High-throughput protein expression of cDNA products as a tool in functional genomics
2000 (English)In: Journal of Biotechnology, ISSN 0168-1656, E-ISSN 1873-4863, Vol. 80, no 2, 143-157 p.Article in journal (Refereed) Published
A proteomics approach has been developed aimed to allow high throughput analysis of protein products expressed from cDNA fragments (expressed sequence tags, ESTs). The concept relies on expression of gene products to generate specific antibodies for protein analysis, such as immunolocalization of the proteins on cellular and subcellular level. To evaluate the system, 55 cDNA clones with predominantly unknown function were selected from a mouse testis cDNA-library. A bacterial expression system was designed that allowed robust expression and easy purification. Protein levels between 15 and 80 mg l(-1) were obtained for 49 of the clones. Five clones were selected for immunization and all yielded functional antibodies that gave specific staining in Western blot screening of samples from various cell types. Furthermore, extensive immunolocalization information on subcellular level was obtained for three of the five clones. All generated data were stored in a relational database, and are made available through a web-interface (http://www.biochem.kth.se/multiscale/), which also provides relevant links and allows homology searches from the original sequences. The possibility to allow analysis of gene products from whole genomes using this 'localization proteomics' approach is discussed.
Place, publisher, year, edition, pages
2000. Vol. 80, no 2, 143-157 p.
affinity-enriched antisera, bacterial expression, fusion protein, functional genomics, immunolocalization, localization proteomics, albumin-binding region, large number, recombinant proteins, mass-spectrometry, gene, identification, microarray, strategy, sequence, microscopy
IdentifiersURN: urn:nbn:se:kth:diva-19868ISI: 000087955500007OAI: oai:DiVA.org:kth-19868DiVA: diva2:338560
QC 201005252010-08-102010-08-10Bibliographically approved