Sentences with phrase «nuclear envelope»
The nuclear envelope is a protective layer made of two membranes that surround the nucleus. It acts like a barrier, controlling what enters and exits the nucleus and helps keep the DNA safe inside. Full definition
A new nuclear envelope forms around each set of chromosomes, and new cell membranes separate the two daughter cells.
sciencedaily.com
Recent advances include the discovery of a mode by which nontelomeric heterochromatin can acquire chromosome end - protection capacity, as well as expansion of the known repertoire of telomeres and centromeres to include the control of nuclear envelope breakdown and spindle formation.
Required to maintain individual mitotic chromosomes dispersed in the cytoplasm following nuclear envelope disassembly (PubMed: 27362226).
We found that CI resulted from delayed nuclear envelope breakdown of the male pronucleus in Nasonia vitripennis.
The first in her family to earn a doctoral degree, Dr. Higa completed her thesis at the University of Utah in Oncological Sciences where she studied the roles of nuclear pore proteins in nuclear export and nuclear envelope breakdown.
Pores, composed of many different proteins, the nucleoporins, cross the nuclear envelope and monitor the heavy traffic of the molecules, which takes place between the nucleus and the cytoplasm of the cell.
At the same time, coauthor Peter Adams, from the University of Glasgow, published a previous study on the breakdown of the nuclear lamina in which he observed a peculiar protrusion, or blebbing, of the nuclear envelope into the cytoplasm, and these blebs contained DNA, nuclear lamina proteins, and chromatin (the nuclear structures in which genes reside).
After DNA replicates, the nuclear envelope surrounding it dissolves.
«We have been able to visualise chromatin, which is the protein structure that controls DNA expression and the nuclear envelope.
Pores in the nuclear envelope consist of tetramers with a variable lateral offset that may allow the opening to be adjusted according to the size of molecules passing through.
One of those structures is embedded in the nuclear envelope, the barrier surrounding the chromosomes.
Somehow, the microtubules interact with the nuclear envelope to send a signal to increase mobility of damaged DNA.
«The DNA tether seems to keep the nuclear envelope from closing, and then the chromosome fragment just glides right in at the last moment,» Sullivan said.
We further found that Klaroid (SUN) and Klarsicht (KASH) co-localize with centromeres at the nuclear envelope and are required for proper chromosome motions and pairing.
Mud is also required to maintain the integrity of the nuclear envelope and for the correct assembly of the synaptonemal complex.
The nucleus is surrounded by a double membrane (commonly referred to as a nuclear envelope), with pores that allow material to move in and out.
Stained for DNA with DAPI (Blue), the nuclear envelope with LaminB1 (Green) and the centrosome marker γ - tubulin (Red).
However, upon entry into mitosis, chromosomes are compacted into thick fibres and are released into the cytoplasm after disassembly of the nuclear envelope.
During interphase, chromosomes are isolated from the cytoplasm by a membrane, the nuclear envelope, and fill the entire nuclear space as loosely organised chromosome territories.