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).
Plays a role in the nuclear pore complex (NPC) assembly and/or maintenance. NUP98 and NUP96 are involved in the bidirectional transport across the NPC (PubMed:33097660). May anchor NUP153 and TPR to the NPC. In cooperation with DHX9, plays a role in transcription and alternative splicing activation of a subset of genes (PubMed:28221134). Involved in the localization of DHX9 in discrete intranuclear foci (GLFG-body) (PubMed:28221134). {Experimental EvidencePubMed:15229283, Experimental EvidencePubMed:33097660}. (Microbial infection) Interacts with HIV-1 capsid protein P24 and nucleocapsid protein P7 and may thereby promote the integration of the virus in the host nucleus (in vitro) (PubMed:23523133). Binding affinity to HIV-1 CA-NC complexes bearing the capsid change Asn-74-Asp is reduced (in vitro) (PubMed:23523133). {Experimental EvidencePubMed:23523133}.
Note=Chromosomal aberrations involving NUP98 have been found in acute myeloid leukemia. Translocation t(7;11)(p15;p15) with HOXA9 (PubMed:8563753). The chimera includes NUP98 intrinsic disordered regions which contribute to aberrant liquid-liquid phase separation puncta of the chimera in the nucleus. This phase-separation enhances the chimera genomic targeting and induces organization of aberrant three-dimensional chromatin structures leading to tumorous transformation (PubMed:34163069). Translocation t(11;17)(p15;p13) with PHF23 (PubMed:17287853). {Experimental EvidencePubMed:17287853, Experimental EvidencePubMed:34163069, Experimental EvidencePubMed:8563753}. Note=A chromosomal aberration involving NUP98 has been found in M0 type acute myeloid leukemia. Translocation t(4;11)(q23;p15) with RAP1GDS1. {Experimental EvidencePubMed:16419055}. Note=A chromosomal aberration involving NUP98 has been found in T-cell acute lymphocytic leukemia. Translocation t(4;11)(q23;p15) with RAP1GDS1. {Experimental EvidencePubMed:10477737, Experimental EvidencePubMed:10929031}. Note=A chromosomal aberration involving NUP98 has been found in M5 type acute myeloid leukemia. Translocation t(11;12)(p15;p13) with KDM5A. {Experimental EvidencePubMed:23531517}. Note=Chromosomal aberrations involving NUP98 have been found in childhood acute myeloid leukemia. Translocation t(5;11)(q35;p15.5) with NSD1. Translocation t(8;11)(p11.2;p15) with WHSC1L1. {Experimental EvidencePubMed:16028218}. Note=Chromosomal aberrations involving NUP98 have been found in M7 type childhood acute myeloid leukemia. Translocation t(11;12)(p15;p13) with KDM5A. {Experimental EvidencePubMed:16419055, Experimental EvidencePubMed:23531517}. Note=A chromosomal aberration involving NUP98 is found in a form of therapy-related myelodysplastic syndrome. Translocation t(11;20)(p15;q11) with TOP1. {Experimental EvidencePubMed:16028218}. Note=A chromosomal aberration involving NUP98 is found in a form of T-cell acute lymphoblastic leukemia (T-ALL). Translocation t(3;11)(q12.2;p15.4) with LNP1. {Experimental EvidencePubMed:16028218}. Note=A chromosomal aberration involving NUP98 is associated with pediatric acute myeloid leukemia (AML) with intermediate characteristics between M2-M3 French-American-British (FAB) subtypes. Translocation t(9;11)(p22;p15) with PSIP1/LEDGF. The chimeric transcript is an in-frame fusion of NUP98 exon 8 to PSIP1/LEDGF exon 4. {Experimental EvidencePubMed:16028218}. Note=A chromosomal aberration involving NUP98 has been identified in acute leukemias. Translocation t(6;11)(q24.1;p15.5) with CCDC28A. The chimeric transcript is an in-frame fusion of NUP98 exon 13 to CCDC28A exon 2. Ectopic expression of NUP98-CCDC28A in mouse promotes the proliferative capacity and self-renewal potential of hematopoietic progenitors and rapidly induced fatal myeloproliferative neoplasms and defects in the differentiation of the erythro- megakaryocytic lineage. {Experimental EvidencePubMed:16028218}.
National and Kapodistrian University of Athens
Department of Biology
Biophysics & Bioinformatics Laboratory