| pubmed-article:3730499 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0327749 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0032067 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0026845 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0459471 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0027096 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0444626 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0542193 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0043301 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C1510941 | lld:lifeskim |
| pubmed-article:3730499 | lifeskim:mentions | umls-concept:C0230113 | lld:lifeskim |
| pubmed-article:3730499 | pubmed:issue | 1 | lld:pubmed |
| pubmed-article:3730499 | pubmed:dateCreated | 1986-9-16 | lld:pubmed |
| pubmed-article:3730499 | pubmed:abstractText | Detailed structural analysis of muscles normally used to study myosin cross-bridge behavior (e.g., frog sartorius muscle, insect flight muscle) is extremely difficult due to the statistical disorder inherent in their myosin filament arrays. Bony fish muscle is different from all other muscle types in having a myosin filament (A-Band) array with good three-dimensional (crystalline) regularity that is coherent right across each myofibril. Rigorous structure analysis is feasible with fish muscle. We show that low-angle x-ray diffraction patterns from plaice fin muscle contain characteristic vertebrate layer lines at orders of 429 (+/- 0.2) A, that these layer lines are well sampled by row-lines from a simple hexagonal lattice of a-spacing 470 (+/- 2.0) A at rest length and that there are meridional reflections, due to axial perturbations of the basic helix of myosin heads, similar in position to those from frog muscle but differing in relative intensities. Clear trends based on modeling to a resolution of 130 A of the observed intensities in the low angle x-ray diffraction pattern from relaxed plaice fin muscle suggest that: (a) the pattern out to 130 A is more sensitive to the distribution of the two heads than it is to details of the head shape, (b) both heads in one myosin molecule probably tilt axially in the same direction by approximately 20-40 degrees relative to a normal to the thick filament backbone, (c) the center of mass of the heads is at 145 to 160 A radius, and (d) the two heads form a compact structure by lying closely adjacent to each other and almost parallel. Little rotational disorder of the heads can occur. Because of its crystallinity, bony fish muscle provides a uniquely useful structural probe of myosin cross-bridge behavior in other muscle states such as rigor and active contraction. | lld:pubmed |
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| pubmed-article:3730499 | pubmed:language | eng | lld:pubmed |
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| pubmed-article:3730499 | pubmed:citationSubset | IM | lld:pubmed |
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| pubmed-article:3730499 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:3730499 | pubmed:month | Jul | lld:pubmed |
| pubmed-article:3730499 | pubmed:issn | 0006-3495 | lld:pubmed |
| pubmed-article:3730499 | pubmed:author | pubmed-author:SquireJJ | lld:pubmed |
| pubmed-article:3730499 | pubmed:author | pubmed-author:HarfordJJ | lld:pubmed |
| pubmed-article:3730499 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:3730499 | pubmed:volume | 50 | lld:pubmed |
| pubmed-article:3730499 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:3730499 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:3730499 | pubmed:pagination | 145-55 | lld:pubmed |
| pubmed-article:3730499 | pubmed:dateRevised | 2009-11-19 | lld:pubmed |
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| pubmed-article:3730499 | pubmed:year | 1986 | lld:pubmed |
| pubmed-article:3730499 | pubmed:articleTitle | "Crystalline" myosin cross-bridge array in relaxed bony fish muscle. Low-angle x-ray diffraction from plaice fin muscle and its interpretation. | lld:pubmed |
| pubmed-article:3730499 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:3730499 | pubmed:publicationType | Research Support, Non-U.S. Gov't | lld:pubmed |
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