101
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Höltke J, Seibl R, Burg J, Mühlegger K, Mattes R, Kessler C. Non-radioactive HighSens DNA labeling and detection system (Digoxigenin: anti-digoxigenin based ELISA principle). ACTA ACUST UNITED AC 1988. [DOI: 10.1007/bf00469298] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/01/2022]
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102
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Mattes R, Scholand H, Mikloweit U, Schrenk V. Molybdenum complexes of hydrazido- and diazenido-ligands derived from thio- and dithio-carbazates. Acta Crystallogr A 1987. [DOI: 10.1107/s0108767387081108] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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103
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F�sser B, Mattes R. Salze und Ester der 1,2-Hydrazin-bis(thiocarbons�ure) Kristallstrukturen von K2[OSC?N2H2?CSO] � 2 H2O, CH3S?CO?N2H2?CO?SCH3 und CH3O?CS?N2H2?CS?OCH3 bei 140 K. Z Anorg Allg Chem 1987. [DOI: 10.1002/zaac.19875470418] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/08/2022]
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104
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Weidle UH, Borgya A, Mattes R, Lenz H, Buckel P. Reconstitution of functionally active antibody directed against creatine kinase from separately expressed heavy and light chains in non-lymphoid cells. Gene 1987; 51:21-9. [PMID: 3110010 DOI: 10.1016/0378-1119(87)90470-7] [Citation(s) in RCA: 35] [Impact Index Per Article: 0.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023]
Abstract
We report here for the first time reconstitution and secretion of functionally active antibody in non-lymphoid cells. Expression vectors for the light and the heavy chain of a monoclonal antibody directed against creatine kinase (EC 2.7.3.2) were introduced into COS and CHO Chinese hamster ovary dhfr- cells. Introduction of the expression vectors separately gave rise to immuno-reactive material in the culture supernatants, but only cotransfection of the expression plasmids resulted in secretion of protein with immuno-reactivity against antibodies directed against mouse heavy and light chains as well as specific antigen-binding affinity, as determined by enzyme-linked immunosorbent assay. Secreted kappa and gamma chains from reconstituted antibody were characterized by immunoadsorption and sodium dodecyl sulfate-polyacrylamide gel electrophoresis. In COS cells, reconstituted antibody was transiently secreted; cotransfection of kappa and gamma chain expression plasmids with a dihydrofolate reductase (DHFR)-expression plasmid into CHO dhfr- cells gave rise to stable transformants secreting functionally active antibody.
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105
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Buckel P, Hübner-Parajsz C, Mattes R, Lenz H, Haug H, Beaucamp K. Cloning and nucleotide sequence of heavy- and light-chain cDNAs from a creatine-kinase-specific monoclonal antibody. Gene X 1987; 51:13-9. [PMID: 3110009 DOI: 10.1016/0378-1119(87)90469-0] [Citation(s) in RCA: 39] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/04/2023] Open
Abstract
Determination of creatine kinase isoenzymes by inhibition assay is a useful tool for the diagnosis and monitoring of myocardial infarction. We have established several mouse hybridoma lines secreting monoclonal antibodies with creatine kinase M-subunit inhibitory capacity. One of the monoclonal antibodies (MAK33) inhibits creatine kinase-MM by 80% without influencing the activity of creatine kinase-MB. A combination of two monoclonal antibodies increased the inhibition of creatine kinase MM up to 99.4%. Poly(A) + RNA of hybridoma cells secreting MAK33 was isolated and used for cloning cDNA of both heavy and light chains of this antibody. Full-length cDNA clones were obtained by hybridization with gamma 1 and kappa constant region cDNA probes. The complete nucleotide sequences from the variable regions including signal peptide and part of the 5'-untranslated regions have been determined.
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106
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107
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Brink K, Mattes R. Die strukturen von N-mesylhydroxylamin, CH3SO2N(H)OH, und N-mesyl-O-methylhydroxylamin, CH3SO2N(H)OCH3. Acta Crystallogr C 1986. [DOI: 10.1107/s0108270186096336] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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108
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Mikloweit U, Mattes R. Darstellung und Eigenschaften von Alkalimetall-Tetrathioterephthalaten. Die Kristallstruktur von K2[S2C?C6H4?CS2] � 2 H2O. Z Anorg Allg Chem 1986. [DOI: 10.1002/zaac.19865320120] [Citation(s) in RCA: 8] [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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109
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110
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Zhengyan L, Janssen H, Mattes R, Schn�ckel H, Krebs B. Schwingungsspektren und Versuche zur Strukturbestimmung von Aluminiumsulfidhalogeniden und Aluminiumselenidhalogeniden, AISX und AlSeX mit X = Cl, Br, I. Z Anorg Allg Chem 1984. [DOI: 10.1002/zaac.19845130608] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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111
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Mattes R, Johann G. Dipotassium salt of 3-hydroxy-4-mercapto-2-thioxo-3-cyclobuten-1-one dihydrate (potassium 1,3-dithiosquarate dihydrate), K2[C4O2S2].2H2O, at 140 K. Acta Crystallogr C 1984. [DOI: 10.1107/s0108270184005552] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022] Open
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112
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Mattes R, Rühl D. Structure of diphenylthiophosphinic acid, (C6H5)2P(=S)OH, at 140 K. Acta Crystallogr C 1984. [DOI: 10.1107/s0108270184003188] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022] Open
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113
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114
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M�hlsiepen KM, Mattes R. Thiophosphinatokomplexe der Lanthanoiden. I. Dimere Dimethylthiophosphinatokomplexe des LaIII, PrIII, NdIII und ErIII. Z Anorg Allg Chem 1983. [DOI: 10.1002/zaac.19835061113] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/10/2022]
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115
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116
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M�hlsiepen KM, Mattes R. Thiophosphinatokomplexe der Lanthanoiden. II. Dicyclohexylthiophosphinatokomplexe des NdIII und ErIII. Z Anorg Allg Chem 1983. [DOI: 10.1002/zaac.19835061114] [Citation(s) in RCA: 12] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/09/2022]
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117
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Mattes R, M�hlsiepen KM, R�hl D. Zur Struktur von Thiophosphins�uren Die Kristall- und Molek�lstruktur der Dimethylthiophosphins�ure, (CH3)2PSOH, und der Dicyclohexylthiophosphins�ure, (C6H11)2PSOH, bei 140 K. Z Anorg Allg Chem 1983. [DOI: 10.1002/zaac.19834990408] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/05/2022]
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118
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119
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Mattes R, F�rster H. Darstellung, Struktur und Schwingungsspektren der Oxofluorowolframate(VI) Cs2[WO3F2] und Cs3[W2O4F7]. Z Anorg Allg Chem 1982. [DOI: 10.1002/zaac.19824940114] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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120
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121
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122
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Mattes R, Plescher G. Structure of lithium hydrogen acetylenedicarboxylate monohydrate. ACTA ACUST UNITED AC 1981. [DOI: 10.1107/s0567740881003981] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/11/2022]
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123
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Altmeppen D, Mattes R. Structure of tetrabutylammonium μ-oxo-μ-sulfido-bis[(1,2-dithiosquarato-S,S')oxomolybdate(V)]. ACTA ACUST UNITED AC 1980. [DOI: 10.1107/s0567740880007571] [Citation(s) in RCA: 10] [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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124
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Schmitt R, Bernhard E, Mattes R. Characterisation of Tn1721, a new transposon containing tetracycline resistance genes capable of amplification. MOLECULAR & GENERAL GENETICS : MGG 1979; 172:53-65. [PMID: 377024 DOI: 10.1007/bf00276215] [Citation(s) in RCA: 72] [Impact Index Per Article: 1.6] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
R plasmid pRSD1 contains tetracycline resistance (tet) genes in a 3.55 Mdal-region capable of amplification by forming tandem repeats (Mattes, Burkardt and Schmitt, Molec. gen. Genet., 1979). The repetitious tet element is itself part of a 7.2 Mdal-transposon, named Tn1721, as demonstrated by the following criteria; (i) Tn1721 has been translocated to phage lambda. The resulting hybrid phage lambda tet contains the 7.2 Mdal-insertion to the right of the attachment site, but not continguous with it indicating translocation of the element by non-homologous recombination. In addition, lambda tet has sustained a 3.4 Mdal-deletion adjacent to the insertion. (ii) Further transposition of Tn1721 to the 21.5 Mdal-plasmid R388 resulted in R388::Tn1721 derivatives, two of which were characterised. They contain Tn1721 inserted into different sites but in the same orientation as shown by restriction and heteroduplex analyses. These translocation of Tn1721 were not accompanied by deletions of DNA. (iii) The insertion plasmid pRSD102(R388::Tn1721) has conserved the capacity of the original plasmid pRSD1 to amplify the 3.55 Mdal-tet region. It has been concluded that Tn1721 constitutes a novel transposon encompassing a tet region capable of selective amplification. The model proposed for Tn1721 contains three short repeats. Two direct repeats, flanking the 3.55 Mdal tet region, provide sequence homology for amplification. The third repeat (located distally to tet) is inverted and provides the basis for transposition of the 7.2 Mdal-element.
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125
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Mattes R, Burkardt HJ, Schmitt R. Repetition of tetracycline resistance determinant genes on R plasmid pRSD1 in Escherichia coli. MOLECULAR & GENERAL GENETICS : MGG 1979; 168:173-84. [PMID: 377009 DOI: 10.1007/bf00431443] [Citation(s) in RCA: 30] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
Abstract
The 30 megadalton (Mdal)-conjugative, fi- plasmid pRSD1 determines inducible tetracycline resistance (Tc) in Escherichia coli. As shown by restriction analysis, a 3.5 Mdal-EcoRI fragment of pRSD1 spliced into the small plasmid pRSD2124 comprises the entire Tc determinant (tet) region. A restriction map of pRSD1 is presented which includes the location of the tet region and of an "underwound" loop not related to Tc (Burkardt et al., 1978). Selective amplification of tet genes is demonstrated by three lines of evidence. (i) The resistance level of cell harbouring pRSD1 increases approximately tenfold by induction with 10 microgram/ml of tetracycline. Further growth in the presence of 100 microgram/ml of the drug ("tetracycline stress") selects for cells with even higher resistance levels (about 300 microgram/ml) in rec+ cells. In a recA strain, a smaller proportion of cells attains these high resistance levels suggesting the involvement of host recombination. (ii) Electron micrographs of pRSD1-DNA isolated from tetracycline-stressed cells reveal a heterogeneous population of circular DNA molecules ranging between 1.7 and 21.6 micron. The distribution of contour lengths shows a discrete pattern ascribed to the presence of autonomous single- and multiple-copy Tc determinants and to intact plasmids containing zero to six tet regions in tandem repeats. (iii) This interpretation is supported by heteroduplex and restriction analyses which demonstrate the presence of multiple copies of the 3.5 Mdal-element encompassing the tet region in pRSD1 molecules selected by tetracycline stress. It has been concluded that gene amplification leading to tandem repetition of the tet region ensues in pRSD1. Such plasmids confer increased tetracycline resistance and can, thefore, be selected by high doses of the drug.
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