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  [Effect of phallotoxins on the mechanism of Ca2+-activation of glycerinated fibers of the rabbit psoas muscle]

Son´kin, B., Bukatina, A. E., & Wieland, T. (1983). [Effect of phallotoxins on the mechanism of Ca2+-activation of glycerinated fibers of the rabbit psoas muscle]. Biofizika, 28(5), 843-848. Retrieved from https://www.ncbi.nlm.nih.gov/pubmed/6639966.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0003-709C-F Version Permalink: http://hdl.handle.net/21.11116/0000-0003-71CF-5
Genre: Journal Article
Alternative Title : [Article in Russian]

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Biofiz_28_1983_843_kyrill.pdf (Any fulltext), 464KB
 
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 Creators:
Son´kin, B., Author
Bukatina, A. E., Author
Wieland, Theodor1, Author              
Affiliations:
1Max Planck Institute for Medical Research, Max Planck Society, ou_1125545              

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 Abstract: The effect of phalloidin (Ph) and some of its derivatives on isometric tension and spectrum of mechanical relaxation times of single fibres was under investigation. It was shown that Ph had a great effect only at low levels of Ca2+-activation, evoking multi-phase changes of isometric tension and a sharp rise of the rate constant of delayed tension development up to value close to that for control fibres at high [Ca2+]. As to their efficiency to change Ca2+-sensitive parameters of the fibres, phallotoxins can be arranged as follows: Ph approximately equal to Ph-sulfone greater than Ph-sulfoxide B approximately equal to dethio-Ph greater than Ph-sulfoxide A greater than or equal to seco-Ph. There is a qualitative correlation of this sequence with the actin stabilising properties for all these substances with the exception of dethio-Ph. These findings are discussed from the viewpoint of two different "on" actin states, only one of them being Ph-sensitive.

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Language(s): eng - English
 Dates: 1983-09
 Publication Status: Published in print
 Pages: 6
 Publishing info: -
 Table of Contents: -
 Rev. Type: Peer
 Degree: -

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Title: Biofizika
Source Genre: Journal
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Publ. Info: Moskva : VINITI
Pages: - Volume / Issue: 28 (5) Sequence Number: - Start / End Page: 843 - 848 Identifier: ISSN: 0006-3029
CoNE: https://pure.mpg.de/cone/journals/resource/954926222371