Biology and Radiobiology of Anucleate Systems. Bacteria and by Silvano Bonotto, Roland Goutier, René Kirchmann

By Silvano Bonotto, Roland Goutier, René Kirchmann

Biology and Radiobiology of Anucleate platforms, I. micro organism and Animal Cells files the lawsuits of the three-day symposium on Biology and Radiobiology of Anucleate structures held in Mol, Belgium on June 21-23, 1971.
This compilation generally makes a speciality of the anucleate platforms, yet a few papers facing the functionality of membrane-bound polyribosomes and behaviour of remoted mobile organelles also are integrated.
The subject matters mentioned contain morphogenesis and synthesis of macromolecules within the absence of the nucleus; construction of DNA-less micro organism; and alterations of radiosensitivity in nucleate and anucleate amoeba fragments. The heterogeneity of membrane-bound polyribosomes of mouse myeloma cells in tissue tradition; squid great axon; and cytoplasmic harm resulting in hold up of oral regeneration in Stentor coeruleus also are elaborated. This booklet likewise covers the rules of protein synthesis in anucleate frog oocytes and DNA, RNA, and protein synthesis in anucleate fragments of sea urchin eggs.
This e-book is an effective reference for college students and researchers meaning to gather wisdom of the conventional and irradiated cellphone and refined relatives among its nucleus and cytoplasm.

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Holt, New York, (1965). , Embryology and Genetics, New York University Press, (1934). , Dalcq,A. 822 (1936). M. 1, 181-188 (1969). , Acetabularia and cell biology, London Logos Press (1970). , Grippo,P. Natl. A. , 57,, 1394-1400 (1967). Morph. l, 51-61 (1969). R. D. , _5, 1-38 (1970). M. B. , 176, 347-366 (1970). Tiedemann,H. Cell Physiol. l, 129-144 (1968). K. , 2£, 89-101 26 (1969). PRODUCTION OF DNA-LESS BACTERIA Yukinori HIROTA and Matthieu RICARD Service de Génétique cellulaire de l'Institut Pasteur et du Collège de France, Institut Pasteur, Paris, France.

R'orsch (1964) The selection of mutants of Escherichia coli with impaired cell division at elevated temperature. , 1_, 121-128. R. Pardee (1967) Conditional mutants involving septum formation in Escherichia coli. , £2> 107-114. Weissbach,A. Lisio (1965) Alkylation of nucleic acids by mitomycin C and porfiromycin. , 196-200. 39 Y. HIROTA AND M. RICARD Table 1 - Phenotypes of mitomycin-resistant strains derived from MFT100 (ParB) and CTR1425 (Dna-B) a. MFT 100 Number of indépendant mutants Thermosensitivity 3 TS Yes (15 -40 7o) 4 TR No ( Λ/ 3 %) 9 TS No ( ) Parental strain TS Segregation of DNA-less bacteria (7,) No (Λ/ 2 7o) b.

41 Y. HIROTA AND M. RICARD DnaB(T42) PorA(T32) σ α ^ ° ° DnaD(CT7) < - > FtsA(T84) FtsC(MT108) Fig. 2 - A preliminary genetic map of the mutations altered at the different steps of cellular division. 42 ANUCLEATE SYSTEMS: BACTERIA AND ANIMAL CELLS Dna-Div Par-Div CÜZ) ( ·· C3D D ( CDC im D( I · ! ) i )D Min ) ( M ŒD COZ) CZEH3ED ( ···· ) I I <—)(mmm( I 1 ) OGEIIDCD O Λ ) ŒEDD ^ N 0(ΣΣΓ> OC Λ A CED CED OCUHDO Fig. 3 - A schematic representation of the processes of segregation of DNA-less cells and mini-cells.

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