MUST READ DU JOUR: GOD IS IN THE DETAILS

The Washington Post ran a fascinating story today by Rick Weiss about new discoveries from the Human Genome Project that indicate so-called “junk DNA” thought to be little more than genetic seat fillers are actually complex, hardworking apparati.

Intricate Toiling Found In Nooks of DNA Once Believed to Stand Idle

The first concerted effort to understand all the inner workings of the DNA molecule is overturning a host of long-held assumptions about the nature of genes and their role in human health and evolution, scientists reported yesterday.

The new perspective reveals DNA to be not just a string of biological code but a dauntingly complex operating system that processes many more kinds of information than previously appreciated.

The findings, from a project involving hundreds of scientists in 11 countries and detailed in 29 papers being published today, confirm growing suspicions that the stretches of “junk DNA” flanking hardworking genes are not junk at all. But the study goes further, indicating for the first time that the vast majority of the 3 billion “letters” of the human genetic code are busily toiling at an array of previously invisible tasks.

The new work also overturns the conventional notion that genes are discrete packets of information arranged like beads on a thread of DNA. Instead, many genes overlap one another and share stretches of molecular code. As with phone lines that carry many voices at once, that arrangement has prompted the evolution of complex switching, splicing and silencing mechanisms — mostly located between genes — to sort out the interwoven messages.

The new picture of the inner workings of DNA probably will require some rethinking in the search for genetic patterns that dispose people to diseases such as diabetes, cancer and heart disease, the scientists said, but ultimately the findings are likely to speed the development of ways to prevent and treat a variety of illnesses.

One implication is that many, and perhaps most, genetic diseases come from errors in the DNA between genes rather than within the genes, which have been the focus of molecular medicine.

FOR THE FULL STORY (RICK WEISS IN THE WASHINGTON POST) CLICK HERE