Latest Ribosome Stories

2009-03-09 12:15:00

Harvard University researchers said they have taken an important step toward making an artificial life form by creating a ribosome, known as the cell's factory, Reuters reported. The proteins that carry out key business for all forms of life are created by the ribosome. Messenger RNA carries DNA's genetic instructions to a cell's ribosome, which then cooks up the desired protein. All living organism from bacteria to humans uses a ribosome, and scientists say they are all strikingly similar....

2009-02-04 10:51:28

A mathematical model developed at the Weizmann Institute has revealed how single-celled organisms regulate their activities for maximum efficiency The bacterium Escherichia coli, one of the best-studied single-celled organisms around, is a master of industrial efficiency. This bacterium can be thought of as a factory with just one product: itself. It exists to make copies of itself, and its business plan is to make them at the lowest possible cost, with the greatest possible efficiency. ...

2008-08-31 13:15:00

The tick-tock of your biological clock may have just gotten a little louder. Researchers at the University of Georgia report that the number of genes under control of in living things than suspected only a few years ago. The biological clock in a much-studied model organism is dramatically higher than previously reported. The new study implies that the clock may be much more important "This new finding may help to explain why the clock is so far-reaching in its effects on the organism," said...

2008-08-21 17:50:00

A new study of the ribosome, the cell's protein-building machinery, sheds light on the oldest branches of the evolutionary tree of life and suggests that differences in ribosomal structure between the three main branches of that tree are "molecular fossils" of the early evolution of protein synthesis. The new analysis, from researchers at the University of Illinois, reveals that key regions of the ribosome differ between bacteria and archaea, microbes that the researchers say are genetically...

2008-08-13 09:00:22

A U.S. study of transfer RNA is challenging long-held theories concerning the evolutionary history of protein synthesis. University of Illinois researchers report the dual functions of transfer RNA, or tRNA -- a molecule that delivers amino acids to the protein-building machinery of the cell -- apparently originated independently. "Structure is highly conserved, capturing information that is evolutionarily deep," said Professor Gustavo Caetano-Anolles, who led the study. "It was only...

2008-04-08 15:45:00

Research archive doubles in size since 2004The Protein Data Bank (PDB) based at Rutgers, The State University of New Jersey, and the University of California-San Diego (UCSD) this month reached a significant milestone in its 37-year history. The 50,000th molecule structure was released into its archive, joining other structures vital to pharmacology, bioinformatics and education. With its origins in a handwritten petition circulated at a scientific meeting, the PDB is the single worldwide...

2007-03-20 08:20:00

Researchers at the University of California, Santa Cruz, have determined the three-dimensional structure of an RNA enzyme, or "ribozyme," that carries out a fundamental reaction required to make new RNA molecules. Their results provide insight into what may have been the first self-replicating molecule to arise billions of years ago on the evolutionary path toward the emergence of life. In all forms of life known today, the synthesis of DNA and RNA molecules is carried out by enzymes made of...

2006-08-23 08:59:08

Water, that molecule-of-all-trades, is famous for its roles in shaping the Earth, sustaining living creatures and serving as a universal solvent. Now, researchers at the University of Michigan and the Academy of Sciences of the Czech Republic have uncovered two previously unknown roles for water in RNA enzymes, molecules which themselves play critical roles in living cells and show promising medical applications. The researchers' findings will be published online in the Proceedings of the...

2005-11-03 14:20:40

A new, sharper picture of the nano-machine that translates our genetic program into proteins promises to help researchers explain how some types of antibiotics work and could lead to the design of better ones. The high-resolution snapshots of the bacterial ribosome were captured by scientists at the University of California, Berkeley, and Lawrence Berkeley National Laboratory (LBNL) with the lab's Advanced Light Source, which generates intense beams of X-rays that can reveal unprecedented...

2005-10-25 19:38:04

With their latest discovery, researchers have significantly advanced the understanding of how human cells protect themselves from constant and potentially destructive changes in gene expression. According to an article published in this month's Nature Structural & Molecular Biology, the research is important because the protection itself can contribute to disease, and the ability to side-step it may lead to new treatments for hundreds of genetic disorders. The blueprint for the human...

Word of the Day
  • A rich embroidered or brocaded silk fabric woven originally with a warp of gold thread.
'Baudekin' seems to be an alternative form of 'baldachin,' from the Italian 'Baldacco,' Baghdad, the city where the material was made.