Latent memory of cells comes to life
...ither allow, or prevent, the expression of the DNA wrapped around them. Every time a cell divides into new cells, its double-stranded DNA splits into two single strands, which then each produce a new double-strand. Nucleosomes though are not duplicated like the DNA-strands. Rather, they are distributed be...St. Jude study yields secrets of chromosome movement
...issue of Molecular Cell. All of the cells DNA is wrapped around a series of structures, called histone octamers, to generate chromatinmuch like thread wound around a spool. This chromatin is then further compacted to form the characteristic, thick structures commonly recognized in illustrations and photogr...Scientists discover role of enzyme in DNA repair
... be able to recognize and repair breaks in tightly wrapped and inaccessible DNA. During immunoglobulin gene recombination, DNA is rendered accessible by the process of transcription, which unzips double-stranded DNA as part of the conversion of genetic information into functional proteins. While transcript...Nanotechnology helps scientists make bendy sensors for hydrogen vehicles
... shock resistance. The sensors are also able to be wrapped around curved surfaces, and this proves useful in many applications, notably in vehicles, aircraft and portable electronics. The leakage of hydrogen caused by tiny pinholes in the pipe of a space shuttle, for example, could not be easily detected b...Doernbecher Children's Hospital scientist earns coveted Javits award
...nerve fibersin the white matter are actively being wrapped in myelin, the insulationthat allows nerve fibers to rapidly transmit signals in the brain. Dr.Back and his team have shown that during human brain development, thereis a critical time period when the cells (oligos or oligodendrocyteprogenitors) requ...