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The protein encoded by the vaccinia virus F13L open reading frame is required for the wrapping of intracellular mature virions by cisternae derived from trans-Golgi or endosomal membranes and is an abundant, palmitylated component of the outer membrane of extracellular virions. To study the topology of the F13L protein, we constructed recombinant vaccinia viruses and plasmids that express the F13L...
In this article we report the initial biochemical, genetic, and electron microscopic analysis of a previously uncharacterized, 8.9-kDa, predicted thiol-redox protein. The name A2.5L was assigned to the corresponding vaccinia virus gene, which is conserved in all sequenced poxviruses. Multiple alignment analysis and secondary structure prediction indicated that the A2.5L gene product is an all-α-helical...
Based on two criteria, the tightness of packing of myosin rods within the backbone of the filament and the degree of order of the myosin heads, thick filaments isolated from a control group of rat hearts had three different structures. Two of the structures of thick filaments had ordered myosin heads and were distinguishable from each other by the difference in tightness of packing of the myosin rods...
cDNA clones encoding mouse skeletal muscle nebulin were expressed in Escherichia coli as thioredoxin fusion proteins and purified in the presence of 6M urea. These fragments, called 7a and 8c, contain 28 and 19 of the weakly repeating ∼35-residue nebulin modules, respectively. The nebulin fragments are soluble at extremely high pH, but aggregate when dialyzed to neutral pH, as assayed by centrifugation...
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