Three highly homologous membrane-bound lipoproteins participate in oligopeptide transport by the Ami system of the gram-positive Streptococcus pneumoniae.

Abstract excerpt

Oligopeptides are an important source of nutrients, but can serve also as signals for intercellular communication. Oligopeptide-binding proteins seem likely to play a role both in oligopeptide transport and in communication processes. One such protein, AmiA, has been identified in Streptococcus pneumoniae. amiA is the first gene of an operon, ami, which encodes a multicomponent oligopeptide transporter belonging...

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