How does the nucleus control which proteins are made by the ribosomes? How does protein synthesis enable DNA to control the cell? How does DNA direct protein synthesis from inside the nucleus? How do the nucleus and ribosomes work together to generate a protein?
The genetic code within each cell is held within “chromatin(染色质)”, a coiled(圈状的) structure made from lines of DNA wrapped around proteins.Because of chromatin, more than a meter of DNA can be squeezed inside a cell nucleus. Recently scientists have learned that the chromatin proteins...
How does the nucleosome condense DNA? DNA: DNA (Deoxyribonucleic acid) is the molecule that houses an organism's genetic information. DNA is found in the nucleus of every cell in the human body. Chromosomes are thread-like structures that contain DNA. As a result, chromosomes are condensed ge...
Journal of Cell BiologyCarmo-Fonseca, M. (2007) How genes find their way inside the cell nucleus. J. Cell Biol. 179, 1093-1094Carmo-Fonseca M. 2007. How genes find their way inside the cell nucleus. J Cell Biol 179: 1093-1094....
The suprachiasmatic nucleus (SCN) is known as the mammalian central circadian pacemaker with different types of neurons acting in concert while each neuron harbors a self-sustained molecular clockwork. But how system-level SCN signals record time was mysterious. ...
"The pore complex is an incredible piece of machinery; it can't let just anything into the nucleus of your cell, or you'd be in real trouble, but it's got to let quite a bit of stuff in. And somehow, the HIV capsid has figured out how to sneak in," Voth said. "The problem ...
1b(ii),(iii)) or even focused exclusively on the nucleus (Fig. 1b(iv)). Finally, areas of high density and low confidence were nonetheless given annotations in the Cellpose dataset and in some LiveCell categories (Fig. 1a(iv),c(i)), while they were often not segmented in other ...
At a higher energy, it can destroy the nucleus of an atom. This means that when ionizing radiation passes through the tissues of the body, it actually has enough energy to damage DNA. It's why gamma rays, for example, are good at killing cancer cells through radiation treatment. Ionizing...
During formation, the RBC eventually loses its nucleus and leaves the bone marrow as a reticulocyte. At this point, the reticulocyte contains some remnants of organelles. Eventually these organelles leave the cell and a mature erythrocyte is formed. RBCs last an average of 120 days in the bloods...
点穴疗法后，局部酸麻，皮下瘀血，全身出汗，甚则发烧，应（）