Studies on the 14.5 nm Meridional X-Ray Diffraction Reflection During Length Changes of Intact Frog Muscle Fibres

1998 ◽  
pp. 247-258 ◽  
Author(s):  
P. J. Griffiths ◽  
H. Amenitsch ◽  
C. C. Ashley ◽  
M. A. Bagni ◽  
S. Bernstorff ◽  
...  
Keyword(s):  
Frog Muscle ◽  
Muscle Fibres ◽  
Diffraction Reflection ◽  
X Ray Diffraction ◽  
X Ray ◽  
Length Changes

scholarly journals A combined mechanical and X‐ray diffraction study of stretch potentiation in single frog muscle fibres

2000 ◽  
Vol 526 (3) ◽  
pp. 589-596 ◽  
Author(s):  
M. Linari ◽  
L. Lucii ◽  
M. Reconditi ◽  
M. E. Vannicelli Casoni ◽  
H. Amenitsch ◽  
...  
Keyword(s):  
Diffraction Study ◽  
Frog Muscle ◽  
Muscle Fibres ◽  
X Ray Diffraction ◽  
X Ray

scholarly journals Structural responses to the photolytic release of ATP in frog muscle fibres, observed by time-resolved X-ray diffraction

1999 ◽  
Vol 520 (3) ◽  
pp. 681-696 ◽  
Author(s):  
Andrey K. Tsaturyan ◽  
Sergey Y. Bershitsky ◽  
Ronald Burns ◽  
Zhen-He He ◽  
Michael A. Ferenczi
Keyword(s):  
Frog Muscle ◽  
Muscle Fibres ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray ◽  
Structural Responses

Epitaxial growth of BaO and SrO with new crystal structures using mass-separated low-energy O+ beams

1993 ◽  
Vol 8 (2) ◽  
pp. 321-323 ◽  
Author(s):  
Ryusuke Kita ◽  
Takashi Hase ◽  
Hiromi Takahashi ◽  
Kenichi Kawaguchi ◽  
Tadataka Morishita
Keyword(s):  
Lattice Constant ◽  
High Energy ◽  
Low Energy ◽  
Diffraction Reflection ◽  
High Energy Electron ◽  
Bulk Crystals ◽  
X Ray Diffraction ◽  
X Ray ◽  
Transmission Electron ◽  
Cubic Structure

The growth of BaO and SrO on SrTiO3(100) substrates using mass-separated low-energy (50 eV) O+ beams has been studied using x-ray diffraction, reflection high-energy electron diffraction, and high-resolution transmission electron microscopy. It was found that the BaO and SrO films have been epitaxially grown with new structures different from those of corresponding bulk crystals: The BaO films have a cubic structure with a lattice constant of 4.0 Å, and the SrO films have a tetragonal structure with a lattice constant of a = 3.7 Å parallel to the substrate and with c = 4.0 Å normal to the substrate.

scholarly journals X-ray diffraction studies of the contractile mechanism in single muscle fibres

2004 ◽  
Vol 359 (1452) ◽  
pp. 1883-1893 ◽  
Author(s):  
K. C. Holmes ◽  
D. R. Trentham ◽  
R. Simmons ◽  
Vincenzo Lombardi ◽  
Gabriella Piazzesi ◽  
...  
Keyword(s):  
Fibre Length ◽  
Elastic Response ◽  
Muscle Fibres ◽  
X Ray Diffraction ◽  
X Ray ◽  
Rapid Changes ◽  
Low Load ◽  
Intact Muscle ◽  
Motor Actions

The molecular mechanism of muscle contraction was investigated in intact muscle fibres by X–ray diffraction. Changes in the intensities of the axial X–ray reflections produced by imposing rapid changes in fibre length establish the average conformation of the myosin heads during active isometric contraction, and show that the heads tilt during the elastic response to a change in fibre length and during the elementary force generating process: the working stroke. X–ray interference between the two arrays of myosin heads in each filament allows the axial motions of the heads following a sudden drop in force from the isometric level to be measured in situ with unprecedented precision. At low load, the average working stroke is 12 nm, which is consistent with crystallographic studies. The working stroke is smaller and slower at a higher load. The compliance of the actin and myosin filaments was also determined from the change in the axial spacings of the X–ray reflections following a force step, and shown to be responsible for most of the sarcomere compliance. The mechanical properties of the sarcomere depend on both the motor actions of the myosin heads and the compliance of the myosin and actin filaments.

Structural changes during activation of frog muscle studied by time-resolved X-ray diffraction

1986 ◽  
Vol 188 (3) ◽  
pp. 325-342 ◽  
Author(s):  
M. Kress ◽  
H.E. Huxley ◽  
A.R. Faruqi ◽  
J. Hendrix
Keyword(s):  
Structural Changes ◽  
Frog Muscle ◽  
X Ray Diffraction ◽  
Time Resolved ◽  
X Ray
Sign in / Sign up

Export Citation Format

Share Document