light/dark condition. We adapted the AgarTrap protocol for transforming intact gemmalings, achieving an exceptionally high transformation efficiency of 97%. The improved AgarTrap method will enhance the molecular biological study of M. polymorpha. Furthermore, this method provides new possibilities for improving transformation techniques for a variety of plant species.
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Affiliation(s)
- Shoko Tsuboyama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, 321-8505, Japan
| | - Satoko Nonaka
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Ibaraki, 305-8572, Japan
| | - Hiroshi Ezura
- Tsukuba Plant Innovation Research Center, University of Tsukuba, Ibaraki, 305-8572, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi, 321-8505, Japan.
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Tsuboyama S, Kodama Y. AgarTrap Protocols on your Benchtop: Simple Methods for Agrobacterium-mediated Genetic Transformation of the Liverwort Marchantia polymorpha. Plant Biotechnol (Tokyo) 2018; 35:93-99. [PMID: 31819711 PMCID: PMC6879393 DOI: 10.5511/plantbiotechnology.18.0312b] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/13/2023]
Abstract
Agrobacterium-mediated genetic transformation is a powerful technique in plant biology. We recently developed a simplified Agrobacterium-mediated genetic transformation method for the liverwort Marchantia polymorpha, named AgarTrap (agar-utilized transformation with pouring solutions). AgarTrap is easy to perform; all procedures can be completed within a week using a single plate of solid medium, and basic operations involve simply pouring the appropriate solutions onto the solid medium. Thus far, we have developed three types of AgarTrap methods (S-AgarTrap, G-AgarTrap, and T-AgarTrap) using three different M. polymorpha tissues: sporelings, intact gemmalings, and mature thallus pieces, respectively. Each AgarTrap method can be used to transform tissues at high efficiency, thereby producing sufficient numbers of transformants for study. The ease and efficiency of these AgarTrap methods will likely prompt widespread molecular biological analyses of M. polymorpha. In this review, we describe the basic characteristics of the three AgarTrap methods and present the detailed protocols used in our laboratory.
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Affiliation(s)
- Shoko Tsuboyama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
| | - Yutaka Kodama
- Center for Bioscience Research and Education, Utsunomiya University, Tochigi 321-8505, Japan
- E-mail: Tel: +81-28-649-8154 Fax: +81-28-649-8651
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Ito M, Campbell R, Kan A, Miyamoto N, Tsuboyama S, Kurokawa Y. THE POSSIBILITY OF COUPLES LIFE STORY PROJECT REDUCING CAREGIVERS BURDEN. Innov Aging 2017. [DOI: 10.1093/geroni/igx004.1248] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/13/2022] Open
Affiliation(s)
- M. Ito
- Human Care Research Team, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Tokyo, Japan,
| | | | - A. Kan
- Human Care Research Team, Tokyo Metropolitan Institute of Gerontology, Itabashi-ku, Tokyo, Japan,
| | - N. Miyamoto
- Keiseikai institute of Gerontology, Tokyo, Japan,
| | - S. Tsuboyama
- Keiseikai institute of Gerontology, Tokyo, Japan,
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Tsuboyama S, Kodama Y. AgarTrap: A Simplified Agrobacterium-Mediated Transformation Method for Sporelings of the Liverwort Marchantia polymorpha L. ACTA ACUST UNITED AC 2013; 55:229-36. [DOI: 10.1093/pcp/pct168] [Citation(s) in RCA: 37] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/23/2023]
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Abstract
A study was carried out, with use of the Cambridge Structural Database, to examine the role of the CH/pi interaction in the conformation of peptides. A number of short intramolecular CH/pi distances have been shown in the crystal structure of peptides bearing at least an aromatic residue in the sequence. The molecular structure in the crystal was inspected individually to know whether the conformation is merely a consequence of the so-called packing forces, or the CH/pi interaction plays a role. It has been demonstrated that the CH/pi interaction constitutes one of the key factors in controlling the conformation of peptides.
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Affiliation(s)
- Y Umezawa
- Institute of Microbial Chemistry, Tokyo, Japan
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Tsuboyama S, Tsuboyama K, Sakurai T. Structure of [Co(C4H5NO4)(C16H36N4)]ClO4.2.5H2O. Corrigendum. Acta Crystallogr C 1990. [DOI: 10.1107/s0108270189010863] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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Tsuboyama S, Matsudo M, Tsuboyama K, Sakurai T. Structures of [(R)- and (S)-prolinato](optically active cyclen)cobalt(III) complexes. Acta Crystallogr C 1989. [DOI: 10.1107/s0108270188014830] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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15
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Tsuboyama S, Tsuboyama K, Sakurai T. A (2-amino-2-methylpropanedioato)(optically active cyclen)cobalt(III) complex. Acta Crystallogr C 1989. [DOI: 10.1107/s0108270188012673] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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Tsuboyama S, Sakurai T, Kobayashi K, Azuma N, Kajikawa Y, Ishizu K. pH dependence of binding site in complexation of CuII with picolinamide groups: crystallographic studies of mono- and binuclear complexes with N,N'-dipicolinoyl-1,3-propanediamine. Acta Crystallogr B Struct Sci 1984. [DOI: 10.1107/s0108768184002494] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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17
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Tsuboyama S, Kobayashi K, Sakurai T, Tsuboyama K. Structural studies on metal complexes of chiral cyclen. V. Chloro[(2RS,5RS,8RS,11SR)-1,4,7,10-tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane]copper(II) dichlorocuprate(I) ethanol solvate, [CuCl(C44H60N4)][CuCl2].3C2H6O. Acta Crystallogr C 1984. [DOI: 10.1107/s010827018400723x] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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18
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Sakurai T, Kobayashi K, Masuda H, Tsuboyama S, Tsuboyama K. Structural studies on metal complexes of chiral cyclen. IV. Chloro[(2R,5R,8S,11S)-1,4,7,10-tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane]copper(II) dichlorocuprate(I), [Cu(C44H60N4)Cl][CuCl2]. Acta Crystallogr C 1983. [DOI: 10.1107/s010827018300462x] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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19
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Sakurai T, Kobayashi K, Tsuboyama S, Kohno Y, Azuma N, Ishizu K. Structure of dichloro(5,6,8,9,11,12,14,15-octahydro-2,3-benzo-1,4,7,10,13-pentaoxacyclopentadec-2-ene)copper(II) chloroform solvate, [Cu(C14H20O5)Cl2].CHCl3, a CuII–crown-ether complex with pentagonal-bipyramidal geometry. Acta Crystallogr C 1983. [DOI: 10.1107/s0108270183004138] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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20
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Sakurai T, Kobayashi K, Kanari T, Kawata T, Higashi I, Tsuboyama S. Molecular inclusion phenomena in (2R,5R,8R,11R)-1,4,7,10-tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane. Acta Crystallogr B Struct Sci 1983. [DOI: 10.1107/s0108768183002050] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 04/03/2023]
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21
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Kobayashi K, Sakurai T, Hasegawa A, Tsuboyama S, Tsuboyama K. Structural studies on metal complexes of chiral cyclen. III. The structure of chloro[(2R,5S,8R,11S)-1,4,7,10-tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane]copper(II) chloride chloroform solvate. ACTA ACUST UNITED AC 1982. [DOI: 10.1107/s0567740882005196] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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22
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Sakurai T, Kobayashi K, Hasegawa A, Tsuboyama S, Tsuboyama K. Structural studies on metal complexes of chiral cyclen. II. Chloro[(2R,5R,8R,11R)-1,4,7,10-tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane]copper(II) chloride, and related complexes. ACTA ACUST UNITED AC 1982. [DOI: 10.1107/s0567740882002179] [Citation(s) in RCA: 19] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sakurai T, Watanabe Y, Tsuboyama K, Tsuboyama S. The structure of (2R,5S,8R,11S)-1,4,7,10-tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane. ACTA ACUST UNITED AC 1981. [DOI: 10.1107/s0567740881003671] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sakurai T, Hiramatsu H, Tsuboyama K, Tsuboyama S. Structure of (2RS,5RS,8RS,11SR)-1,4,7,10-tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane. ACTA ACUST UNITED AC 1980. [DOI: 10.1107/s056774088000903x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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Sakurai T, Tsuboyama S, Tsuboyama K. The structure of cis-(SSSR)-{bromo[dibromoaqua(2–)][(2R,5R,8R,11R)-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane]}cobalt(III). ACTA ACUST UNITED AC 1980. [DOI: 10.1107/s0567740880007261] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Hiramatsu H, Sakurai T, Tsuboyama K, Tsuboyama S. Structure of (2R,5R,8S,11S)-1,4,7,10-tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane. ACTA ACUST UNITED AC 1979. [DOI: 10.1107/s0567740879006051] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sakurai T, Kobayashi K, Tsuboyama K, Tsuboyama S. (2RS,5RS,8RS,11RS)-1,4,7,10-Tetrabenzyl-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane. ACTA ACUST UNITED AC 1978. [DOI: 10.1107/s0567740878011334] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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Sakurai T, Kobayashi K, Tsuboyama K, Tsuboyama S. The crystal and molecular structure of (2R,5R,8R,11R)-2,5,8,11-tetraethyl-1,4,7,10-tetraazacyclododecane. ACTA ACUST UNITED AC 1978. [DOI: 10.1107/s0567740878005105] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [What about the content of this article? (0)] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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