11.2.The nuclear envelope ( NE) The nuclear envelope is a complex structure instead of a simple nuclear membrane concept as a nucleus boundary and barrier The ne allows selective communication between the cytoplasm and nucleus, consequentially, a distinctive biochemical environment is established within the nucleus and is able to control access to chromatin, which has many advantages for regulation of gene expression and dna replication The ne contains several components11.2. The nuclear envelope (NE) The nuclear envelope is a complex structure instead of a simple nuclear membrane concept as a nucleus’s boundary and barrier. The NE allows selective communication between the cytoplasm and nucleus, consequentially, a distinctive biochemical environment is established within the nucleus and is able to control access to chromatin, which has many advantages for regulation of gene expression and DNA replication. The NE contains several components: