Active transport of magnesium in escherichia coli.

Proceedings of the National Academy of Sciences of the United States of America ·Vol. 62 ·No. 3 ·1969-03-00 ·Pages 764-71

Silver S

Abstract

Magnesium-28 is accumulated by cells of Escherichia coli by a process that is temperature-dependent and inhibited by dinitrophenol and cyanide. The rate of uptake of magnesium is concentration-dependent, with a "K(m)" of about 5 x 10(-4)M in tryptone broth. There is evidence for cellular control over this rate. The magnesium accumulation system is specific, since neither potassium nor calcium (nor apparently manganese) competes with magnesium for cellular uptake. The magnesium that is accumulated by the cells can be released by treatment with toluene and partially exchanges with excess exogenous magnesium.

MeSH Terms

Biological Transport/drug effects Biological Transport, Active Calcium/metabolism Cyanides/pharmacology Dinitrophenols/pharmacology Escherichia coli/metabolism Magnesium/metabolism Manganese/metabolism Methods Potassium/metabolism Radioisotopes Temperature Toluene

Chemicals

Cyanides Dinitrophenols Radioisotopes Toluene Manganese Magnesium Potassium Calcium

Authors & Affiliations

1 authors, click to expand affiliations / ORCID

Silver S

References (16)

16 references, click to expand

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Article Info

Journal

Proceedings of the National Academy of Sciences of the United States of America

Abbr.

Proc Natl Acad Sci U S A

ISSN

0027-8424

DOI

10.1073/pnas.62.3.764

Published

1969-03-00

Pages

764-71

Language

English

Region

United States

NLM ID

7505876

PMCID

PMC223664

Subset

External Links

PubMed source DOI: 10.1073/pnas.62.3.764 PMC Full Text View journal details

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