Abstract:
BACKGROUND:The preferred habitat of a given bacterium can provide a hint of which types of enzymes of potential industrial interest it might produce. These might include enzymes that are stable and active at very high or very low temperatures. Being able to accurately predict this based on a genomic sequence, would thus allow for an efficient and targeted search for production organisms, reducing the need for culturing experiments. RESULTS:This study found a total of 40 protein families useful for distinction between three thermophilicity classes (thermophiles, mesophiles and psychrophiles). The predictive performance of these protein families were compared to those of 87 basic sequence features (relative use of amino acids and codons, genomic and 16S rDNA AT content and genome size). When using naïve Bayesian inference, it was possible to correctly predict the optimal temperature range with a Matthews correlation coefficient of up to 0.68. The best predictive performance was always achieved by including protein families as well as structural features, compared to either of these alone. A dedicated computer program was created to perform these predictions. CONCLUSIONS:This study shows that protein families associated with specific thermophilicity classes can provide effective input data for thermophilicity prediction, and that the naïve Bayesian approach is effective for such a task. The program created for this study is able to efficiently distinguish between thermophilic, mesophilic and psychrophilic adapted bacterial genomes.
journal_name
BMC Genomicsjournal_title
BMC genomicsauthors
Jensen DB,Vesth TC,Hallin PF,Pedersen AG,Ussery DWdoi
10.1186/1471-2164-13-S7-S3subject
Has Abstractpub_date
2012-01-01 00:00:00pages
S3issn
1471-2164pii
1471-2164-13-S7-S3journal_volume
13 Suppl 7pub_type
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