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Ye Q, Lin X, Wang T, Cui Y, Jiang H, Lu Y. Programmable protein topology via
SpyCatcher‐SpyTag
chemistry in one‐pot cell‐free expression system. Protein Sci 2022; 31:e4335. [DOI: 10.1002/pro.4335] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/01/2022] [Revised: 05/02/2022] [Accepted: 05/03/2022] [Indexed: 11/12/2022]
Affiliation(s)
- Qingning Ye
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering Tsinghua University Beijing China
- College of New Energy and Materials China University of Petroleum Beijing China
| | - Xiaomei Lin
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering Tsinghua University Beijing China
| | - Ting Wang
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering Tsinghua University Beijing China
| | - Yuntao Cui
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering Tsinghua University Beijing China
| | - Hao Jiang
- School of Materials Science and Engineering Beijing Institute of Technology Beijing China
| | - Yuan Lu
- Key Laboratory of Industrial Biocatalysis, Ministry of Education, Department of Chemical Engineering Tsinghua University Beijing China
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Identification and characterization two isoforms of NADH:ubiquinone oxidoreductase from the hyperthermophilic eubacterium Aquifex aeolicus. BIOCHIMICA ET BIOPHYSICA ACTA-BIOENERGETICS 2018; 1859:366-373. [DOI: 10.1016/j.bbabio.2018.02.008] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Received: 10/12/2017] [Revised: 02/18/2018] [Accepted: 02/24/2018] [Indexed: 12/20/2022]
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Senda T. [Structural Study in the Platform for Drug Discovery, Informatics, and Structural Life Science]. YAKUGAKU ZASSHI 2016; 136:449-58. [PMID: 26935085 DOI: 10.1248/yakushi.15-00236-3] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022]
Abstract
The Platform for Drug Discovery, Informatics, and Structural Life Science (PDIS), which has been launched since FY2012, is a national project in the field of structural biology. The PDIS consists of three cores - structural analysis, control, and informatics - and aims to support life science researchers who are not familiar with structural biology. The PDIS project is able to provide full-scale support for structural biology research. The support provided by the PDIS project includes protein purification with various expression systems, large scale protein crystallization, crystal structure determination, small angle scattering (SAXS), NMR, electron microscopy, bioinformatics, etc. In order to utilize these methods of support, PDIS users need to submit an application form to the one-stop service office. Submitted applications will be reviewed by three referees. It is strongly encouraged that PDIS users have sufficient discussion with researchers in the PDIS project before submitting the application. This discussion is very useful in the process of project design, particularly for beginners in structural biology. In addition to this user support, the PDIS project has conducted R&D, which includes the development of synchrotron beamlines. In the PDIS project, PF and SPring-8 have developed beamlines for micro-crystallography, high-throughput data collection, supramolecular assembly, and native single anomalous dispersion (SAD) phasing. The newly developed beamlines have been open to all users, and have accelerated structural biology research. Beamlines for SAXS have also been developed, which has dramatically increased bio-SAXS users.
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Affiliation(s)
- Toshiya Senda
- Structural Biology Research Center, Institute of Materials Structure Science, High Energy Accelerator Research Organization
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Rahman S, Yamato I, Saijo S, Mizutani K, Takamuku Y, Ishizuka-Katsura Y, Ohsawa N, Terada T, Shirouzu M, Yokoyama S, Murata T. Binding interactions of the peripheral stalk subunit isoforms from human V-ATPase. Biosci Biotechnol Biochem 2016; 80:878-90. [PMID: 26865189 DOI: 10.1080/09168451.2015.1135043] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
Abstract
The mammalian peripheral stalk subunits of the vacuolar-type H(+)-ATPases (V-ATPases) possess several isoforms (C1, C2, E1, E2, G1, G2, G3, a1, a2, a3, and a4), which may play significant role in regulating ATPase assembly and disassembly in different tissues. To better understand the structure and function of V-ATPase, we expressed and purified several isoforms of the human V-ATPase peripheral stalk: E1G1, E1G2, E1G3, E2G1, E2G2, E2G3, C1, C2, H, a1NT, and a2NT. Here, we investigated and characterized the isoforms of the peripheral stalk region of human V-ATPase with respect to their affinity and kinetics in different combination. We found that different isoforms interacted in a similar manner with the isoforms of other subunits. The differences in binding affinities among isoforms were minor from our in vitro studies. However, such minor differences from the binding interaction among isoforms might provide valuable information for the future structural-functional studies of this holoenzyme.
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Affiliation(s)
- Suhaila Rahman
- a Department of Biological Science and Technology , Tokyo University of Science , Tokyo , Japan
| | - Ichiro Yamato
- a Department of Biological Science and Technology , Tokyo University of Science , Tokyo , Japan
| | - Shinya Saijo
- a Department of Biological Science and Technology , Tokyo University of Science , Tokyo , Japan
| | - Kenji Mizutani
- a Department of Biological Science and Technology , Tokyo University of Science , Tokyo , Japan.,b Department of Chemistry , Graduate School of Science, Chiba University , Chiba , Japan
| | - Yuuki Takamuku
- b Department of Chemistry , Graduate School of Science, Chiba University , Chiba , Japan
| | | | - Noboru Ohsawa
- c RIKEN Systems and Structural Biology Center , Yokohama , Japan
| | - Takaho Terada
- c RIKEN Systems and Structural Biology Center , Yokohama , Japan
| | - Mikako Shirouzu
- c RIKEN Systems and Structural Biology Center , Yokohama , Japan
| | - Shigeyuki Yokoyama
- c RIKEN Systems and Structural Biology Center , Yokohama , Japan.,d Department of Biophysics and Biochemistry , Graduate School of Science, The University of Tokyo , Tokyo , Japan
| | - Takeshi Murata
- b Department of Chemistry , Graduate School of Science, Chiba University , Chiba , Japan.,c RIKEN Systems and Structural Biology Center , Yokohama , Japan.,e Molecular Chirality Research Center, Chiba University , Chiba , Japan.,f JST, PRESTO , Chiba , Japan
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Terada T, Murata T, Shirouzu M, Yokoyama S. Cell-free expression of protein complexes for structural biology. Methods Mol Biol 2014; 1091:151-9. [PMID: 24203330 DOI: 10.1007/978-1-62703-691-7_10] [Citation(s) in RCA: 25] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
Abstract
Cell-free protein synthesis is advantageous for the expression of protein complexes, since it is suitable for the co-expression of two or more components of the target protein complexes. The quantity and the quality of cell-free expressed complexes are generally better than those of protein complexes expressed in conventional cell-based systems, because various parameters, such as the stoichiometry of the component proteins, can be more precisely controlled. In this chapter, we describe techniques for the expression of protein complexes by an Escherichia coli cell-free protein synthesis system, which has been successfully utilized in crystallographic structural studies.
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Affiliation(s)
- Takaho Terada
- RIKEN Systems and Structural Biology Center, Yokohama, Japan
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Rahman S, Yamato I, Saijo S, Mizutani K, Ishizuka-Katsura Y, Ohsawa N, Terada T, Shirouzu M, Yokoyama S, Iwata S, Murata T. Biochemical and biophysical properties of interactions between subunits of the peripheral stalk region of human V-ATPase. PLoS One 2013; 8:e55704. [PMID: 23409023 PMCID: PMC3569449 DOI: 10.1371/journal.pone.0055704] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/18/2012] [Accepted: 12/28/2012] [Indexed: 11/18/2022] Open
Abstract
Peripheral stalk subunits of eukaryotic or mammalian vacuolar ATPases (V-ATPases) play key roles in regulating its assembly and disassembly. In a previous study, we purified several subunits and their isoforms of the peripheral stalk region of Homo sapiens (human) V-ATPase; such as C1, E1G1, H, and the N-terminal cytoplasmic region of V(o), a1. Here, we investigated the in vitro binding interactions of the subunits at the stalk region and measured their specific affinities. Surface plasmon resonance experiments revealed that the subunit C1 binds the E1G1 heterodimer with both high and low affinities (2.8 nM and 1.9 µM, respectively). In addition, an E1G1-H complex can be formed with high affinity (48 nM), whereas affinities of other subunit pairs appeared to be low (∼0.21-3.0 µM). The putative ternary complex of C1-H-E1G1 was not much strong on co-incubation of these subunits, indicating that the two strong complexes of C1-E1G1 and H-E1G1 in cooperation with many other weak interactions may be sufficiently strong enough to withstand the torque of rotation during catalysis. We observed a partially stable quaternary complex (consisting of E1G1, C1, a1(NT), and H subunits) resulting from discrete peripheral subunit interactions stabilizing the complex through their intrinsic affinities. No binding was observed in the absence of E1G1 (using only H, C1, and a1(NT)); therefore, it is likely that, in vivo, the E1G1 heterodimer has a significant role in the initiation of subunit assembly. Multiple interactions of variable affinity in the stalk region may be important to the mechanism of reversible dissociation of the intact V-ATPase.
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Affiliation(s)
- Suhaila Rahman
- Department of Biological Science and Technology, Tokyo University of Science, Chiba, Japan.
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Bronckers ALJJ, Lyaruu DM, Bervoets TJ, Medina JF, DenBesten P, Richter J, Everts V. Murine ameloblasts are immunonegative for Tcirg1, the v-H-ATPase subunit essential for the osteoclast plasma proton pump. Bone 2012; 50:901-8. [PMID: 22245629 PMCID: PMC3345336 DOI: 10.1016/j.bone.2011.12.019] [Citation(s) in RCA: 13] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 10/05/2011] [Revised: 12/23/2011] [Accepted: 12/26/2011] [Indexed: 12/14/2022]
Abstract
Maturation stage ameloblasts of rodents express vacuolar type-H-ATPase in the ruffled border of their plasma membrane in contact with forming dental enamel, similar to osteoclasts that resorb bone. It has been proposed that in ameloblasts this v-H-ATPase acts as proton pump to acidify the enamel space, required to complete enamel mineralization. To examine whether this v-H-ATPase in mouse ameloblasts is a proton pump, we determined whether these cells express the lysosomal, T-cell, immune regulator 1 (Tcirg1, v-H-Atp6v(0)a(3)), which is an essential part of the plasma membrane proton pump that is present in osteoclasts. Mutation of this subunit in Tcirg1 null (or oc/oc) mice leads to severe osteopetrosis. No immunohistochemically detectable Tcirg1 was seen in mouse maturation stage ameloblasts. Strong positive staining in secretory and maturation stage ameloblasts however was found for another subunit of v-H-ATPase, subunit b, brain isoform (v-H-Atp6v(1)b(2)). Mouse osteoclasts and renal tubular epithelium stained strongly for both Tcirg1 and v-H-Atp6v(1)b(2). In Tcirg1 null mice osteoclasts and renal epithelium were negative for Tcirg1 but remained positive for v-H-Atp6v(1)b(2). The bone in these mutant mice was osteopetrotic, tooth eruption was inhibited or delayed, and teeth were often morphologically disfigured. However, enamel formation in these mutant mice was normal, ameloblasts structurally unaffected and the mineral content of enamel similar to that of wild type mice. We concluded that Tcirg1, which is essential for osteoclasts to pump protons into the bone, is not appreciably expressed in maturation stage mouse ameloblasts. Our data suggest that the reported v-H-ATPase in maturation stage ameloblasts is not the typical osteoclast-type plasma membrane associated proton pump which acidifies the extracellular space, but rather a v-H-ATPase potentially involved in intracellular acidification.
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Affiliation(s)
- Antonius L J J Bronckers
- Dept of Oral Cell Biology ACTA, University of Amsterdam and VU University Amsterdam, Research Institute MOVE, Gustav Mahlerlaan 3004, Amsterdam, The Netherlands.
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Rahman S, Arai S, Saijo S, Yamato I, Murata T. Sarkosyl is a good regeneration reagent for studies on vacuolar-type ATPase subunit interactions in Biacore experiments. Anal Biochem 2011; 418:301-3. [DOI: 10.1016/j.ab.2011.07.009] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/22/2011] [Revised: 07/06/2011] [Accepted: 07/06/2011] [Indexed: 11/30/2022]
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