The nuclear basket of the nuclear pore complex is part of a higher-order filamentous network that is related to chromatin - PubMed (original) (raw)
The nuclear basket of the nuclear pore complex is part of a higher-order filamentous network that is related to chromatin
J Arlucea et al. J Struct Biol. 1998.
Abstract
We have achieved well-preserved nuclear basket structures in amphibian nuclear envelope spreads dried by the critical point method after tannic acid fixation, and we have compared these images with those obtained from conventional sections of amphibian oocyte nuclei. In cross sections, bundles of filaments from adjacent nuclear pore complexes were interconnected at regular distances, building up a higher-order network. Sometimes these bundles were observed to extend inward to amplified nucleoli located near the nuclear envelope. Furthermore, immunoelectron analysis indicated that DNA and histones were localized at these intranuclear filaments, suggesting a close relationship between chromatin and nuclear pore complexes. A model is proposed by which the intranuclear filaments associated with adjacent nuclear pore complexes create a regular higher-order network, which extends into the nucleus.
Copyright 1998 Academic Press.
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