NDLI: Detecting patterns of protein distribution and gene expression in silico

Content Provider	PubMed Central
Author	Geraghty, Michael T. Bassett, Doug Morrell, James C. Gatto, Gregory J. Bai, Jianwu Geisbrecht, Brian V. Phil, Hieter Gould, Stephen J.
Copyright Year	1999
Abstract	Most biological information is contained within gene and genome sequences. However, current methods for analyzing these data are limited primarily to the prediction of coding regions and identification of sequence similarities. We have developed a computer algorithm, CoSMoS (for context sensitive motif searches), which adds context sensitivity to sequence motif searches. CoSMoS was challenged to identify genes encoding peroxisome-associated and oleate-induced genes in the yeast Saccharomyces cerevisiae. Specifically, we searched for genes capable of encoding proteins with a type 1 or type 2 peroxisomal targeting signal and for genes containing the oleate-response element, a cis-acting element common to fatty acid-regulated genes. CoSMoS successfully identified 7 of 8 known PTS-containing peroxisomal proteins and 13 of 14 known oleate-regulated genes. More importantly, CoSMoS identified an additional 18 candidate peroxisomal proteins and 300 candidate oleate-regulated genes. Preliminary localization studies suggest that these include at least 10 previously unknown peroxisomal proteins. Phenotypic studies of selected gene disruption mutants suggests that several of these new peroxisomal proteins play roles in growth on fatty acids, one is involved in peroxisome biogenesis and at least two are required for synthesis of lysine, a heretofore unrecognized role for peroxisomes. These results expand our understanding of peroxisome content and function, demonstrate the utility of CoSMoS for context-sensitive motif scanning, and point to the benefits of improved in silico genome analysis.
Starting Page	2937
File Format	PDF
ISSN	10916490
e-ISSN	10916490
Journal	Proceedings of the National Academy of Sciences of the United States of America
Issue Number	6
Volume Number	96
Language	English
Publisher	The National Academy of Sciences
Publisher Date	1999-03-16
Access Restriction	Open
Rights Holder	The National Academy of Sciences
Subject Keyword	Research in Higher Education
Content Type	Text
Resource Type	Article
Subject	Multidisciplinary

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4	Project PI / Joint PI	Principal Investigator and Joint Principal Investigators of the project	Dr. B. Sutradhar bsutra@ndl.gov.in Prof. Saswat Chakrabarti will be added soon
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