251
|
Chambon P, Mandel JL, Gissinger F, Kedinger C, Gross-Bellard M, Hossenlopp P. Transcription of double-stranded viral and cellular DNAs by purified mammalian DNA-dependent RNA polymerases. BASIC LIFE SCIENCES 1974; 3:257-68. [PMID: 4362808 DOI: 10.1007/978-1-4613-4529-9_20] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
252
|
Mandel JL, Kedinger C, Gissinger F, Chambon P. Size of the RNA's synthesized by purified calf thymus DNA-dependent RNA polymerases on SV40 DNA. FEBS Lett 1973; 29:109-12. [PMID: 4352502 DOI: 10.1016/0014-5793(73)80537-x] [Citation(s) in RCA: 14] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/10/2023]
|
253
|
Chambon P, Meilhac M, Walter S, Kedinger C, Mandel JL, Gissinger F. Structural and functional studies on mammalian nuclear DNA-dependent RNA polymerases. BASIC LIFE SCIENCES 1973; 1:75-89. [PMID: 4589689 DOI: 10.1007/978-1-4684-0877-5_7] [Citation(s) in RCA: 5] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
|
254
|
Chambon P, Gissinger F, Kedinger C, Mandel JL, Meilhac M, Nuret P. Structural and functional properties of three mammalian nuclear DNA-dependent RNA polymerases. ACTA ENDOCRINOLOGICA. SUPPLEMENTUM 1972; 168:222-46. [PMID: 4562654 DOI: 10.1530/acta.0.071s222] [Citation(s) in RCA: 26] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/11/2023]
Abstract
ABSTRACT
Three DNA-dependent RNA polymerases AI, BI and BII were purified from calf thymus. These enzymes were characterized by their sensitivity to amanitin, their subunit pattern and their template specificities. Enzyme AI is resistant to amanitin, while B enzymes are inhibited by this poison. Each of these enzymes contains two subunits of high molecular weight: A1 (M.W. 197 000) and A2 (M.W. 126 000) for enzyme AI, Bl (M.W. 214 000) and B3 (M.W. 140 000) for enzyme BI, B2 (M.W. 180 000) and B3 for enzyme BII. In addition, each enzyme contains several subunits of lower molecular weight. Purification of B enzymes from rat liver showed the presence of two enzymes similar to calf thymus RNA polymerases BI and BII and suggested the existence of an additional B enzyme in rat liver. The number of RNA polymerase form B molecules was determined in a variety of animal tissues by binding of labelled amanitin. The values ranged from 1 × 104 to 6.5 × 104 molecules per haploid genome.
Studies with derivatives of rifamycin indicated that calf thymus B enzymes were able to recognize specific initiation sites on calf thymus DNA, which were different from those recognized by enzyme AI or E. coli RNA polymerase. These results favour the hypothesis that the multiplicity of animal RNA polymerases could play an active role in the control of transcription.
Collapse
|
255
|
Kedinger C, Gissinger F, Gniazdowski M, Mandel JL, Chambon P. Animal DNA-dependent RNA polymerases. 1. Large-scale solubilization and separation of A and B calf-thymus RNA-polymerase activities. EUROPEAN JOURNAL OF BIOCHEMISTRY 1972; 28:269-76. [PMID: 5069713 DOI: 10.1111/j.1432-1033.1972.tb01910.x] [Citation(s) in RCA: 102] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Indexed: 01/13/2023]
|
256
|
Gniazdowski M, Mandel JL, Gissinger F, Kedinger C, Chambon P. Calf thymus RNA polymerases exhibit template specificity. Biochem Biophys Res Commun 1970; 38:1033-40. [PMID: 4908542 DOI: 10.1016/0006-291x(70)90343-8] [Citation(s) in RCA: 36] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
257
|
Kedinger C, Gniazdowski M, Mandel JL, Gissinger F, Chambon P. Alpha-amanitin: a specific inhibitor of one of two DNA-pendent RNA polymerase activities from calf thymus. Biochem Biophys Res Commun 1970; 38:165-71. [PMID: 4907405 DOI: 10.1016/0006-291x(70)91099-5] [Citation(s) in RCA: 439] [Impact Index Per Article: 8.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/12/2023]
|
258
|
Mandel JL, Chambon P. Characterization of RNA synthesized at high ionic strength by rat liver aggregate RNA polymerase. Biochem Biophys Res Commun 1969; 35:868-74. [PMID: 5791526 DOI: 10.1016/0006-291x(69)90704-9] [Citation(s) in RCA: 7] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/16/2023]
|