New insights into protein synthesis and Hepatitis C infections
... are assembled out of amino acids according to the instructions contained within the genes. These genetic instructions are carried from the DNA inside a cell's nucleus out into the cell's cytoplasm via messenger RNA (mR...MicroRNA may have fail-safe role in limb development
...ers focused on DNA, which contains all the genetic instructions for the human body, and RNA, which translates DNA's message into proteins - the building blocks of cells, organs and all of the various systems of the body. Unnoticed next to the main ingredients, microRNAs were considered to be "junk" DNA, leftovers...Bionic fiction becomes science fact
...ory feedback from the hand to reach the brain, and instructions to come from the brain to control the hand, at least in part. Coordinated by Professor Paolo Dario with Professor Maria Chiara Carrozza leading the development of the hand, the project united researchers from Germany, Spain, Italy and Denmark. So far...Silenced gene in worm shows role in regeneration
...m. This finding suggests something surprising: the instructions that a daughter stem cell needs to differentiate for regeneration or for maintaining tissue structure begin to be defined at the time of division of its parent cell. "Once the smedwi-2 molecule is eliminated, the animal is destined to die since the ...Robo-rodent gets 'touchy-feely'
...', its CPU. We just switch it on without giving it instructions of any kind," says Simon Bovet, a Ph.D. student at the University of Zurich. When he threw the switch his robot started moving about the room but always returned to the spot where it began. "I think emergent behaviour like this will be a major area i...New microscope allows scientists to track a functioning protein with atomic-level precision
...A sequences code for genes, which contain explicit instructions for building a specific protein. A typical DNA ladder carries thousands of genes that encode thousands of proteins, which keep the organism alive and functioning. A single misplaced letter in gene's DNA sequence--a G substituted for a T, for example...Wnt signaling controls the fate of stem cells in adult brains
... and well as depression. Identifying the molecular instructions that push neuronal stem cells down a certain path of specialization is a first step towards generating exactly the cell types needed to replace lost brain cells. Throughout life, new brain cells or neurons are born in two small areas of mammalian br...Study sheds light on signaling mechanism in stem cells, cancer
...ng of Hedgehog signals into the nucleus, where the instructions are issued. Just how or what the primary cilium is doing to promote Smoothened's activity is not clear, say the researchers. However, its involvement in the process is a revelation. Scientists elsewhere reported in Nature in (Nov. 6, 2003) that remo...Study provides insight into cellular defenses against genetic mutation
...uctures and carry out its functions. While genetic instructions are stored in chains of deoxyribonucleic acids (DN...o cellular factories called ribosomes that receive instructions for building proteins by "reading" mRNA templates. Over time, genes evolve to show changes in their ...UT Southwestern researchers find alterations in brain's circuitry caused by cocaine
...rs have to be able to access the gene and copy its instructions for making other proteins. Typically, a group of proteins called histones tightly binds genes, keeping them from being accessed by transcription factors. Normally, histones undergo chemical changes to convert them from tightly binding a gene to a sta......a regulated manner, allowing reading of the gene's instructions by the cellular machinery. When the gene returns to its inactive or repressed state, the Htz1 nucleosome is reconstructed, again blocking the machinery from reading the gene. Cairns, an associate professor in the Department of Oncological Sciences...UCSD study shows 'junk' DNA has evolutionary importance
... called "junk" DNA because it does not contain the instructions for protein-coding genes and appears to have little or no function is actually critically important to an organism's evolutionary survival, according to a study conducted by a biologist at the University of California, San Diego. In the October 20 is...Flu virus reported to resist drug envisioned for pandemic
... as a powder and requires that a clinician provide instructions for use. Thus, it is more cumbersome to administer than the orally delivered Tamiflu. These flu-fighting drugs, says Kawaoka, are by no means a replacement or alternative to a vaccine. Effective vaccines can confer immunity, preventing the virus from...University of Delaware researchers develop cancer 'nanobomb'
...ells as well as the biological pathways that carry instructions to generate additional cancerous cells and the small veins that nourish the diseased cells. Also, it can be spread over a wide area to create structural damage to the cancer cells that are close by. The nanobombs are superior to a variety of curren......r Cell. Both healthy and damaged proteins begin as instructions in genes. Cells read this information and create an RNA molecule, a template that will be used to create proteins. RNAs usually contain extra bits of code that have to be cut out before they can be used. During this cut-and-paste operation, cells att...Studying climate change in the Arctic: Scientists and students working together
...ed, so Holmes provided her with sample bottles and instructions on how to take samples from the Lena throughout the winter. Since September 2003, she has collected samples at 2-week intervals, often taking a snowmobile driven by her father out to holes in the ice and occasionally in temperatures as low as 55 degr...Researchers find how one genetic variation may leave some people vulnerable to addiction
...d processing of messenger RNA (mRNA). mRNA carries instructions from the DNA inside a cell's nucleus to the rest of the cell, telling the cell that it's time to make more protein. Surprisingly, the mu opioid receptor genes that carried the A118G variation (such variations in genes are called single-nucleotide pol...Hopkins scientists uncover 'tags' that force proteins to cell surface
...roteins are made deep inside the cell; the genetic instructions for building proteins are in the cell nucleus, and proteins are assembled in a nearby "factory" in the cell. Also, scientists have long known that proteins prefer to stay put in this factory, the endoplasmic reticulum, unless they contain specific tr...Cellular dumping site is not garbage after all
...earch. To live and grow, cells convert the genetic instructions stored in DNA into proteins. However, only some of the myriad instructions stored in genes are useful at any one time. Researchers want to figure out how cells switch from man...Discovery will aid identification of misregulated genes in Rett Syndrome
...very aspect of daily living. There is no cure. The instructions needed to make the cells of all living organisms are contained in their DNA, which is organized as two complementary strands with bonds between them that can be "unzipped" like a zipper. DNA is encoded with building blocks called bases which can be ...