Passive electrical properties of microorganisms. IV. Studies of the protoplasts of Micrococcus lysodeikticus.

Biophysical journal ·Vol. 9 ·No. 4 ·1969-04-00 ·Pages 634-43

Einolf CW, Carstensen EL

Abstract

Observations of protoplasts of Micrococcus lysodeikticus show that removal of the cell wall of this organism decreases the dielectric constant by two orders of magnitude. The upper limit of the effective, homogeneous conductivity for the protoplast is 0.001 mho/m as compared with 0.045 mho/m for the intact cell. These results conclusively demonstrate the dominant effect of the cell wall on the low frequency dielectric properties of bacteria.

MeSH Terms

Cell Wall/physiology Electric Conductivity Electrophysiology Micrococcus/physiology Microscopy, Phase-Contrast Protoplasts/physiology

Authors & Affiliations

2 authors, click to expand affiliations / ORCID

Einolf C W

Carstensen E L

References (8)

8 references, click to expand

Bacterial conductivity in the determination of surface charge by microelectrophoresis.
Biochim Biophys Acta. 1967 Nov 28;148(2):506-16 PMID: 4864637
Passive Electrical Properties of Microorganisms: I. Conductivity of Escherichia coli and Micrococcus lysodeikticus.
Biophys J. 1965 May;5(3):289-300 PMID: 19431334
An electrophoretic study on structural components of Micrococcus lysodeikticus.
Biochim Biophys Acta. 1960 Feb 12;38:130-6 PMID: 13822582
Passive electrical properties of microorganisms. 3. Conductivity of isolated bacterial cell walls.
Biophys J. 1968 May;8(5):536-48 PMID: 5699794
ALTERNATING CURRENT CONDUCTANCE AND DIRECT CURRENT EXCITATION OF NERVE.
Science. 1934 Feb 16;79(2042):164-5 PMID: 17788146
Altenating current electrode polarization.
Biophysik. 1966;3(2):181-201 PMID: 5982795
Electrical properties of tissue and cell suspensions.
Adv Biol Med Phys. 1957;5:147-209 PMID: 13520431
Dielectric properties and ion mobility in erythrocytes.
Biophys J. 1966 Sep;6(5):621-39 PMID: 5970566

Article Info

Journal

Biophysical journal

Abbr.

Biophys J

ISSN

0006-3495

DOI

10.1016/S0006-3495(69)86408-8

Published

1969-04-00

Pages

634-43

Language

English

Region

United States

NLM ID

0370626

PMCID

PMC1367541

Subset

External Links

PubMed source DOI: 10.1016/S0006-3495(69)86408-8 PMC Full Text View journal details

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Passive electrical properties of microorganisms. IV. Studies of the protoplasts of Micrococcus lysodeikticus.

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