| pubmed-article:4091793 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:4091793 | lifeskim:mentions | umls-concept:C0034493 | lld:lifeskim |
| pubmed-article:4091793 | lifeskim:mentions | umls-concept:C0242692 | lld:lifeskim |
| pubmed-article:4091793 | lifeskim:mentions | umls-concept:C0001271 | lld:lifeskim |
| pubmed-article:4091793 | lifeskim:mentions | umls-concept:C1442792 | lld:lifeskim |
| pubmed-article:4091793 | lifeskim:mentions | umls-concept:C2603343 | lld:lifeskim |
| pubmed-article:4091793 | lifeskim:mentions | umls-concept:C0332120 | lld:lifeskim |
| pubmed-article:4091793 | lifeskim:mentions | umls-concept:C0027112 | lld:lifeskim |
| pubmed-article:4091793 | pubmed:issue | 2 | lld:pubmed |
| pubmed-article:4091793 | pubmed:dateCreated | 1986-3-12 | lld:pubmed |
| pubmed-article:4091793 | pubmed:abstractText | We have used actin labelled at Cys-374 with N-(1-pyrenyl)iodoacetamide [Kouyama & Mihashi (1981) Eur. J. Biochem. 114, 33-38] to monitor pressure-induced relaxations of acto-myosin subfragment 1. This label greatly increases the sensitivity of measurement of dissociated actin and reveals the presence of two relaxations. The experimental data can be fitted by a model in which actin binds subfragment 1 relatively weakly (K = 5.9 X 10(4) M-1) and then isomerizes to a more tightly bound complex (K = 1.7 X 10(7) M-1). This directly observed isomerization supports the model of Geeves, Goody & Gutfreund [(1984) J. Muscle Res. Cell. Motil. 5, 351-361]. The rate of the isomerization is too high to be observed in the pressure-jump apparatus (less than 200 microseconds), but analysis of the amplitudes allows estimation of the equilibrium constant of the isomerization as 280 (20 degrees C, 0.1 M-KCl, pH 7). The equilibrium is sensitive to temperature, pressure, ionic strength and the presence of ethylene glycol. The pressure-sensitivity of the isomerization suggests a significant conformational change of the acto-myosin subfragment 1 complex. | lld:pubmed |
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| pubmed-article:4091793 | pubmed:language | eng | lld:pubmed |
| pubmed-article:4091793 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:4091793 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:4091793 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:4091793 | pubmed:month | Dec | lld:pubmed |
| pubmed-article:4091793 | pubmed:issn | 0264-6021 | lld:pubmed |
| pubmed-article:4091793 | pubmed:author | pubmed-author:CoatesJ HJH | lld:pubmed |
| pubmed-article:4091793 | pubmed:author | pubmed-author:GeevesM AMA | lld:pubmed |
| pubmed-article:4091793 | pubmed:author | pubmed-author:CriddleA HAH | lld:pubmed |
| pubmed-article:4091793 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:4091793 | pubmed:day | 1 | lld:pubmed |
| pubmed-article:4091793 | pubmed:volume | 232 | lld:pubmed |
| pubmed-article:4091793 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:4091793 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:4091793 | pubmed:pagination | 351-6 | lld:pubmed |
| pubmed-article:4091793 | pubmed:dateRevised | 2009-11-19 | lld:pubmed |
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| pubmed-article:4091793 | pubmed:year | 1985 | lld:pubmed |
| pubmed-article:4091793 | pubmed:articleTitle | Pressure-relaxation studies of pyrene-labelled actin and myosin subfragment 1 from rabbit skeletal muscle. Evidence for two states of acto-subfragment 1. | lld:pubmed |
| pubmed-article:4091793 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:4091793 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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