BIOL 1090 Lecture Notes - Lecture 23: Nuclear Lamina, Nuclear Membrane, Nuclear Pore
Document Summary
Vesicles move along mts is powered by motor maps kinesin and dynein. Intermediate filaments (if) cytoskeletal structural componenets: non-polar and provide structural and mechanical support, encoded by a superfamily of proteins with diverse functions. Mostly used by plants but can also be used in animal cells. Has a nuclear envelope that is a membrane all around with nuclear pores and lamina. Outer and inner membrane continuous with er. Transcription and translation are separated between the nuclear content and cytoplasm. Allows limited movement of molecules between the nucleus and cytoplasm. In plant cells lamina is not made by lamina proteins. Bonded to inner membrane of nuclear envelope (ne) by integral membrane protein. Attachment site for chromatin: nuclear pores. Occur when inner and outer membranes fuse. Regulated movement of large molecules which is a slower movement. Signal (nls) a short stretch of positively charged amino acids within the protein sequence.
