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 outer membrane of the nucleus is the membrane facing the cytoplasm. In mammals, the outer nuclear membrane is continuous in many places with the rough endoplasmic reticulum and is dotted with ribosomes.
Mediates the transfer of lipids between membranes at organelle contact sites (PubMed:30093493, PubMed:24036347, PubMed:22442115). Binds phospholipids, including phosphatidic acid (PA), phosphorylated phosphatidylinositol (PI), phosphatidylcholine (PC), phosphatidylethanolamine (PE), ceramide, and phosphatidylserine (PS) (PubMed:30093493, PubMed:34830155, PubMed:28122955, PubMed:28334785). Involved in mitochondrial lipid homeostasis, in a MCP1-dependent manner (PubMed:27280386, PubMed:34830155, PubMed:32690699). Involved in cortical reticulophagy (also known as cortical endoplasmic reticulum (ER) macroautophagy), acting at the late endosome to package ER into autophagosomes (PubMed:32690699). Involved in the formation of the prospore membrane during sporulation, in a SPO71-dependent manner (PubMed:24036347, PubMed:22442115). Involved in Golgi vesicle transport, in a CDC31-dependent and ARF1-dependent manner (PubMed:28122955, PubMed:9314526, PubMed:34830155). Plays a role in actin cytoskeleton organization (PubMed:28334785). {Experimental EvidencePubMed:22442115, Experimental EvidencePubMed:24036347, Experimental EvidencePubMed:27280386, Experimental EvidencePubMed:28122955, Experimental EvidencePubMed:28334785, Experimental EvidencePubMed:30093493, Experimental EvidencePubMed:32690699, Experimental EvidencePubMed:34830155, Experimental EvidencePubMed:9314526}.