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Found 1 result for PubMed for id: 15990381
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. 2002 Dec 24;99(26):16899-903.
doi: 10.1073/pnas.242603899. Epub 2002 Dec 11.

Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences

Robert L Strausberg  1 , Elise A Feingold, Lynette H Grouse, Jeffery G Derge, Richard D Klausner, Francis S Collins, Lukas Wagner, Carolyn M Shenmen, Gregory D Schuler, Stephen F Altschul, Barry Zeeberg, Kenneth H Buetow, Carl F Schaefer, Narayan K Bhat, Ralph F Hopkins, Heather Jordan, Troy Moore, Steve I Max, Jun Wang, Florence Hsieh, Luda Diatchenko, Kate Marusina, Andrew A Farmer, Gerald M Rubin, Ling Hong, Mark Stapleton, M Bento Soares, Maria F Bonaldo, Tom L Casavant, Todd E Scheetz, Michael J Brownstein, Ted B Usdin, Shiraki Toshiyuki, Piero Carninci, Christa Prange, Sam S Raha, Naomi A Loquellano, Garrick J Peters, Rick D Abramson, Sara J Mullahy, Stephanie A Bosak, Paul J McEwan, Kevin J McKernan, Joel A Malek, Preethi H Gunaratne, Stephen Richards, Kim C Worley, Sarah Hale, Angela M Garcia, Laura J Gay, Stephen W Hulyk, Debbie K Villalon, Donna M Muzny, Erica J Sodergren, Xiuhua Lu, Richard A Gibbs, Jessica Fahey, Erin Helton, Mark Ketteman, Anuradha Madan, Stephanie Rodrigues, Amy Sanchez, Michelle Whiting, Anup Madan, Alice C Young, Yuriy Shevchenko, Gerard G Bouffard, Robert W Blakesley, Jeffrey W Touchman, Eric D Green, Mark C Dickson, Alex C Rodriguez, Jane Grimwood, Jeremy Schmutz, Richard M Myers, Yaron S N Butterfield, Martin I Krzywinski, Ursula Skalska, Duane E Smailus, Angelique Schnerch, Jacqueline E Schein, Steven J M Jones, Marco A Marra; Mammalian Gene Collection Program Team
Affiliations

Generation and initial analysis of more than 15,000 full-length human and mouse cDNA sequences

Robert L Strausberg et al. Proc Natl Acad Sci U S A. .

Abstract

The National Institutes of Health Mammalian Gene Collection (MGC) Program is a multiinstitutional effort to identify and sequence a cDNA clone containing a complete ORF for each human and mouse gene. ESTs were generated from libraries enriched for full-length cDNAs and analyzed to identify candidate full-ORF clones, which then were sequenced to high accuracy. The MGC has currently sequenced and verified the full ORF for a nonredundant set of >9,000 human and >6,000 mouse genes. Candidate full-ORF clones for an additional 7,800 human and 3,500 mouse genes also have been identified. All MGC sequences and clones are available without restriction through public databases and clone distribution networks (see http:mgc.nci.nih.gov).

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Figures

Fig. 1.
Fig. 1.
Tests for identifying putative full-ORF cDNA clones. In the first test, 5′ ESTs first were compared with all available ORF-complete mRNA sequences from the same organism (human or mouse) in the RefSeq collection. When a 5′ EST aligned (>95% homology for 100 or more base pairs) at or upstream of an annotated translation start site, that clone was considered to contain a candidate full-ORF cDNA. However, if the 5′ EST aligned downstream from an annotated translational start site, that clone was eliminated from consideration, although some of these may be full-ORF clones with an alternate 5′ translational start site. Any 5′ ESTs that did not match a RefSeq sequence were subjected to additional tests. In the second test, six possible frame translations were compared with the subset of GenBank protein records originating from Protein Information Resource (15), Protein Data Base (16), or SwissProt (17) that begin with methionine. This test identifies ESTs from genes with an N terminus similar but not identical to a known protein. Thus, in cases where a protein match (<90% identity but with an E value of less than or equal to 10−6) was detected and incorporated the known initiating methionine, the associated cDNA clone was considered a candidate to have a complete ORF. In the third test, we compared each 5′ EST to a collection of predicted genes derived from the human genome sequence by genomescan (18). When a 5′ EST aligned (95% identity for 100 or more bp) to a gene prediction that begins with ATG, the associated clone was considered a candidate. In the fourth test, we used the new program hkscan, which looks for evidence of a transition from noncoding to coding sequence (described in Materials and Methods).
Fig. 2.
Fig. 2.
Efficacy of cDNA clone selection algorithms used by the MGC Program. Three of the tests (protein homology, genomescan, and hkscan), were retroactively assessed for their ability to identify full-ORF clones within a set of 5,653 established full-ORF RefSeq sequences. Only 301 of the RefSeq sequences were identified by all three of the tests, whereas 2,002 were identified by only one of the three tests. When used in combination, the three tests were effective in identifying 5,601 (>99%) of the RefSeq sequences.
Fig. 3.
Fig. 3.
ORF sizes of MGC full-ORF genes compared with RefSeq genes. The ORFs of MGC full-ORF genes and RefSeq genes were binned in 100-nt increments. The absolute numbers of MGC and RefSeq genes are compared for each size increment. RefSeq genes are represented by a solid line, the total of MGC genes is shown with the dashed lines, and MGC genes within the RefSeq set are depicted with dotted lines.
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