Evidence map›Paper›PMID 9746531›Full record

ArticleBiophysical journal1998

Regulation of catch muscle by twitchin phosphorylation: effects on force, ATPase, and shortening.

T M Butler, S U Mooers, C Li, S Narayan, M J Siegman

Open access · bronzeAbstract read
In one paragraph

Article in Biophysical journal, 1998. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 17 papers.

0numbers the graph read from it
0cells of the map it votes in
17citing papers in PubMed
0.9field-weighted citation impact, top 23% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

17 citing papers in PubMed, 47 citations in OpenAlex.

  1. Review
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  3. Review
  4. Article
  5. A force-activated kinase in a catch smooth muscle.Journal of muscle research and cell motility · 2011
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

5 authors at 1 institution in 1 country.

T M ButlerDepartment of Physiology, Jefferson Medical College, Philadelphia, Pennsylvania 19107, USA. butlert@jeflin.tju.edu
S U Mooers
C Li
S Narayan
M J Siegman
Jefferson College · US

Funding

CATCH--MECHANOCHEMISTRY AND REGULATION IN SMOOTH MUSCLER01AR042758 · NIAMS · THOMAS JEFFERSON UNIVERSITY · PI BUTLER, THOMAS M · 1995 to 2008
$4.6M
NIAMS NIH HHS AR42758
6 · The paper itself

Abstract

Recent experiments on permeabilized anterior byssus retractor muscle (ABRM) of Mytilus edulis have shown that phosphorylation of twitchin releases catch force at pCa > 8 and decreases force at suprabasal but submaximum [Ca2+]. Twitchin phosphorylation decreases force with no detectable change in ATPase activity, and thus increases the energy cost of force maintenance at subsaturating [Ca2+]. Similarly, twitchin phosphorylation causes no change in unloaded shortening velocity (Vo) at any [Ca2+], but when compared at equal submaximum forces, there is a higher Vo when twitchin is phosphorylated. During calcium activation, the force-maintaining structure controlled by twitchin phosphorylation adjusts to a 30% Lo release to maintain force at the shorter length. The data suggest that during both catch and calcium-mediated submaximum contractions, twitchin phosphorylation removes a structure that maintains force with a very low ATPase, but which can slowly cycle during submaximum calcium activation. A quantitative cross-bridge model of catch is presented that is based on modifications of the Hai and Murphy (1988. Am. J. Physiol. 254:C99-C106) latch bridge model for regulation of mammalian smooth muscle.

Indexed as

Adenosine TriphosphatasesAdenosine TriphosphateAnimalsBivalviaCaenorhabditis elegans ProteinsCalciumCalmodulin-Binding ProteinsCyclic AMPEgtazic AcidIn Vitro TechniquesKineticsModels, ChemicalMuscle ContractionMuscle ProteinsMuscle, SmoothPhosphorylationadenosine 5'-O-(3-thiotriphosphate)Adenosine TriphosphatasesAdenosine TriphosphateCaenorhabditis elegans ProteinsCalciumCalmodulin-Binding ProteinsCyclic AMPEgtazic AcidMuscle Proteinsunc-22 protein, C elegans

Identifiers

PMID9746531
PMCPMC1299861
OpenAlexW2029192519

What OpenQuestion holds

Textmetadata
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.