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Sequencing and Analysis of Neanderthal Genomic DNA
James P. Noonan,1,2Graham Coop,3Sridhar Kudaravalli,3Doug Smith,1Johannes Krause,4Joe Alessi,1Feng Chen,1Darren Platt,1Svante Pääbo,4Jonathan K. Pritchard,3Edward M. Rubin1,2*
Our knowledge of Neanderthals is based on a limited number ofremains and artifacts from which we must make inferences abouttheir biology, behavior, and relationship to ourselves. Here,we describe the characterization of these extinct hominids froma new perspective, based on the development of a Neanderthalmetagenomic library and its high-throughput sequencing and analysis.Several lines of evidence indicate that the 65,250 base pairsof hominid sequence so far identified in the library are ofNeanderthal origin, the strongest being the ascertainment ofsequence identities between Neanderthal and chimpanzee at siteswhere the human genomic sequence is different. These resultsenabled us to calculate the human-Neanderthal divergence timebased on multiple randomly distributed autosomal loci. Our analysessuggest that on average the Neanderthal genomic sequence weobtained and the reference human genome sequence share a mostrecent common ancestor 706,000 years ago, and that the humanand Neanderthal ancestral populations split 370,000 years ago,before the emergence of anatomically modern humans. Our findingthat the Neanderthal and human genomes are at least 99.5% identicalled us to develop and successfully implement a targeted methodfor recovering specific ancient DNA sequences from metagenomiclibraries. This initial analysis of the Neanderthal genome advancesour understanding of the evolutionary relationship of Homo sapiensand Homo neanderthalensis and signifies the dawn of Neanderthalgenomics.
1 U.S. Department of Energy Joint Genome Institute, 2800 Mitchell Drive, Walnut Creek, CA 94598, USA. 2 Genomics Division, Lawrence Berkeley National Laboratory, 1 Cyclotron Road, Berkeley, CA 94720, USA. 3 Department of Human Genetics, University of Chicago, 920 East 58th Street, Chicago, IL 60637, USA. 4 Max Planck Institute for Evolutionary Anthropology, Deutscher Platz 6, 04103, Leipzig, Germany.
* To whom correspondence should be addressed. E-mail: emrubin{at}lbl.gov
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In Science Magazine
LETTERS
Thomas C. Erren, Paul Cullen, Michael Erren;, Edward M. Rubin, and James P. Noonan (23 March 2007) Science315 (5819), 1664.
[DOI: 10.1126/science.315.5819.1664] |Full Text »|PDF »
NEWS FOCUS
Elizabeth Pennisi (17 November 2006) Science314 (5802), 1068.
[DOI: 10.1126/science.314.5802.1068] |Summary »|Full Text »|PDF »
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