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Ihara H, Yokoyama C, Miyata A, Kosaka T, Nüsing R, Ullrich V, Tanabe T. Induction of thromboxane synthase and prostaglandin endoperoxide synthase mRNAs in human erythroleukemia cells by phorbol ester. FEBS Lett 1992; 306:161-4. [PMID: 1633871 DOI: 10.1016/0014-5793(92)80990-x] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The effects of 12-O-tetradecanoyl-phorbol-13-acetate (TPA) on the mRNA levels of two enzymes, thromboxane synthase (TXS) and prostaglandin endoperoxide synthase (PES), responsible for the synthesis of thromboxane A2 from arachidonic acid, were studied in human erythroleukemia (HEL) cells by RNA blot analysis. TPA induced both TXS and PES mRNAs in HEL cells in a dose-dependent manner at 36 h. The half-maximal and maximal effects for the induction of both mRNAs were at approximately 3 x 10(-9) M and at 10(-8) M, respectively. TXS and PES mRNA levels increased in a time-dependent fashion by TPA, and reached to 7- and 3.5-fold of the control, respectively after 48 h of TPA treatment. These results suggest that expression of TXS and PES genes in HEL cells were simultaneously stimulated by TPA.
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Takahashi Y, Ueda N, Yoshimoto T, Yamamoto S, Yokoyama C, Miyata A, Tanabe T, Fuse I, Hattori A, Shibata A. Immunoaffinity purification and cDNA cloning of human platelet prostaglandin endoperoxide synthase (cyclooxygenase). Biochem Biophys Res Commun 1992; 182:433-8. [PMID: 1734857 DOI: 10.1016/0006-291x(92)91750-k] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
The cDNA for prostaglandin endoperoxide synthase (cyclooxygenase) was cloned from human platelets by the polymerase chain reaction amplification method, and the primary structure of the enzyme was deduced from the nucleotide sequence. The enzyme was composed of 599 amino acids including 23-amino acid signal sequence, and the calculated molecular weight of the mature protein was 65,995. The enzyme was immunoaffinity-purified from human platelets. The N-terminal amino acid sequence determined by Edman degradation was Ala-Asp-Pro-Gly-Ala-Pro-Thr-Pro-, and the result confirmed the primary structure of the enzyme, which was deduced from the cDNA sequence.
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Nakauchi H, Tanaka K, Yokoyama C, Miyazaki M, Yamazaki N. Characterization of a 100-year-old rubber bearing by microanalytical methods. J Appl Polym Sci 1992. [DOI: 10.1002/app.1992.070500030] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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54
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ABE H, NONOMURA K, TOOYAMA I, KIMURA H, ADIB AA, KATAOKA K, AISO S, SHIOZAWA M, OHYAMA M, TAKEUCHI Y, EZAKI T, AOKI T, OINUMA T, KAWANO JI, SUGANUHA T, Arakawa M, Mizoguchi A, Ide C, ARAKI T, ASADA-KUBOTA M, KANAMURA S, Asaka Y, Watanabe J, Kanamura S, Azumi Y, Kubo H, Horii A, Konishi E, Urata Y, Ashihara T, CHIDA K, CHIKAMORI K, YAMASHITA S, DATE F, SASANO H, NAGURA H, FUJII Y, SHIMIZU K, SATOH M, TAKAHASHI F, NAKASE K, FUJIOKA Y, NAGASHIMA K, TOGASHI Y, TAKEICHI N, FUJIMOTO K, Fujimoto S, WATANABE J, Fujioka A, Nagano M, FUJITA Y, IZUNO Y, TSUBURA A, MORII S, Fukuda M, Imamura Y, Noriki S, Koizumi K, HANAI T, USUDA N, MORITA T, NAGATA T, HASEGAWA H, MIZUHIRA V, NOTOYA M, Hashimoto H, Kusakabe M, HASHIMOTO J, KUNIKATA M, MORI M, HASHIMOTO R, OTANI H, HATTA T, TANAKA O, HATCHOH M, UEDA K, NORIKI S, IMAMURA Y, FUKUDA M, HEMMI A, SUZUKI K, KATOH R, KAWAOI A, HIRALSHI K, KASHIWAGI N, MIZUTA T, ADACHI M, SUZUKI K, HIROTA S, IKEDA T, KITAMURA Y, NOMURA S, HORI S, UOBE K, TOMINAGA K, WADA S, WATO M, NISHIKAWA T, TANAKA A, HOUTANI T, SATO K, IKEDA M, UEYAMA T, KUMAZAWA T, SUGIMOTO T, Hyodo T, IHIDA K, TSUYAMA S, KASHIO N, MURATA F, Ikeda T, Okamura H, Yokoyama C, Ichitani Y, Nagatsu I, Ibata Y, IMAI S, HAGA S, NISHINO T, NAGANO K, YAIAIOTO H, KIYOZUKA Y, INOKUCHI T, YOKOYAMA R, HAMASAKI M, MIYAJIMA S. Immunohistochemical Study of [D-Ala 2] deltorphin I in Rat Retina. Acta Histochem Cytochem 1992. [DOI: 10.1267/ahc.25.718] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/22/2022] Open
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55
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Yokoyama C, Miyata A, Ihara H, Ullrich V, Tanabe T. Molecular cloning of human platelet thromboxane A synthase. Biochem Biophys Res Commun 1991; 178:1479-84. [PMID: 1714723 DOI: 10.1016/0006-291x(91)91060-p] [Citation(s) in RCA: 88] [Impact Index Per Article: 2.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
Abstract
Complementary DNA coding for thromboxane A synthase was amplified by polymerase chain reaction using primers synthesized according to the partial amino acid sequences of human platelet thromboxane A synthase (Nüsing, R., Schneider-Voss, S., and Ullrich, V. (1990) Arch. Biochem. Biophys. 280, 325-330) and cloned into pBluescript SK II(-). The primary structure of human platelet enzyme was deduced from the nucleotide sequence of the cDNA. The enzyme is composed of 533 amino acids with a molecular weight of 60,487. The primary structure of the enzyme exhibited a 34-36% homology to the amino acid sequences of cytochrome P450s classified in the P450 III gene family. The highly conserved cysteine-containing sequence involved in the heme-binding site of P450 was found near the carboxyl terminus (residues 472-492). The size of the major thromboxane A synthase mRNA from human platelets and human erythroleukemia cells was estimated to be approximately 2.2 kilobases by RNA blot analysis.
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Fukshima H, Miyagaki M, Fukushima H, Yokoyama C, Hara T, Takahashi Y, Abe T, Hatani N, Nagoshi C. Contribution of nonthermodynamic processes to the formation of helium fragment in nucleus-nucleus collisions at 1.88A GeV. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1991; 44:834-843. [PMID: 9967467 DOI: 10.1103/physrevc.44.834] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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57
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Oshima T, Yoshimoto T, Yamamoto S, Kumegawa M, Yokoyama C, Tanabe T. cAMP-dependent induction of fatty acid cyclooxygenase mRNA in mouse osteoblastic cells (MC3T3-E1). J Biol Chem 1991; 266:13621-6. [PMID: 1649827] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/28/2022] Open
Abstract
In an osteoblastic cell line, MC3T3-E1, cloned from mouse calvaria, epinephrine stimulated the production of prostaglandin E2 as an essentially sole arachidonate metabolite (Kusaka, M., Oshima, T., Yokota, K., Yamamoto, S., and Kumegawa, M. (1988) Biochim. Biophys. Acta. 972, 339-346). Western and Northern blot analyses showed increases in the enzyme protein and mRNA of fatty acid cyclooxygenase in the epinephrine-treated cells. A rapid cAMP production caused by epinephrine was followed by increases in the activity and mRNA of cyclooxygenase. Both dibutyryl cAMP and 8-bromo-cAMP also increased the level of the cyclooxygenase activity and mRNA. These results suggest that cAMP produced by beta-adrenergic stimulation was responsible for the increased cyclooxygenase mRNA level leading to induction of the cyclooxygenase enzyme. Furthermore, the addition of prostaglandin E2 (the final arachidonate metabolite in the MC3T3-E1 cells) brought about a rapid synthesis of intracellular cAMP followed by increases in the enzyme protein and mRNA of cyclooxygenase.
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Oshima T, Yoshimoto T, Yamamoto S, Kumegawa M, Yokoyama C, Tanabe T. cAMP-dependent induction of fatty acid cyclooxygenase mRNA in mouse osteoblastic cells (MC3T3-E1). J Biol Chem 1991. [DOI: 10.1016/s0021-9258(18)92745-6] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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59
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Yamamoto S, Takahashi Y, Ueda N, Yoshimoto T, Hayashi Y, Shono F, Fuse I, Hattori A, Yokoyama C, Miyata A, Tanabe T. Abnormal fatty acid cyclooxygenase in human platelets. Thromb Res 1991. [DOI: 10.1016/0049-3848(91)90314-m] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/26/2022]
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60
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Kodama K, Ushida N, Mokhtarani A, Paolone VS, Volk JT, Wilcox JO, Yager PM, Edelstein RM, Freyberger AP, Gibaut DB, Lipton RJ, Nichols WR, Potter DM, Russ JS, Zhang Y, Jang HI, Kim JY, Lim IT, Pac MY, Baller BR, Stefanski RJ, Nakazawa K, Tasaka S, Choi YS, Chung KH, Kim DC, Park IG, Song JS, Yoon CS, Chikawa M, Abe T, Fujii T, Fujioka G, Fujiwara K, Fukushima H, Hara T, Takahashi Y, Taruma K, Tsuzuki Y, Yokoyama C, Chang SD, Cheon BG, Cho JH, Kang JS, Kim CO, Kim KY, Kim TY, Lee JC, Lee SB, Lim GY, Nam SW, Shin TS, Sim KS, Woo JK, Isokane Y, Tsuneoka Y, Aoki S, Gauthier A, Hoshino K, Kitamura H, Kobayashi M, Miyanishi M, Nakamura K, Nakamura M. Measurement of the relative branching fraction Gamma (D0-->K micro nu )/ Gamma (D0--> microX). PHYSICAL REVIEW LETTERS 1991; 66:1819-1822. [PMID: 10043318 DOI: 10.1103/physrevlett.66.1819] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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61
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Bahk SY, Chang SD, Cheon BG, Cho JH, Jang HI, Hahn CH, Hara T, Lim GY, Kang JS, Kim CO, Kim JY, Kim KY, Kim SN, Kim TI, Kim TY, Koo DG, Lee SB, Lim IT, Moon KH, Nam SW, Pac MY, Park IG, Park JN, Ryu JY, Shin TS, Sim KS, Song JS, Woo JK, Yokoyama C, Yoon CS. Diffractive excitation of 14.6-, 60-, and 200-GeV/nucleon 16O and 14.6-GeV/nucleon 28Si nuclei in nuclear emulsion. PHYSICAL REVIEW. C, NUCLEAR PHYSICS 1991; 43:1410-1419. [PMID: 9967181 DOI: 10.1103/physrevc.43.1410] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/22/2023]
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62
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Yoshimoto T, Suzuki H, Yamamoto S, Takai T, Yokoyama C, Tanabe T. Cloning and expression of arachidonate 12-lipoxygenase cDNA from porcine leukocytes. ADVANCES IN PROSTAGLANDIN, THROMBOXANE, AND LEUKOTRIENE RESEARCH 1991; 21A:29-32. [PMID: 1825555] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 12/28/2022]
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63
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Yoshimoto T, Yamamoto Y, Arakawa T, Suzuki H, Yamamoto S, Yokoyama C, Tanabe T, Toh H. Molecular cloning and expression of human arachidonate 12-lipoxygenase. Biochem Biophys Res Commun 1990; 172:1230-5. [PMID: 2244907 DOI: 10.1016/0006-291x(90)91580-l] [Citation(s) in RCA: 56] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
The cDNA for a 12-lipoxygenase was isolated from cDNA library of human erythroleukemia cells. The cDNA had an open reading frame encoding 663 amino acids with a calculated molecular weight of 75,513. The deduced amino acid sequence of human 12-lipoxygenase exhibited 41.5%, 65.3% and 65.4% identity with human 5-lipoxygenase, human 15-lipoxygenase and porcine 12-lipoxygenase, respectively. Blot hybridization analysis of RNA from human erythroleukemia cells demonstrated a single species (3.1 kb) of mRNA with the cDNA probe for 12-lipoxygenase of these cells, but not with the cDNA for porcine leukocyte enzyme. The cytosol of Escherichia coli transformed with a recombinant pUC19 plasmid oxygenated the position 12 of arachidonic acid.
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64
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Hunter JV, Yokoyama C, Moseley IF, Wright JE. Aneurysmal bone cyst of the sphenoid with orbital involvement. Br J Ophthalmol 1990; 74:505-8. [PMID: 2202437 PMCID: PMC1042187 DOI: 10.1136/bjo.74.8.505] [Citation(s) in RCA: 28] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
We present a case of aneurysmal bone cyst involving the roof of the orbit and sphenoid bone, with plain film, computed tomography, and magnetic resonance imaging findings. The natural history and treatment depend on the presence of associated abnormalities such as fibrous dysplasia or a giant cell tumour. In this case the lesion was solitary and was successfully removed, so that possible complications from radiotherapy were avoided.
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Abstract
We report on two cases of enophthalmos, caused by maxillary atrophy, a rarely reported monostotic forme fruste of hemifacial atrophy.
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66
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Abstract
The case is described of a locally aggressive lipoblastic tumour presenting in the orbit of an 8-year-old boy. There do not appear to be any previous reports of a comparable tumour in this situation.
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67
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Sakane F, Yamada K, Kanoh H, Yokoyama C, Tanabe T. Porcine diacylglycerol kinase sequence has zinc finger and E-F hand motifs. Nature 1990; 344:345-8. [PMID: 2156169 DOI: 10.1038/344345a0] [Citation(s) in RCA: 194] [Impact Index Per Article: 5.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/30/2022]
Abstract
Cell stimulation causes diacylglycerol kinase (DGK) to convert the second messenger diacylglycerol into phosphatidate, thus initiating the resynthesis of phosphatidylinositols and attenuating protein kinase C activity. Of the DGK isoforms so far reported, only porcine DGK from lymphocytes has been characterized in detail. Here we report the isolation and sequencing of complementary DNA clones that together cover the entire region encoding porcine DGK (relative molecular mass 80,000 (80K)). The deduced primary structure of this DGK contains the putative ATP-binding sites, two cysteine-rich zinc finger-like sequences similar to those found in protein kinase C, and two E-F hand motifs, typical of Ca2(+)-binding proteins like calmodulin. Indeed, we find that the activity of this DGK isoform is enhanced by micromolar concentrations of Ca2+ in the presence of deoxycholate or sphingosine. These properties of 80K DGK indicate that its action is probably linked with both of the second messengers diacylglycerol and inositol 1,4,5-trisphosphate.
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Yoshimoto T, Suzuki H, Yamamoto S, Takai T, Yokoyama C, Tanabe T. Cloning and sequence analysis of the cDNA for arachidonate 12-lipoxygenase of porcine leukocytes. Proc Natl Acad Sci U S A 1990; 87:2142-6. [PMID: 2315307 PMCID: PMC53642 DOI: 10.1073/pnas.87.6.2142] [Citation(s) in RCA: 116] [Impact Index Per Article: 3.4] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022] Open
Abstract
The complete amino acid sequence of arachidonate 12-lipoxygenase (EC 1.13.11.31) of porcine leukocytes was deduced by cloning and sequence analysis of DNA complementary to its mRNA. The sequence was confirmed by automated Edman degradation of the N-terminal regions of the native enzyme and its proteolytic fragments. The cDNA had an open reading frame encoding 662 amino acid residues with a calculated molecular weight of 74,911. Amino acid residues 533-545, Cys-(Xaa)3-Cys-(Xaa)3-His-(Xaa)3-His, showed significant homology to the short cysteine- or histidine-containing sequences proposed as the metal-binding domains of transcription factors and various metal-containing proteins [Berg, J. M. (1986) Science 232, 485-487]. The amino acid sequence of 12-lipoxygenase exhibited 86% identity with human reticulocyte 15-lipoxygenase and showed 41% identity with human leukocyte 5-lipoxygenase. The 12-lipoxygenase cDNA recognized a 3.4-kilobase mRNA species in various porcine cell types, with the largest amount in leukocytes, followed by pituitary, lung, jejunum, and spleen.
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69
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Yokoyama C, Tanabe T. Cloning of human gene encoding prostaglandin endoperoxide synthase and primary structure of the enzyme. Biochem Biophys Res Commun 1989; 165:888-94. [PMID: 2512924 DOI: 10.1016/s0006-291x(89)80049-x] [Citation(s) in RCA: 246] [Impact Index Per Article: 7.0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/01/2023]
Abstract
The complete amino acid sequence of human prostaglandin endoperoxide synthase (EC 1.14.99.1, cyclooxygenase) was deduced by cloning and sequence analysis of human genomic DNA coding for the enzyme. The isolated clones covered approximately 40 kilobase pairs of human gene and the protein coding region of the enzyme was distributed into eleven exons, which encoded 599 amino acid residues with a calculated molecular weight of 68,548. Human prostaglandin endoperoxide synthase exhibited 91% amino acid identity with the sheep enzyme.
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70
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Brash AR, Yokoyama C, Oates JA, Yamamoto S. Mechanistic studies of the dioxygenase and leukotriene synthase activities of the porcine leukocyte 12S-lipoxygenase. Arch Biochem Biophys 1989; 273:414-22. [PMID: 2774560 DOI: 10.1016/0003-9861(89)90500-6] [Citation(s) in RCA: 11] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
Lipoxygenases react with hydroperoxy fatty acids and catalyze dioxygenase or dehydrase (leukotriene A4 (LTA4) synthase) types of reactions. In the present investigation we studied the mechanism of reaction of the purified porcine leukocyte 12S-lipoxygenase with 15S-hydroperoxyeicosatetraenoic acid (15S-HPETE). Oxygen-18 labeling experiments with GC-MS analysis were used to distinguish dioxygenase and leukotriene synthase activities of the enzyme; 8S,15S-DiHPETE and 14R,15S-DiHPETE were formed by oxygenation, and a series of 8,15- and 14,15-diols were formed via enzymatic synthesis of 14,15-LTA4 and nonenzymatic hydrolysis of the epoxide. 10D-3H- and 10L-3H-labeled substrates were used to study the stereospecificity of the C-10 hydrogen abstraction in the synthesis of these products. Formation of 14,15-DiHPETE and 14,15-LTA4 was associated with stereoselective abstraction of hydrogen from the 10L position of 15S-HPETE. The same type of measurements on the 8S,15S-DiHPETE product indicated a variable (50-250%) retention of the 10L-3H label, and a consistent 90% retention of the 10D-3H. In contrast, the synthesis of 8S,15S-DiHPETE by the soybean lipoxygenase was associated with the expected stereoselective abstraction of the 10D hydrogen. It appears that the porcine leukocyte 12S-lipoxygenase synthesizes 8S,15S-DiHPETE by a different mechanism.
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Yokoyama C, Takai T, Tanabe T. Primary structure of sheep prostaglandin endoperoxide synthase deduced from cDNA sequence. FEBS Lett 1988; 231:347-51. [PMID: 3129310 DOI: 10.1016/0014-5793(88)80847-0] [Citation(s) in RCA: 176] [Impact Index Per Article: 4.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
The complete amino acid sequence of prostaglandin endoperoxide synthase from sheep vesicular gland has been deduced by cloning and sequence analysis of DNA complementary to its messenger RNA. The results were confirmed by digestion of the enzyme with carboxypeptidase Y and by automated Edman degradation of the intact enzyme polypeptide and peptide fragments obtained by limited proteolysis of the enzyme with Achromobacter proteinase I. Mature sheep prostaglandin endoperoxide synthase is shown to be composed of 576 amino acids with an Mr of 66,175. The precursor peptide is predicted to contain a 24-residue signal peptide. The serine residue susceptible to acetylation by aspirin is found to be located near the C-terminus of the enzyme polypeptide.
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Yamamoto S, Ueda N, Ehara H, Maruyama T, Yokoyama C, Kaneko S, Yoshimoto T, Komatsu N, Watanabe K, Hattori A. Biochemical studies on mammalian lipoxygenases. Ann N Y Acad Sci 1988; 524:12-26. [PMID: 3132879 DOI: 10.1111/j.1749-6632.1988.tb38527.x] [Citation(s) in RCA: 18] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
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73
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Takai T, Yokoyama C, Wada K, Tanabe T. Primary structure of chicken liver acetyl-CoA carboxylase deduced from cDNA sequence. J Biol Chem 1988; 263:2651-7. [PMID: 2893793] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/03/2023] Open
Abstract
The complete amino acid sequence of acetyl-CoA carboxylase from chicken liver has been deduced by cloning and sequence analysis of DNA complementary to its messenger RNA. The results were confirmed by Edman degradation of peptide fragments obtained by digestion of the enzyme polypeptide with Achromobacter proteinase I or staphylococcal serine proteinase. Chicken liver acetyl-CoA carboxylase is predicted to be composed of 2,324 amino acid residues, having a calculated molecular weight of 262,706. The biotin carboxyl carrier protein domain is located in the middle region of the enzyme polypeptide. The amino-terminal portion of the acetyl-CoA carboxylase has been found to exhibit a homologous primary structure to that of carbamyl phosphate synthetase. Localization of possible functional domains including biotin carboxylase subsite in the acetyl-CoA carboxylase polypeptide is discussed.
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Takai T, Yokoyama C, Wada K, Tanabe T. Primary structure of chicken liver acetyl-CoA carboxylase deduced from cDNA sequence. J Biol Chem 1988. [DOI: 10.1016/s0021-9258(18)69116-1] [Citation(s) in RCA: 46] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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75
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Hagane K, Akera T, Stemmer P, Yao AZ, Yokoyama C. Comparison of [3H]ouabain binding sites in intact cells and cell homogenates: apparent lack of glycoside receptors unrelated to sarcolemmal Na+, K+-ATPase in guinea-pig heart. Eur J Pharmacol 1988; 146:137-44. [PMID: 2832193 DOI: 10.1016/0014-2999(88)90495-5] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/02/2023]
Abstract
In intact heart muscle cells incubated in a physiological solution, i.e. under the condition in which the cardiac glycosides produce pharmacological and toxicological effects, receptors for these actions of the glycosides should be available to ouabain. In cell homogenates, [3H]ouabain binding observed in the presence of Mg2+ and inorganic phosphate represents binding of the glycoside to Na+, K+-ATPase. Therefore, numbers of these two types of [3H]ouabain binding sites were compared using viable myocyte preparations obtained from ventricular muscle of guinea-pig heart. The number of ouabain binding sites observed in viable myocytes in the absence of Ca2+ and K+ was not different from the number of ouabain binding sites on Na+, K+-ATPase observed with sodium dodecylsulfate-treated homogenates prepared from isolated myocytes. These results do not support the hypothesis that there are receptors for the pharmacological or toxic actions of ouabain other than those that are associated with sarcolemmal Na+, K+-ATPase.
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Yamamoto S, Ueda N, Yokoyama C, Fitzsimmons BJ, Rokach J, Oates JA, Brash AR. Lipoxin syntheses by arachidonate 12- and 5-lipoxygenases purified from porcine leukocytes. ADVANCES IN EXPERIMENTAL MEDICINE AND BIOLOGY 1988; 229:15-26. [PMID: 3421157 DOI: 10.1007/978-1-4757-0937-7_2] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/05/2023]
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77
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Ueda N, Yokoyama C, Yamamoto S, Fitzsimmons BJ, Rokach J, Oates JA, Brash AR. Lipoxin synthesis by arachidonate 12-lipoxygenase purified from porcine leukocytes. Biochem Biophys Res Commun 1987; 149:1063-9. [PMID: 3122743 DOI: 10.1016/0006-291x(87)90516-x] [Citation(s) in RCA: 29] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
Arachidonate 12-lipoxygenase purified from porcine leukocytes shows 14R-oxygenase and 14, 15-leukotriene A synthase activities with 15-hydroperoxy-arachidonic acid as substrate. The enzyme transformed 5, 15-dihydroperoxy-arachidonic acid to several compounds with a conjugated tetraene. A major product was identified as 5S, 14R, 15S-trihydroperoxy-6, 10, 12-trans-8-cis-eicosatetraenoic acid, which was reduced to 5S, 14R, 15S-8-cis-lipoxin B. A requirement of molecular oxygen and the results of H2(18)O experiments suggested that formation of the latter compound was attributed mostly to the 14R-oxygenase activity of the enzyme. There were several other minor products identified as lipoxin A and B isomers. They were produced presumably by hydrolysis of 14, 15-epoxy compound formed by the leukotriene A synthase activity of 12-lipoxygenase.
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78
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Yokoyama C, Shinjo F, Yoshimoto T, Yamamoto S, Oates JA, Brash AR. Arachidonate 12-lipoxygenase purified from porcine leukocytes by immunoaffinity chromatography and its reactivity with hydroperoxyeicosatetraenoic acids. J Biol Chem 1986; 261:16714-21. [PMID: 3782139] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023] Open
Abstract
Arachidonate 12-lipoxygenase was purified to near homogeneity from the cytosol fraction of porcine leukocytes by ammonium sulfate fractionation, DEAE-cellulose chromatography, and immunoaffinity chromatography using a monoclonal antibody against the enzyme. The purified enzyme was unstable (half-life of about 24 h at 4 degrees C) but was markedly protected from the inactivation by storage in the presence of ferrous ion or in the absence of air. The lag phase which was observed before the start of the enzyme reaction was abolished by the presence of 12-hydroperoxy-5,8,10,14-eicosatetraenoic acid. An apparent substrate inhibition was observed with arachidonic acid and other active substrates; however, the substrate concentration curve was normalized by the presence of 0.03% Tween 20. Arachidonic acid was transformed to the omega-9 oxygenation product 12-hydroperoxy-5Z,8Z,10Z,14Z-eicosatetraenoic acid. C-12 oxygenation also occurred with 5-hydroxy- and 5-hydroperoxyeicosatetraenoic acids; the respective maximal velocities were 60 and 150% of the rate with arachidonic acid. Octadecaenoic acids were also good substrates. gamma-Linolenic acid was oxygenated in the omega-9 position (C-10), while linoleic and alpha-linolenic acids were subject to omega-6 oxygenation (C-13). A far more complex reaction was observed using 15-hydroperoxy-5,8,11,13-eicosatetraenoic acid as substrate. Reaction occurred at 70% of the rate with arachidonic acid. The dihydroperoxy and dihydroxy products were identified by their UV absorption spectra, high performance liquid chromatography, and gas chromatography-mass spectrometry. Among these products, (8S,15S)-dihydroperoxy-5Z,9E,11Z,13E-eicos atetraenoic acid and (14R,15S)-erythro-dihydroperoxy-5Z,8Z,10E, 12E-eicosatetraenoic acid were produced in larger amounts than the (8R)- and (14S,15S)-threo isomers, respectively; these products were attributed to 8- and 14-oxygenation of the 15-hydroperoxy acid. Furthermore, formation of 14,15-leukotriene A4 was inferred from the characteristic pattern of its hydrolysis products comprised of equal amounts of (8R,15S)- and (8S,15S)-dihydroxy-5Z,9E,11E,13E-eicosatetraenoi c acids together with smaller amounts of (14R,15S)-erythro- and (14S,15S)-threo-dihydroxy-5Z,8Z,10E,12E-eicosate traenoic acids. Thus, both lipoxygenase and leukotriene synthase activities were demonstrated with the homogeneous preparation of porcine leukocyte 12-lipoxygenase.
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79
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Ushida N, Kondo T, Tasaka S, Park IG, Song JS, Hara T, Homma Y, Tsuzuki Y, Fujioka G, Fukushima H, Takahashi Y, Tatsumi S, Yokoyama C, Fujiwara K, Taruma K, Bahk SY, Kim CO, Park JN, Bailey DC, Conetti S, Mercure P, Trischuk J, Turcotte M, Aoki S, Chiba K, Fuchi H, Hoshino K, Kodama K, Matsui R, Miyanishi M, Nakamura M, Nakazawa K, Niu K, Niwa K, Ohashi M, Sasaki H, Tomita Y, Torii N, Yamakawa O, Yanagisawa Y, Aubrecht GJ, Dunlea J, Errede S, Gauthier A, Gutzwiller MJ, Kuramata S, Oleynik G, Reay NW, Reibel K, Sidwell RA, Stanton NR, Moriyama K, Shibata H, Kusumoto O, Noguchi Y, Okusawa T, Teranaka M, Yamato J, Okabe H, Yokota J, Frederiksen SG, Hebert CJ, Hebert J, McLeod B. Limits to nu micro, nu e--> nu tau oscillations and nu micro, nu e--> tau - direct coupling. PHYSICAL REVIEW LETTERS 1986; 57:2897-2900. [PMID: 10033902 DOI: 10.1103/physrevlett.57.2897] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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80
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Yokoyama C, Shinjo F, Yoshimoto T, Yamamoto S, Oates JA, Brash AR. Arachidonate 12-lipoxygenase purified from porcine leukocytes by immunoaffinity chromatography and its reactivity with hydroperoxyeicosatetraenoic acids. J Biol Chem 1986. [DOI: 10.1016/s0021-9258(18)66623-2] [Citation(s) in RCA: 93] [Impact Index Per Article: 2.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/22/2022] Open
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81
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Horie T, Tsukayama M, Kourai H, Yokoyama C, Furukawa M, Yoshimoto T, Yamamoto S, Watanabe-Kohno S, Ohata K. Syntheses of 5,6,7- and 5,7,8-trioxygenated 3',4'-dihydroxyflavones having alkoxy groups and their inhibitory activities against arachidonate 5-lipoxygenase. J Med Chem 1986; 29:2256-62. [PMID: 3783588 DOI: 10.1021/jm00161a021] [Citation(s) in RCA: 27] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/07/2023]
Abstract
Arachidonate 5-lipoxygenase plays a pivotal role in the biosynthesis of leukotrienes. Cirsiliol (3',4',5-trihydroxy-6,7-dimethoxyflavone), a selective inhibitor of the enzyme, was derivatized by introducing alkyl groups of various chain lengths at positions 5, 6, 7, and 8 of the A ring of the flavone skeleton. Modification of the positions 5 and 6 with an alkyl group of 5-10 carbons markedly decreased the IC50 values for 5-lipoxygenase inhibition to the order of 10 nM. As tested with 5- or 6-hexyloxy derivatives, a relatively selective inhibition of 5-lipoxygenase was shown. Inhibition of 12-lipoxygenase required much higher concentrations of these compounds, and cyclooxygenase was not inhibited. Modification of positions 7 and 8 did not increase the inhibitory effect of most flavone compounds.
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82
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Araujo RS, Maya-Flores J, Barnes-McConnell D, Yokoyama C, Dazzo FB, Bliss FA. Semienclosed Tube Cultures of Bean Plants (
Phaseolus vulgaris
L.) for Enumeration of
Rhizobium phaseoli
by the Most-Probable-Number Technique. Appl Environ Microbiol 1986; 52:954-6. [PMID: 16347191 PMCID: PMC239147 DOI: 10.1128/aem.52.4.954-956.1986] [Citation(s) in RCA: 10] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/20/2022] Open
Abstract
The semienclosed tube culture technique of Gibson was modified to permit growth of common bean (
Phaseolus vulgaris
L.) roots in humid air, enabling enumeration of the homologous (nodule forming) symbiont,
Rhizobium phaseoli
, by the most-probable-number plant infection method. A bean genotype with improved nodulation characteristics was used as the plant host. This method of enumeration was accurate when tubes were scored 3 weeks after inoculation with several
R. phaseoli
strains diluted from aqueous suspensions, peat-based inoculants, or soil. A comparison of population sizes obtained by most-probable-number tube cultures and plate counts indicated that 1 to 3 viable cells of
R. phaseoli
were a sufficient inoculant to induce nodule formation.
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83
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Ushida N, Kondo T, Tasaka S, Park IG, Song JS, Hara T, Homma Y, Tsuzuki Y, Fujioka G, Fukushima H, Takahashi Y, Tatsumi S, Yokoyama C, Fujiwara K, Taruma K, Bahk SY, Kim CO, Park JN, Bailey DC, Conetti S, Mercure P, Trischuk J, Turcotte M, Aoki S, Chiba K, Fuchi H, Hoshino K, Kodama K, Matsui R, Miyanishi M, Nakamura M, Nakazawa K, Niu K, Niwa K, Ohashi M, Sasaki H, Tomita Y, Torii N, Yamakawa O, Yanagisawa Y, Aubrecht GJ, Dunlea J, Errede S, Gauthier A, Gutzwiller MJ, Kuramata S, Oleynik G, Reay NW, Reibel K, Sidwell RA, Stanton NR, Moriyama K, Shibata H, Kusumoto O, Noguchi Y, Okusawa T, Teranaka M, Yamato J, Okabe H, Yokota J, Frederiksen SG, Hebert CJ, Hebert J, McLeod B. Lifetime of D0 charmed mesons produced in neutrino interactions. PHYSICAL REVIEW LETTERS 1986; 56:1771-1774. [PMID: 10032771 DOI: 10.1103/physrevlett.56.1771] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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84
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Ushida N, Kondo T, Tasaka S, Park IG, Song JS, Hara T, Homma Y, Tsuzuki Y, Fujioka G, Fukushima H, Takahashi Y, Tatsumi S, Yokoyama C, Fujiwara K, Taruma K, Bahk SY, Kim CO, Park JN, Bailey DC, Conetti S, Mercure P, Trischuk J, Turcotte M, Aoki S, Chiba K, Fuchi H, Hoshino K, Kodama K, Matsui R, Miyanishi M, Nakamura M, Nakazawa K, Niu K, Niwa K, Ohashi M, Sasaki H, Tomita Y, Torii N, Yamakawa O, Yanagisawa Y, Aubrecht GJ, Dunlea J, Errede S, Gauthier A, Gutzwiller MJ, Kuramata S, Oleynik G, Reay NW, Reibel K, Sidwell RA, Stanton NR, Moriyama K, Shibata H, Kusumoto O, Noguchi Y, Okusawa T, Teranaka M, Yamato J, Okabe H, Yokota J, Frederiksen SG, Hebert CJ, Hebert J, McLeod B. Lifetimes of the charmed particles D+/-, F+/-, and Lambda c+ produced by neutrinos. PHYSICAL REVIEW LETTERS 1986; 56:1767-1770. [PMID: 10032770 DOI: 10.1103/physrevlett.56.1767] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 05/23/2023]
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85
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Shinjo F, Yoshimoto T, Yokoyama C, Yamamoto S, Izumi S, Komatsu N, Watanabe K. Studies on porcine arachidonate 12-lipoxygenase using its monoclonal antibodies. J Biol Chem 1986; 261:3377-81. [PMID: 3081503] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Monoclonal antibodies were raised against arachidonate 12-lipoxygenase using a partially purified enzyme from porcine leukocytes as an antigen. Immunohistochemical studies indicated a selective localization of 12-lipoxygenase in the cytosol of polymorphonuclear leukocytes. Two separate species of antibody (lox-1 and lox-2) recognizing different sites of the enzyme protein were utilized to develop a method to determine the amount of 12-lipoxygenase protein rather than the activity of enzyme. Fab fragment of lox-2 was conjugated to horseradish peroxidase, and the conjugate as a label was bound to 12-lipoxygenase. The complex was precipitated with the aid of the other antibody (lox-1) and protein A, and the peroxidase activity in the precipitate was correlated with the amount of 12-lipoxygenase. The immunoenzymometry of 12-lipoxygenase was more convenient and sensitive than the conventional assay to determine the conversion of [1-14C]arachidonic acid. Furthermore, in several porcine tissues this method allowed quantitation of the enzyme, the activity of which was masked due to the presence of certain endogenous inhibitors. A ubiquitous distribution of 12-lipoxygenase in porcine tissues was demonstrated by application of this method.
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86
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Shinjo F, Yoshimoto T, Yokoyama C, Yamamoto S, Izumi S, Komatsu N, Watanabe K. Studies on porcine arachidonate 12-lipoxygenase using its monoclonal antibodies. J Biol Chem 1986. [DOI: 10.1016/s0021-9258(17)35793-9] [Citation(s) in RCA: 50] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/28/2022] Open
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87
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Ushida N, Kondo T, Fujioka G, Fukushima H, Takahashi Y, Tatsumi S, Yokoyama C, Homma Y, Tsuzuki Y, Bahk S, Kim C, Park J, Song J, Bailey D, Conetti S, Fisher J, Trischuk J, Fuchi H, Noshino K, Miyanishi M, Niu K, Niwa K, Shibuya H, Yanagisawa Y, Errede S, Gutzwiller M, Kuramata S, Reay N, Reibel K, Romanowski T, Sidwell R, Stanton N, Moriyama K, Shibata H, Hara T, Kusumoto O, Noguchi Y, Teranaka M, Okabe H, Yokota J, Harnois J, Hébert C, Hébert J, Lokanathan S, McLeod B, Tasaka S, Davis P, Martin J, Pitman D, Prentice J, Sinervo P, Yoon T, Kimura H, Maeda Y. Experimental details on lifetime measurements of neutrino-produced charmed particles in a tagged emulsion spectrometer. ACTA ACUST UNITED AC 1984. [DOI: 10.1016/0167-5087(84)90446-0] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/27/2022]
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88
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Yokoyama C, Mizuno K, Mitachi H, Yoshimoto T, Yamamoto S, Pace-Asciak CR. Partial purification and characterization of arachidonate 12-lipoxygenase from rat lung. BIOCHIMICA ET BIOPHYSICA ACTA 1983; 750:237-43. [PMID: 6407525 DOI: 10.1016/0005-2760(83)90024-3] [Citation(s) in RCA: 45] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/20/2023]
Abstract
Incubation of rat lung cytosol with arachidonic acid produced 12-hydroxy-5,8,10,14-eicosatetraenoic acid as a major product, which was identified by gas chromatography-mass spectrometry. By ammonium sulfate fractionation and DEAE-cellulose chromatography the arachidonate 12-lipoxygenase was purified about 30-fold from the rat lung cytosol. The partially purified enzyme was mostly free of the glutathione peroxidase activity and transformed arachidonic acid to its 12-hydroperoxide. 5,8,11,14,17-Eicosapentaenoic acid was also an active substrate, and the oxygenation at C-12 was confirmed by mass spectrometry. A significant amount of 12-lipoxygenase activity was also found in the microsomes and other particulate fractions.
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89
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Yoshimoto T, Yokoyama C, Ochi K, Yamamoto S, Maki Y, Ashida Y, Terao S, Shiraishi M. 2,3,5-Trimethyl-6-(12-hydroxy-5,10-dodecadiynyl)-1,4-benzoquinone (AA861), a selective inhibitor of the 5-lipoxygenase reaction and the biosynthesis of slow-reacting substance of anaphylaxis. BIOCHIMICA ET BIOPHYSICA ACTA 1982; 713:470-3. [PMID: 6817808] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [MESH Headings] [Subscribe] [Scholar Register] [Indexed: 01/22/2023]
Abstract
2,3,5-Trimethyl-6-(12-hydroxy-5,10-dodecadiynyl)-1,4-benzoquinone (AA861) inhibited 5-lipoxygenase of guinea pig peritoneal polymorphonuclear leukocytes (ID50, 0.8 microM). The inhibition was of competitive type. 12-Lipoxygenases and fatty acid cyclooxygenase were not affected below 10 microM. The formation of slow-reacting substance of anaphylaxis by the sensitized guinea pig lung was almost fully suppressed by the compound at 10 microM.
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90
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Yamamoto K, Fujita M, Yokoyama C, Ikeda H. [Case of congenital paramyotonia with an abnormally high level of serum creatine phosphokinase]. Rinsho Shinkeigaku 1976; 16:687-92. [PMID: 1034536] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [MESH Headings] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/25/2022]
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