Kémiai kutatás, oktatás, ismeretterjesztés fóruma

[ChemoNet <chemonet AT mail.datanet.hu>]

Tisztelt Kollegak!

A Nature alabbi levelet tovabbitom.

Udvozlettel, Silberer Vera



In the May 18th issue of Nature, an international group of scientists
based
mainly in Japan and Germany will report the DNA sequence of human
chromosome
21. The electronic version of this paper will be freely available at
http://www.nature.com/genomics/ from May 8th prior to the print
publication.

To request a free copy of Nature containing the Chromosome 21 paper, use
the
order form at:
http://www.nature.com/marketing/FreeCopy/

Chromosome 21 is the second human chromosome sequence to be documented,
encompassing more than 33 million base pairs of DNA, and its publication
therefore marks a major scientific milestone. A striking feature of the
chromosome is that it contains less than 300 discernible genes. This
implies
that the whole human genome may contain no more than 40,000 genes, many
fewer than previously thought.

The chromosome sequence reveals the organisation of a number of genes
linked
to specific human disorders, and will speed the search for several more
disease-linked genes. The availability of this sequence will also
provide
valuable tools for investigating the basis of Down syndrome, which is
caused
by the inheritance of three (rather than the normal two) copies of
chromosome 21.

These free copies of Nature are produced with support from Applied
Biosystems - http://www.appliedbiosystems.com. To bring this offer to
the
attention of a friend or colleague simply forward this e-mail.

Yours sincerely

Richard Gallagher
Biological Sciences Editor
Nature