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Mol Microbiol. 1990 Apr;4(4):633-44.

The ami locus of the gram-positive bacterium Streptococcus pneumoniae is similar to binding protein-dependent transport operons of gram-negative bacteria.

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1
Centre de Recherche de Biochimie et de Génétique, Cellulaires du CNRS, Université Paul Sabatier, Toulouse, France.

Abstract

The complete nucleotide sequence of the ami locus of Streptococcus pneumoniae revealed the presence of six open reading frames, amiABCDEF. The predicted Ami proteins are probably involved in a transport system. The AmiA, C, D, E, and F proteins exhibit homology with components of the oligopeptide permeases (opp) of Salmonella typhimurium and Escherichia coli. Intriguingly, the AmiB protein is homologous to ArsC, a cytosolic modifier subunit of the anion pump encoded by the arsenical resistance operon of the R-factor R773 from E. coli. Data are presented which indicate that Ami is indeed a transport system.

[Indexed for MEDLINE]

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