Nucleus, nuclear pore complex {By
SimilarityUniProtKB:P49792}. Note=Localizes to annulate lamellae, stacked membrane sheets of the endoplasmic reticulum. Localizes to granules which travel from nurse cells into the ooplasm through ring canals connecting the cytoplasm of the two cell types. {Experimental EvidencePubMed:31626769}.
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 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).
E3 SUMO-protein ligase (By similarity). Component of the nuclear pore complex (NPC), a complex required for trafficking across the nuclear envelope (PubMed:17682050). Required for nuclear import of nuclear localization signal (NLS)-containing proteins in an importin alpha/importin beta-dependent manner, but also for the nuclear import of specific proteins such as phosphorylated Mad or the sesquiterpenoid juvenile hormone receptor Met as part of the juvenile hormone signal transduction pathway (PubMed:27979731, PubMed:17682050, PubMed:17682050). Plays a role in nuclear mRNA export by recruiting the mRNA transport complex composed of Nxt1 and sbr/Nxf1 to the NPC (PubMed:14729961). Essential during germline development for transposon silencing and piRNA biogenesis probably by regulating piwi localization to the nucleus (PubMed:29735528). During oogenesis, required to form granules that modulate the biogenesis of annulate lamellae containing nuclear pore complex components (PubMed:31626769). {By
SimilarityUniProtKB:P49792, Experimental EvidencePubMed:14729961, Experimental EvidencePubMed:17682050, Experimental EvidencePubMed:20547758, Experimental EvidencePubMed:27979731, Experimental EvidencePubMed:29735528, Experimental EvidencePubMed:31626769}.