Cell membrane {By
Similarity}; Single-pass type II membrane protein {By
Similarity}. Nucleus membrane {By
Similarity}; Single- pass type II membrane protein {By
Similarity}. Cytoplasmic vesicle membrane {By
Similarity}; Single-pass type II membrane protein {By
Similarity}. Note=Found at nuclear and plasma membranes. Enriched in undifferentiated myoblasts near the plasma membrane in puncate structures (By similarity). Concentrated at the membrane sites of both myoblast-myoblast and myoblast-myotube fusions. Detected at the plasmalemma in endothelial cells lining intact blood vessels. {By
Similarity, ECO:0000269|PubMed:16280346, ECO:0000269|PubMed:17702744}.
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.