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Lin H, Cheng K, Kubota H, Lan Y, Riedel SS, Kakiuchi K, Sasaki K, Bernt KM, Bartolomei MS, Luo M, Wang PJ. Histone methyltransferase DOT1L is essential for self-renewal of germline stem cells. Genes Dev 2022; 36:752-763. [PMID: 35738678 PMCID: PMC9296001 DOI: 10.1101/gad.349550.122] [Citation(s) in RCA: 10] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/09/2022] [Accepted: 06/06/2022] [Indexed: 12/25/2022]
Abstract
Self-renewal of spermatogonial stem cells is vital to lifelong production of male gametes and thus fertility. However, the underlying mechanisms remain enigmatic. Here, we show that DOT1L, the sole H3K79 methyltransferase, is required for spermatogonial stem cell self-renewal. Mice lacking DOT1L fail to maintain spermatogonial stem cells, characterized by a sequential loss of germ cells from spermatogonia to spermatids and ultimately a Sertoli cell only syndrome. Inhibition of DOT1L reduces the stem cell activity after transplantation. DOT1L promotes expression of the fate-determining HoxC transcription factors in spermatogonial stem cells. Furthermore, H3K79me2 accumulates at HoxC9 and HoxC10 genes. Our findings identify an essential function for DOT1L in adult stem cells and provide an epigenetic paradigm for regulation of spermatogonial stem cells.
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Affiliation(s)
- Huijuan Lin
- School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei Province 430072, China;,Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania 19104, USA
| | - Keren Cheng
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania 19104, USA
| | - Hiroshi Kubota
- Laboratory of Cell and Molecular Biology, Department of Animal Science, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | - Yemin Lan
- Epigenetics Institute, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Simone S. Riedel
- Division of Pediatric Oncology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA;,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA;,Abramson Cancer Center, Philadelphia, Pennsylvania 19104, USA
| | - Kazue Kakiuchi
- Laboratory of Cell and Molecular Biology, Department of Animal Science, School of Veterinary Medicine, Kitasato University, Towada, Aomori 034-8628, Japan
| | - Kotaro Sasaki
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania 19104, USA
| | - Kathrin M. Bernt
- Division of Pediatric Oncology, Children's Hospital of Philadelphia, Philadelphia, Pennsylvania 19104, USA;,Department of Pediatrics, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA;,Abramson Cancer Center, Philadelphia, Pennsylvania 19104, USA
| | - Marisa S. Bartolomei
- Epigenetics Institute, Department of Cell and Developmental Biology, Perelman School of Medicine, University of Pennsylvania, Philadelphia, Pennsylvania 19104, USA
| | - Mengcheng Luo
- School of Basic Medical Sciences, Wuhan University, Wuhan, Hubei Province 430072, China
| | - P. Jeremy Wang
- Department of Biomedical Sciences, University of Pennsylvania School of Veterinary Medicine, Philadelphia, Pennsylvania 19104, USA
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2
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Kakiuchi K, Taniguchi K, Kubota H. Conserved and non-conserved characteristics of porcine glial cell line-derived neurotrophic factor expressed in the testis. Sci Rep 2018; 8:7656. [PMID: 29769589 PMCID: PMC5955883 DOI: 10.1038/s41598-018-25924-5] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/10/2017] [Accepted: 05/02/2018] [Indexed: 12/22/2022] Open
Abstract
Glial cell line-derived neurotrophic factor (GDNF) is essential for the self-renewal and proliferation of spermatogonial stem cells (SSCs) in mice, rats, and rabbits. Although the key extrinsic factors essential for spermatogonial proliferation in other mammals have not been determined, GDNF is one of the potential candidates. In this study, we isolated porcine GDNF (pGDNF) cDNAs from neonatal testis and generated recombinant pGDNF to investigate its biological activity on gonocytes/undifferentiated spermatogonia, including SSCs. In porcine testis, long and short forms of GDNF transcripts, the counterparts of pre-(α)pro and pre-(β)pro GDNF identified in humans and rodents, were expressed. The two transcripts encode identical mature proteins. Recombinant pGDNF supported proliferation of murine SSCs in culture, and their stem cell activity was confirmed by a transplantation assay. Subsequently, porcine gonocytes/undifferentiated spermatogonia were cultured with pGDNF; however, pGDNF did not affect their proliferation. Furthermore, GDNF expression was localised to the vascular smooth muscle cells, and its cognate receptor GFRA1 expression was negligible during spermatogonial proliferation in the testes. These results indicate that although pGDNF retains structural similarity with those of other mammals and conserves the biological activity on the self-renewal of murine SSCs, porcine SSCs likely require extrinsic factors other than GDNF for their proliferation.
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Affiliation(s)
- Kazue Kakiuchi
- Laboratory of Cell and Molecular Biology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - Kazumi Taniguchi
- Laboratory of Veterinary Anatomy, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
| | - Hiroshi Kubota
- Laboratory of Cell and Molecular Biology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan.
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3
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Kakiuchi K, Motoki M, Sano E, Ota S, Unoda K, Hosokawa T, Ishida S, Nakajima H, Kimura F, Arawaka S. Evaluation of muscle MRI pattern in neuromuscular disease. J Neurol Sci 2017. [DOI: 10.1016/j.jns.2017.08.1719] [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: 10/18/2022]
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4
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Kakiuchi K, Tsuda A, Goto Y, Shimada T, Taniguchi K, Takagishi K, Kubota H. Cell-surface DEAD-box polypeptide 4-immunoreactive cells and gonocytes are two distinct populations in postnatal porcine testes. Biol Reprod 2014; 90:82. [PMID: 24621921 DOI: 10.1095/biolreprod.113.114405] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/01/2022] Open
Abstract
DEAD-box polypeptide 4 (DDX4) is an evolutionally conserved ATP-dependent RNA helicase that is exclusively expressed in germ cell lineage. Although DDX4 is believed to reside and function in the cytoplasm, recent studies in mice and humans suggest that its epitope is expressed on the cell surface of a small subpopulation in the ovary, putative oogonial stem cells. No study has examined whether such cell-surface DDX4(+) cells exist in the testes of any species. In this study, we explored cell-surface DDX4(+) cells in postnatal porcine testes before the onset of spermatogenesis, where gonocytes, which are the precursors of spermatogonial stem cells, are the only germ cell population. Transfection experiments demonstrated that recombinant porcine DDX4 can be expressed on the cell surface, and cell-surface DDX4-immunoreactive cells were identified in the testis by flow cytometry. Although the DDX4-expressing cells identified in the testis were indeed gonocytes, the cell-surface DDX4-immunoreactive cells expressed negligible DDX4 mRNA and protein levels. Furthermore, they did not express other germ cell markers, such as ZBTB16, NANOS2, and DAZL, but prominently expressed early primordial germ cell markers, such as PRDM1, IFITM3, and EPCAM. Nonetheless, the cell-surface DDX4-immunoreactive cells generated neither germ cell colonies nor teratomas following transplantation into immunocompromised mouse testes. Taken together, these results demonstrate that testicular cell-surface DDX4-immunoreactive cells are not germ cells and constitute a distinct subpopulation that is different from gonocytes. Moreover, the subpopulation in porcine testes might be species specific because no DDX4-immunoreactive cells were found in postnatal mouse testes.
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Affiliation(s)
- Kazue Kakiuchi
- Laboratory of Cell and Molecular Biology, School of Veterinary Medicine, Kitasato University, Towada, Aomori, Japan
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5
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Kakiuchi K, Yamauchi Y, Taoka M, Iwago M, Fujita T, Ito T, Song SY, Sakai A, Isobe T, Ichimura T. Proteomic analysis of in vivo 14-3-3 interactions in the yeast Saccharomyces cerevisiae. Biochemistry 2007; 46:7781-92. [PMID: 17559233 DOI: 10.1021/bi700501t] [Citation(s) in RCA: 66] [Impact Index Per Article: 3.9] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
Abstract
The yeast Saccharomyces cerevisiae produces two 14-3-3 proteins, Bmh1 and Bmh2, whose exact functions have remained unclear. Here, we performed a comprehensive proteomic analysis using multistep immunoaffinity purification and mass spectrometry and identified 271 yeast proteins that specifically bind to Bmh1 and -2 in a phosphorylation-dependent manner. The identified proteins have diverse biochemical functions and cellular roles, including cell signaling, metabolism, and cell cycle regulation. Importantly, there are a number of protein subsets that are involved in the regulation of yeast physiology through a variety of cell signaling pathways, including stress-induced transcription, cell division, and chitin synthesis at the cell wall. In fact, we found that a yeast mutant deficient in Bmh1 and -2 had defects in signal-dependent response of the MAPK (Hog1 and Mpk1) cascade and exhibited an abnormal accumulation of chitin at the bud neck. We propose that Bmh1 and -2 are common regulators of many cell signaling modules and pathways mediated by protein phosphorylation and regulate a variety of biological events by coordinately controlling the identified multiplex phosphoprotein components.
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Affiliation(s)
- Kazue Kakiuchi
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji, Tokyo 192-0397, Japan
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6
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Ichimura T, Yamamura H, Sasamoto K, Tominaga Y, Taoka M, Kakiuchi K, Shinkawa T, Takahashi N, Shimada S, Isobe T. 14-3-3 proteins modulate the expression of epithelial Na+ channels by phosphorylation-dependent interaction with Nedd4-2 ubiquitin ligase. J Biol Chem 2005; 280:13187-94. [PMID: 15677482 DOI: 10.1074/jbc.m412884200] [Citation(s) in RCA: 159] [Impact Index Per Article: 8.4] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
Abstract
The ubiquitin E3 protein ligase Nedd4-2 is a physiological regulator of the epithelial sodium channel ENaC, which is essential for transepithelial Na+ transport and is linked to Liddle's syndrome, an autosomal dominant disorder of human salt-sensitive hypertension. Nedd4-2 function is negatively regulated by phosphorylation via a serum- and glucocorticoid-inducible protein kinase (Sgk1), which serves as a mechanism to inhibit the ubiquitination-dependent degradation of ENaC. We report here that 14-3-3 proteins participate in this regulatory process through a direct interaction with a phosphorylated form of human Nedd4-2 (a human gene product of KIAA0439, termed hNedd4-2). The interaction is dependent on Sgk1-catalyzed phosphorylation of hNedd4-2 at Ser-468. We found that this interaction preserved the activity of the Sgk1-stimulated ENaC-dependent Na+ current while disrupting the interaction decreased ENaC density on the Xenopus laevis oocytes surface possibly by enhancing Nedd4-2-mediated ubiquitination that leads to ENaC degradation. Our findings suggest that 14-3-3 proteins modulate the cell surface density of ENaC cooperatively with Sgk1 kinase by maintaining hNedd4-2 in an inactive phosphorylated state.
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Affiliation(s)
- Tohru Ichimura
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji-shi, Tokyo 192-0397, Japan.
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7
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Ichimura T, Kubota H, Goma T, Mizushima N, Ohsumi Y, Iwago M, Kakiuchi K, Shekhar HU, Shinkawa T, Taoka M, Ito T, Isobe T. Transcriptomic and Proteomic Analysis of a 14-3-3 Gene-Deficient Yeast. Biochemistry 2004; 43:6149-58. [PMID: 15147199 DOI: 10.1021/bi035421i] [Citation(s) in RCA: 36] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/25/2023]
Abstract
BMH1 and BMH2 encode Saccharomyces cerevisiae 14-3-3 homologues whose exact functions have remained unclear. The present work compares the transcriptomic and proteomic profiles of the wild type and a BMH1/2-deficient S. cerevisiae mutant (bmhDelta) using DNA microarrays and two-dimensional polyacrylamide gel electrophoresis. It is reported here that, although the global patterns of gene and protein expression are very similar between the two types of yeast cells, a subset of genes and proteins (a total of 220 genes) is significantly induced or reduced in the absence of Bmh1/2p. These genes include approximately 60 elements that could be linked to the reported phenotypes of the bmhDelta mutant (e.g., accumulation of glycogen and hypersensitivity to environmental stress) and/or could be the potential downstream targets of interacting partners of Bmh1/2p such as Msn2p and Rtg3p. Importantly, >30% of the identified genes (71 genes) were found to be associated with carbon (C) and nitrogen (N) metabolism and transport, thereby suggesting that Bmh1/2p may play a major role in the regulation of C/N-responsive cellular processes. This study presents the first comprehensive overview of the genes and proteins that are affected by the depletion of Bmh1/2p and extends the scope of knowledge of the regulatory roles of Bmh1/2p in S. cerevisiae.
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Affiliation(s)
- Tohru Ichimura
- Department of Chemistry, Graduate School of Science, Tokyo Metropolitan University, Hachioji-shi, Tokyo 192-0397, Japan.
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8
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Higuchi N, Kakiuchi K, Kyogoku Y, Hikichi K. A Nitrogen-15 Nuclear Magnetic Resonance Study on the Copper(II) Complex of Poly(L-lysine). Macromolecules 2002. [DOI: 10.1021/ma60073a016] [Citation(s) in RCA: 6] [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: 11/28/2022]
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9
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Mikami T, Tanaka N, Sato T, Moriyama H, Numata M, Fujiwara T, Fukumori Y, Yamanaka T, Sato M, Kakiuchi K. Crystallization and preliminary X-ray studies of hydroxylamine oxidoreductase from Nitrosomonas europaea. J Biochem 1991; 110:681-2. [PMID: 1783597 DOI: 10.1093/oxfordjournals.jbchem.a123640] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
Hydroxylamine oxidoreductase [EC 1.7.3.4] from Nitrosomonas europaea was crystallized by the microdialysis method using ammonium sulfate. Its space group is P63 with cell dimensions of a = b = 96.4 A and c = 266.2 A. Its molecular weight was determined to be 190,000-195,000 by the X-ray small angle scattering and ultracentrifugal methods.
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Affiliation(s)
- T Mikami
- Faculty of Bioscience and Biotechnology, Tokyo Institute of Technology, Kanagawa
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10
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Tanne K, Hiraga J, Kakiuchi K, Yamagata Y, Sakuda M. Biomechanical effect of anteriorly directed extraoral forces on the craniofacial complex: a study using the finite element method. Am J Orthod Dentofacial Orthop 1989; 95:200-7. [PMID: 2923100 DOI: 10.1016/0889-5406(89)90050-4] [Citation(s) in RCA: 74] [Impact Index Per Article: 2.1] [Reference Citation Analysis] [What about the content of this article? (0)] [Affiliation(s)] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023]
Abstract
This study was designed to investigate the biomechanical effect of protractive maxillary orthopedic forces on the craniofacial complex by use of the three-dimensional finite element method (FEM). The three-dimensional FEM model was developed on the basis of a dry skull of a young human being. The model consisted of 2918 nodes and 1776 solid elements. Eighteen cranial and facial sutural systems were integrated in the model. An anteriorly directed 1.0-kg force was applied on the buccal surfaces of the maxillary first molars in both a horizontal parallel direction and a 30 degree obliquely downward direction to the functional occlusal plane. The nasomaxillary complex showed a forward displacement with upward and forward rotation in a horizontal protraction case, whereas a downward force produced almost translatory repositioning of the complex in an anterior direction. High stress levels were observed in the nasomaxillary complex and its surrounding structures. However, the pattern of stress distributions within the complex was different in two force systems. A downward protraction force produced relatively uniform stress distributions, indicating the importance of the force direction in determining the stress distributions from various orthopedic forces.
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Affiliation(s)
- K Tanne
- Department of Orthodontics, Osaka University Faculty of Dentistry, Japan
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Tanne K, Kakiuchi K, Hiraga J, Sakuda M. Pattern of initial displacements of maxillary complex from maxillary protraction forces applied in various directions. J Osaka Univ Dent Sch 1988; 28:35-44. [PMID: 3269408] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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13
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Tsuchiya M, Takasugi H, Kakiuchi K, Yoshida K, Sakuda M. Symmetry analysis of the human face based on Moire topography. J Osaka Univ Dent Sch 1988; 28:17-25. [PMID: 3269406] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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14
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Tanne K, Hiraga J, Yamagata Y, Noro T, Kawakami M, Kakiuchi K, Sakuda M, Nishio J, Matsuya T. [An asymmetry of the mandible undergone osteotomy of mandibular molar region applied to fibrous dysplasia in childhood: an orthognathic surgery case with autogenous transplant of iliac bone]. Osaka Daigaku Shigaku Zasshi 1988; 33:517-28. [PMID: 3076195] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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15
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Tanne K, Kakiuchi K, Noro T, Yamagata Y, Inoue Y, Sakuda M. [Bending deformation of alveolar bone incident to orthodontic tooth movement]. Osaka Daigaku Shigaku Zasshi 1987; 32:488-95. [PMID: 3504489] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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16
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Tanne K, Sachdeva R, Sakima T, Kakiuchi K, Yamagata Y, Inoue Y, Sakuda M. Association between hard and soft tissue changes resulting from Le Fort I total maxillary osteotomy. J Osaka Univ Dent Sch 1987; 27:31-40. [PMID: 3506083] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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17
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Kakiuchi K, Ue M, Takeda M, Tadaki T, Kato Y, Nagashima T, Tobe Y, Koike H, Ida N, Odaira Y. Antiproliferating polyquinanes. V. Di-and triquinanes involving alpha-methylene or alpha-alkylidene cyclopentanone, cyclopentenone, and gamma-lactone systems. Chem Pharm Bull (Tokyo) 1987; 35:617-31. [PMID: 3594674 DOI: 10.1248/cpb.35.617] [Citation(s) in RCA: 15] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/06/2023]
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18
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Kobiro K, Tskshsdhi M, Nishikawa N, Kakiuchi K, Tobe Y, Odaira Y. Complexation between novel cyclophane host and polar guests by hydrogen bonding. Tetrahedron Lett 1987. [DOI: 10.1016/s0040-4039(00)96787-x] [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: 12/01/2022]
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Abstract
Preliminary X-ray studies on Serratia protease have been carried out using crystallographic and small angle scattering techniques. The enzyme has been crystallized in three different crystalline forms by microdialysis and vapor diffusion methods using 50 mM phosphate buffer, pH 6.0, at 24 degrees C. They have orthorhombic space groups: C222(1) for one form and P2(1)2(1)2(1) for the other two forms. A small angle X-ray scattering study showed that the radius of gyration and the maximal dimension of the molecule in aqueous solution are 26.6 A and 94.5 A, respectively. The molecular weight of the enzyme was determined to be 45,000-48,000 by various physical methods.
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Ueno M, Kishimoto H, Kakiuchi K. [Sedimentation equilibrium of aerosol OT in benzene and benzene-d6 (author's transl)]. YAKUGAKU ZASSHI 1977; 97:820-2. [PMID: 911418] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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Yoshimura T, Matsushima A, Aki K, Kakiuchi K. Formation of a complex between yeast L-lactate dehydrogenase (cytochrome b2) and cytochrome c. Ultracentrifugal and gel chromatographic analyses. Biochim Biophys Acta 1977; 492:331-9. [PMID: 18204 DOI: 10.1016/0005-2795(77)90084-8] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [What about the content of this article? (0)] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/12/2022]
Abstract
Yeast L-lactate dehydrogenase formed a stable complex with cytochrome c in weakly alkaline solution of low ionic strength. The binding ratio of cytochrome c to the enzyme depended on whether free cytochrome c was present: In the presence of a micromolar concentration of cytochrome c the enzyme formed a complex with about two molecules of cytochrome c, whereas the enzyme was in a 1:1 molecular complex after removal of free cytochrome c. This suggests that the binding of one molecule of cytochrome c changes the affinity of the other binding site on the enzyme for cytochrome c. The enzyme consists of four presumably identical subunits, each containing a binding site for cytochrome c. Thus, present data confirm the concept of negative cooperativity between the subunits of the enzyme molecule in their interaction with cytochrome c.
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Ogawa H, Shiraki H, Matsuda Y, Kakiuchi K, Nakagawa H. Purification, crystallization, and properties of adenylosuccinate synthetase from rat skeletal muscle. J Biochem 1977; 81:859-69. [PMID: 18452 DOI: 10.1093/oxfordjournals.jbchem.a131550] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/12/2022] Open
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23
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Kobayashi Y, Suezaki Y, Inouye K, Tanaka K, Kakiuchi K, Kyogoku Y. Investigation of the formation of triple helices between (Pro-Pro-Gly)n's of different degrees of polymerization using gel filtration. Biopolymers 1977; 16:247-57. [PMID: 831860 DOI: 10.1002/bip.1977.360160203] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/24/2022]
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25
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Nakai K, Nakai C, Sasaki T, Kakiuchi K, Hayashi K. Purification and some properties of toxin A from the venom of the indian cobra. Naturwissenschaften 1970; 57:387-8. [PMID: 5447860 DOI: 10.1007/bf00599975] [Citation(s) in RCA: 20] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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Kobayashi Y, Sakai R, Kakiuchi K, Isemura T. Physicochemical analysis of (Pro-Pro-Gly)n with defined molecular weight--temperature dependence of molecular weight in aqueous solution. Biopolymers 1970; 9:415-25. [PMID: 5436168 DOI: 10.1002/bip.1970.360090404] [Citation(s) in RCA: 109] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/15/2023]
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27
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Orita Y, Kakiuchi K, Shirai D, Nakamoto J, Kojima S. [Study on problems in determination of the specific gravity of urine]. Rinsho Byori 1969; 17:333-6. [PMID: 5817567] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
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28
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Kakiuchi K, Isemura T. Association and dissociation Bacillus subtilis alpha-amylase molecule. V. Studies on velocity constants for association and dissociation. J Biochem 1966; 60:72-6. [PMID: 4958041 DOI: 10.1093/oxfordjournals.jbchem.a128401] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/13/2023] Open
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29
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Kakiuchi K, Williams JW. Sedimentation analysis of a multiple myeloma gamma-G-globulin and one of its mercaptoethylamine reaction products. J Biol Chem 1966; 241:2781-6. [PMID: 4161771] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [What about the content of this article? (0)] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/09/2023] Open
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