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Measuring and analyzing tissue specificity of human genes and protein complexes.


ABSTRACT: Proteins and their interactions are essential for the survival of each human cell. Knowledge of their tissue occurrence is important for understanding biological processes. Therefore, we analyzed microarray and high-throughput RNA-sequencing data to identify tissue-specific and universally expressed genes. Gene expression data were used to investigate the presence of proteins, protein interactions and protein complexes in different tissues. Our comparison shows that the detection of tissue-specific genes and proteins strongly depends on the applied measurement technique. We found that microarrays are less sensitive for low expressed genes than high-throughput sequencing. Functional analyses based on microarray data are thus biased towards high expressed genes. This also means that previous biological findings based on microarrays might have to be re-examined using high-throughput sequencing results.

SUBMITTER: Emig D 

PROVIDER: S-EPMC3186740 | biostudies-literature | 2011 Aug

REPOSITORIES: biostudies-literature

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Measuring and analyzing tissue specificity of human genes and protein complexes.

Emig Dorothea D   Kacprowski Tim T   Albrecht Mario M  

EURASIP journal on bioinformatics & systems biology 20110804 1


Proteins and their interactions are essential for the survival of each human cell. Knowledge of their tissue occurrence is important for understanding biological processes. Therefore, we analyzed microarray and high-throughput RNA-sequencing data to identify tissue-specific and universally expressed genes. Gene expression data were used to investigate the presence of proteins, protein interactions and protein complexes in different tissues. Our comparison shows that the detection of tissue-speci  ...[more]

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