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Mol Cell Biol. 1984 October; 4(10): 2231-2234
ABSTRACT
The pathway of vesicular stomatitis virus N protein from synthesis to assembly into capsids was studied by use of detergent extraction of infected HeLa cells together with protein cross-linking. One half of the newly synthesized N protein was extracted with the soluble cell proteins and, when cross-linked, never formed the N-N dimer characteristic of mature nucleocapsids. In contrast, the cytoskeleton-bound N protein first showed a diffuse spectrum of protein-protein cross-links but, after a lag of 40 min, assumed the cross-link pattern of N protein in nucleocapsids. The efficiency of forming N-N cross-linked dimers is the same for N protein on the skeleton as in nucleocapsids derived from mature virus, suggesting very similar configurations. However, the N protein bound on the skeletal framework formed several additional cross-links that were not found in mature virus and were apparently formed to cellular proteins estimated to be ca. approximately 46,000 and 60,000 in molecular weight.
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