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 inner membrane of the nucleus is the membrane which separates the nuclear matrix from the intermembrane space. In mammals, the inner nuclear membrane is associated with heterochromatin and the nuclear lamina.
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.
Binds directly to lamin B1 and chromosomes in a mitotic phosphorylation-regulated manner. May play an important role in nuclear envelope reassembly at the end of mitosis and/or anchoring of the nuclear lamina and interphase chromosomes to the nuclear envelope.