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. 2005 Jun;1(1):23-4.
doi: 10.1038/nchembio709. Epub 2005 May 24.

Structure of the Bacillus subtilis quorum-sensing peptide pheromone ComX

Masahiro Okada  1 , Isao Sato, Soo Jeong Cho, Hidehisa Iwata, Toshihiko Nishio, David Dubnau, Youji Sakagami
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Structure of the Bacillus subtilis quorum-sensing peptide pheromone ComX

Masahiro Okada et al. Nat Chem Biol. 2005 Jun.

Abstract

The ComX pheromone is an extracellular signaling molecule that stimulates natural competence in response to crowding in the gram-positive bacterium Bacillus subtilis. The pheromone is formed by isoprenylation of an inactive precursor peptide, but its precise structure is not known. Here we report the structure of the ComX pheromone, showing that addition of a geranyl group to a tryptophan residue results in the formation of an unusual ring structure.

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