Document Detail

Ultrastructure and partial characterization of a regular array in the cell wall of Lactobacillus brevis.
MedLine Citation:
PMID:  92747     Owner:  NLM     Status:  MEDLINE    
The cell wall of Lactobacillus brevis was revealed by electron microscopy to have an outer layer composed of a regular array. The morphological unit of the regular array appeared to consist of four spherical subunits, each about 2 nm in diameter, which were arranged in a tetragonal pattern about 4.5 by 7.0 nm in dimension. The regular array was composed of the tetragonal units in rows in two directions at an angle of about 75 degrees to each other. The average spacing between the rows was about 10 nm in one direction and about 7 nm in the other. The tetragonally arranged subunits were removed from the cell wall by treatment with guanidine hydrochloride, urea, or sodium dodecyl sulfate (SDS) but not by the action of ethylenediaminetetraacetate, nonionic detergents, or proteolytic enzymes except pepsin. The regular subunits were shown to be composed of a protein with a molecular weight of about 51,000 by SDS-polyacrylamide gel electrophoresis.
K Masuda; T Kawata
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Publication Detail:
Type:  Journal Article    
Journal Detail:
Title:  Microbiology and immunology     Volume:  23     ISSN:  0385-5600     ISO Abbreviation:  Microbiol. Immunol.     Publication Date:  1979  
Date Detail:
Created Date:  1980-02-26     Completed Date:  1980-02-26     Revised Date:  2005-11-17    
Medline Journal Info:
Nlm Unique ID:  7703966     Medline TA:  Microbiol Immunol     Country:  JAPAN    
Other Details:
Languages:  eng     Pagination:  941-53     Citation Subset:  IM    
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MeSH Terms
Bromelains / pharmacology
Cell Wall / ultrastructure
Edetic Acid / pharmacology
Electrophoresis, Polyacrylamide Gel
Freeze Etching
Lactobacillus / ultrastructure*
Muramidase / pharmacology
Polyethylene Glycols / pharmacology
Pronase / pharmacology
Staining and Labeling
Trypsin / pharmacology
Reg. No./Substance:
0/Polyethylene Glycols; 60-00-4/Edetic Acid; 9001-00-7/Bromelains; EC; EC; EC 3.4.24.-/Pronase

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