Paralogous genes encoding transport proteins in microbial genomes

Milton H. Saier, Ian T. Paulsen

Research output: Contribution to journalReview articlepeer-review

11 Citations (Scopus)


The largest superfamilies of prokaryotic genes encode transport proteins, but many transporters are encoded by orphan genes or those that comprise very small families. We have analyzed eighteen completely sequenced prokaryotic genomes for paralogous transport systems and have thereby identified 76 permease families. In this short review, we present and discuss the paralogues in some of these families and interpret the most prominent results, particularly those relevant to the largest permease superfamilies.

Original languageEnglish
Pages (from-to)689-699
Number of pages11
JournalResearch in Microbiology
Issue number9-10
Publication statusPublished - Nov 1999
Externally publishedYes


  • Evolution
  • Paralogue
  • Permease family
  • Superfamily
  • Transport protein


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