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PMID: 319101 Published · ppublish English Journal Article Research Support, U.S. Gov't, Non-P.H.S. Research Support, U.S. Gov't, P.H.S.

Ca++ regulation in caffeine-derived microplasmodia of Physarum polycephalum.

The Journal of cell biology ·Vol. 72 ·No. 2 ·1977-02-00 ·Pages 502-5

Matthews LM

Abstract

Caffeine-derived microplasmodia possess a Ca++-sequestering system which can initiate motility. The experiments presented here suggest that this system is membranous and nonmitochondrial in nature. Therefore, it is proposed that the shuttle streaming in the plasmodium is controlled by the localized release and uptake of free Ca++ from an intracellular storage system analogous to the sarcoplasmic reticulum.

MeSH Terms
Caffeine/pharmacology Calcimycin/pharmacology Calcium/metabolism Calcium Chloride/pharmacology Cytoplasmic Streaming/drug effects Myxomycetes/physiology Physarum/drug effects,physiology
Chemicals
Calcimycin Caffeine Calcium Chloride Calcium
Authors & Affiliations
1 authors, click to expand affiliations / ORCID
Matthews L M
References (12)
12 references, click to expand
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    Biochim Biophys Acta. 1970 Apr 7;205(1):110-20 PMID: 4245341
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    Biochemistry. 1969 Dec;8(12):4976-88 PMID: 4243804
  9. Isolation of an actomyosin-like protein complex from slime mold plasmodium and the separation of the complex into actin- and myosin-like fractions.
    Biochemistry. 1969 Dec;8(12):4964-75 PMID: 4243803
  10. The mechanism of the action of caffeine on sarcoplasmic reticulum.
    J Gen Physiol. 1968 Nov;52(5):760-72 PMID: 4176939
  11. A23187: a divalent cation ionophore.
    J Biol Chem. 1972 Nov 10;247(21):6970-7 PMID: 4263618
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    Biochim Biophys Acta. 1966 Oct 31;127(2):488-98 PMID: 6007360
Article Info
Journal
The Journal of cell biology
Abbr.
J Cell Biol
ISSN
0021-9525
DOI
10.1083/jcb.72.2.502
Published
1977-02-00
Pages
502-5
Language
English
Region
United States
NLM ID
0375356
PMCID
PMC2110999
Subset
IM
External Links
PubMed source DOI: 10.1083/jcb.72.2.502 PMC Full Text View journal details
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