Huda Zoghbi, of Baylor College of Medicine and the Howard Hughes Medical Institute and Juan Young, also of Baylor and colleagues report in the online Early Edition of the Proceedings of the National Academy of Science, posted the week of October 17, 2005, that the Rett Syndrome gene, MECP2, regulates RNA splicing. This work was funded in part by the Rett Syndrome Research Foundation (RSRF).
Rett Syndrome (RTT) is a severe neurological disorder diagnosed almost exclusively in girls. Children with RTT appear to develop normally until 6 to 18 months of age, when they enter a period of regression, losing speech and motor skills. Most develop repetitive hand movements, irregular breathing patterns, seizures and extreme motor control problems. RTT leaves its victims profoundly disabled, requiring maximum assistance with every aspect of daily living. There is no cure.
RTT is caused by mutations in a gene (MECP2) that regulates expression of other genes. Genes are made up of long stretches of nucleotide bases that are divided into exons (sequences that code for protein) and introns (non-coding sequences). Genes make proteins in a multi-step process. The first, called transcription, takes place in the cell nucleus where DNA is copied into RNA. The second step involves cutting out the introns and pasting together the exons to make up the mature RNA. This RNA is then translated into proteins.
Monica Coenraads | EurekAlert!
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Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
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