FINE STRUCTURES OF INTRACYTOPLASMIC ORGANELLES OF MYCOBACTERIA | Zendy

Masaatsu Koike | Zendy; Kenji Takeya | Zendy

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FINE STRUCTURES OF INTRACYTOPLASMIC ORGANELLES OF MYCOBACTERIA

Author(s) -

Masaatsu Koike,

Kenji Takeya

Publication year - 1961

Publication title -

the journal of cell biology

Language(s) - English

Resource type - Journals

SCImago Journal Rank - 5.414

H-Index - 380

eISSN - 1540-8140

pISSN - 0021-9525

DOI - 10.1083/jcb.9.3.597

Subject(s) - uranyl acetate , organelle , cytoplasm , lamellar structure , membrane , electron microscope , lamella (surface anatomy) , biology , biophysics , lamellar granule , araldite , ultrastructure , materials science , crystallography , biochemistry , anatomy , chemistry , nanotechnology , layer (electronics) , physics , adhesive , optics

The fine structure of the intracytoplasmic organelles of mycobacteria was studied by means of electron microscopy of ultrathin sections. A well-preserved nuclear apparatus was obtained by fixation with OsO(4) in acetate-veronal buffer, containing calcium and tryptone, or in collidine-HCl buffer, followed by uranyl-acetate treatment and embedding in araldite. A low density nuclear region was filled with fine fibrils, 30 A in diameter, in parallel or concentric arrangement. A membranous organelle, tentatively designated as "lamellar structure," consists of unit membranes in lamellar arrangement. The thickness of each lamella in this membranous organelle coincides with that of the three-layered cytoplasmic membrane Moreover, the continuity of this unit membrane with the cytoplasmic membrane was demonstrated.

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