Search for proteins with similarity to the CFTR R domain using an optimized RDBMS solution, mBioSQL

Tamás Hegedűs, John R. Riordan

Research output: Contribution to journalArticle

1 Citation (Scopus)

Abstract

The cystic fibrosis transmembrane conductance regulator (CFTR) comprises ATP binding and transmembrane domains, and a unique regulatory (R) domain not found in other ATP binding cassette proteins. Phosphorylation of the R domain at different sites by PKA and PKC is obligatory for the chloride channel function of CFTR. Sequence similarity searches on the R domain were uninformative. Furthermore, R domains from different species show low sequence similarity. Since these R domains resemble each other only in the location of the phosphorylation sites, we generated different R domain patterns masking amino acids between these sites. Because of the high number of the generated patterns we expected a large number of matches from the UniProt database. Therefore, a relational database management system (RDBMS) was set up to handle the results. During the software development our system grew into a general package which we term Modular BioSQL (mBioSQL). It has higher performance than other solutions and presents a generalized method for the storage of biological result-sets in RDBMS allowing convenient further analysis. Application of this approach revealed that the R domain phosphorylation pattern is most similar to those in nuclear proteins, including transcription and splicing factors.

Original languageEnglish
Pages (from-to)29-42
Number of pages14
JournalCentral European Journal of Biology
Volume1
Issue number1
DOIs
Publication statusPublished - Mar 2006

Keywords

  • CFTR
  • Cystic fibrosis
  • Phosphorylation
  • Regulatory domain
  • Relational database management system

ASJC Scopus subject areas

  • Neuroscience(all)
  • Biochemistry, Genetics and Molecular Biology(all)
  • Immunology and Microbiology(all)
  • Agricultural and Biological Sciences(all)

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