The nuclear envelope is a membrane system which surrounds the nucleoplasm of eukaryotic cells. It is composed of the nuclear lamina, nuclear pore complexes and two nuclear membranes. The space between the two membranes is called the nuclear intermembrane space.
The membrane surrounding the nucleus. This term is used when it is not known if the protein is found in or associated with the inner or outer nuclear membrane.
The nuclear pore complex (NPC) constitutes the exclusive means of nucleocytoplasmic transport. NPCs allow the passive diffusion of ions and small molecules and the active bidirectional transport of macromolecules such as proteins, RNAs etc across the double-membrane nuclear envelope.The NPC is composed of at least 30 distinct subunits known as Nucleoporins (NUPs).
Component of the nuclear pore complex (PubMed:17410542). Has a role in the organization of the inner nuclear membrane proteins at the nuclear envelope (PubMed:22718353). In germ cells, plays a role in the nuclear localization of components of the dpp signaling pathways, such as Medea and phosphorylated Mad (PubMed:21696798). Binds to chromatin, and together with Nup62 and Nup93-1, contributes to karyosome morphology and chromatin organization including attachment to the nuclear envelope in oocytes and nurse cells (PubMed:22718353, PubMed:26341556). Has a role in female fertility including egg chamber development; in nurse cells, has a role in the organization of F-actin in subcortical and cytoplasmic actin filaments important for the transfer of cytoplasm from nurse cells to the growing oocytes (PubMed:9732281, PubMed:10511559, PubMed:17410542, PubMed:17277377). Has a role in male spermatogenesis and fertility (PubMed:9732281, PubMed:10511559). Has a role in germ line cell proliferation (PubMed:21696798). {Experimental EvidencePubMed:10511559, Experimental EvidencePubMed:17277377, Experimental EvidencePubMed:17410542, Experimental EvidencePubMed:21696798, Experimental EvidencePubMed:22718353, Experimental EvidencePubMed:26341556, Experimental EvidencePubMed:9732281, Curator InferencePubMed:17410542}.
National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory