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Abscission, the final step of cytokinesis, mediates the severing of the membrane tether, or midbody, that connects two daughter cells. It is now recognized that abscission is a complex process requiring tight spatiotemporal regulation of its machinery to ensure equal chromosome segregation and cytoplasm content distribution between daughter cells. Failure to coordinate these events results in genetic...
The endosomal sorting complexes required for transport (ESCRTs) facilitate endosomal sorting of ubiquitinated cargo, MVB biogenesis, late stages of cytokinesis, and retroviral budding. Here we show that ubiquitin associated protein 1 (UBAP1), a subunit of human ESCRT-I, coassembles in a stable 1:1:1:1 complex with Vps23/TSG101, VPS28, and VPS37. The X-ray crystal structure of the C-terminal region...
The genome of Molluscum contagiosum virus (MCV) has a high G+C content, which largely differs from those of vaccinia virus (VAC) and other characterized poxviruses. This has precluded the use of DNA hybridization for the identification of MCV genes and the further establishment of the virus genetic map. To circumvent this problem, we have partially sequenced clones containing virus restriction endonuclease...
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