It is now firmly established that the contraction of muscle and many of the movements of
nonmuscle cells result from the interaction of two proteins, actin and myosin. These …

The mobility of membrane proteins was first demonstrated in the pioneering experiments of
Frye and Edidin [1], Taylor et al.[2] and Cone [3, 4]. These observations have undoubtedly …

Electron micrographs showing different cross-bridge orientations in different states of muscle
fibres, and X-ray diffraction patterns indicating axial cross-bridge disorder in contracting …

A comprehensive description is given of instrumental and theoretical methods employed to
make accurate measurements of rotational correlation times using passage saturation …

We have used electron paramagnetic resonance (EPR) spectra to study spin labels
selectively and rigidly attached to myosin heads in glycerinated rabbit psoas muscle fibers …

All organisms are capable of converting chemical potential energy into useful work. How it is
done is still somewhat a mystery despite progress that has been made in the last 25 years …

Kinesin is a motor protein that uses the energy derived from ATP hydrolysis to transport
organelles along microtubules. By analyzing the thermal fluctuation of microtubules tethered …

In order to investigate the roles of the physical states of phospholipid and protein in the
enzymatic behavior of the Ca2+-ATPase from sarcoplasmic reticulum, we have modified the …

The rotational motions of F-actin filaments and myosin heads attached to them have been
measured by saturation transfer electron paramagnetic resonance spectroscopy using spin …

The flexibility of F-actin complexed with saturating amounts of myosin subfragments has
been measured by the use of a dark-field light microscope and a high-sensitivity television …