www.sciencemag.org SCIENCE VOL 301 25 JULY 2003 443

E X H I B I T S

Regaining One’s Marbles
The Internet has accomplished what decades of public cam-
paigns and bitter squabbling haven’t: reuniting the famous mar-
ble frieze from the Parthenon in Athens, a sculpture 160 meters
long that wrapped the temple with religious and mythic im-
agery. Although the actual frieze remains in fragments housed in
Athens, London, and Paris, archaeologists and the public can now
study a complete online version at this site maintained by the
Greek government.

Created between 447 and 432 B.C., the meter-high frieze de-
picts some 360 human figures, more than 250 animals, and the
12 gods of Olympus, all in a sacred procession to the Acropolis.
Two hundred years ago, the British diplomat Lord Elgin sawed off
and carted away half of the frieze, and the marbles remain at the
center of a heated debate over repatriation. The virtual tour
brings together for the first time all the remaining stones from
Elgin’s section, now in the British Museum, and the sections held
by the Louvre and the Acropolis Museum. You can scrutinize dig-
itized photos and stone-by-stone descriptions of the frieze, or
read background information regarding its design and history.
This group of horsemen (above), for instance, formerly galloped
along the north side of the temple. Where stones are incomplete
due to damage, drawings of the missing sections dating back to
the 17th and 18th centuries supplement the photos.

zeus.ekt.gr/parthenonfrieze/index.jsp?lang=en&w=1152

R E S O U R C E S

Warming Up

to a Frigid Sea
Bering Climate, a new site
from the U.S. National
Oceanic and Atmospheric
Administration, offers a
wealth of data for research-
ers studying the ecosys-
tems and climate of the
Bering Sea and how they
might respond to global
warming. Such questions
are particularly important
because the sea supplies
half of the seafood eaten in
the United States. Visitors
can trawl more than 40 

data sets on ice cover, winter surface temperatures, salmon catches,
and other measurements. You can download the data, plot them, or
check for correlations between data sets. A photo gallery lets you
meet some of the sea’s denizens, such as this puffin (above), and a
plethora of links summons other sources of information.

www.beringclimate.noaa.gov/index.html

D A T A B A S E

The Lowdown on a Killer Bug
Tuberculosis, the disease that
slayed John Keats, Jane Austen,
and George Orwell, remains a
leading killer, responsible for
about 2 million deaths world-
wide every year. Researchers
working to foil the evasive TB
bacterium can round up plen-
ty of information on its genes
and proteins at TubercuList, a
genomic database from the
Pasteur Institute in Paris. The
site brims with data on some
4000 genes from Mycobac-
terium tuberculosis. Pick a
gene and learn the function of
the protein it encodes, call up
a map showing its chromoso-
mal location, or pinpoint near-
by genes. Each entry also lists
relevant references and lets
you download the gene’s DNA
sequence or the amino acid
sequence of its protein for fur-
ther analysis.

genolist.pasteur.fr/TubercuList

NETWATCH
edited by Mitch Leslie

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Send site suggestions to netwatch@aaas.org. Archive: www.sciencemag.org/netwatch

S O F T W A R E

Molecules on 

Parade
Aimed at everyone from drug de-
signers to researchers tracking the
nuances of protein evolution,
Chimera is a jazzy molecular model-
ing package from the Computer
Graphics Lab at the University of
California, San Francisco. Users can
import atomic coordinates from
databases such as the Protein Data
Bank or upload their own measure-
ments, then manipulate and analyze
molecular architecture. The program flags likely hydrogen bonds and pinpoints landmarks such as he-
lices or sheets within messy 3D data.You can create catchy graphics—for example, the program lets you
install windows in bulky molecules to expose their internal organization. What looks like a piece of
chewed bubblegum in this image (above) is a molecule of the antitumor drug netropsin wedged be-
tween two DNA strands. Chimera can also parse protein sequence data, aligning matching segments
and illustrating the structures they encode.The package is free for researchers in academia, government,
and nonprofit organizations, and its creators plan to release a revamped version every 6 months.

www.cgl.ucsf.edu/chimera

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http://science.sciencemag.org/


SOFTWARE: Molecules on Parade

DOI: 10.1126/science.301.5632.443b
 (5632), 443.301Science 

ARTICLE TOOLS http://science.sciencemag.org/content/301/5632/443.2

CONTENT
RELATED file:/content/sci/301/5632/netwatch.full

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(print ISSN 0036-8075; online ISSN 1095-9203) is published by the American Association for the Advancement ofScience 

© 2003 American Association for the Advancement of Science

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