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Figure 7
(a) Axial spacing changes of the three actin-based reflections in the transition from rest to activation at non-overlap length, rest to contraction at full overlap length, and contraction to stretching (1.4P0). The last set of columns shows the data when the stretch (∼4.5% of initial muscle length L0) was imposed to the rigor muscle. (b) Part of the radial projection net of the actin helical structure showing the angular movement of the centre of gravity of an actin monomer unit following the filament extensibility. h, P5.1 and P5.9 denote the axial rise of the actin unit, the pitches of the right- and left-handed genetic helices. Δ symbols and vertical and horizontal arrows show the magnitude and direction of their changes (see text).

Journal logoJOURNAL OF
SYNCHROTRON
RADIATION
ISSN: 1600-5775
Volume 6| Part 4| July 1999| Pages 875-890
doi:10.1107/S0909049599007025
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