Affiliation:
1. Department of Molecular Biophysics, Yale University, New Haven, Connecticut
Abstract
Morowitz, Harold
J. (Yale University, New Haven, Conn.),
and Jack Maniloff
. Analysis of the life cycle of
Mycoplasma gallisepticum
. J. Bacteriol.
91:
1638–1644. 1966.—A series of electron microscope observations on
Mycoplasma gallisepticum
strain A5969 have been made by use of thin-section techniques and negative staining. The methods presented a consistent picture of a postdivision cell, which contains a fibrillar nuclear region, surrounding ribosomal region, highly organized bleb at one end of the cell, granular infrableb region, and bounding unit membrane. Cell division commenced with the appearance of a second infrableb area at the end of the cell opposite the original bleb. A new bleb grew in this area, and the cell then elongated. The nuclear material segregated into two parts separated by a band of ribosomes. A constriction appeared, in this central ribosome-packed area, leading to the formation of two daughter cells. The following was noted: the cells were very small (volume, 5 × 10
−14
cm
3
); each cell was highly structured and strongly ordered; and the replication appeared to be a very precisely programmed series of events.
Publisher
American Society for Microbiology
Subject
Molecular Biology,Microbiology
Reference9 articles.
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