References:

• Genome sequence of Symbiobacterium thermophilum, an uncultivable bacterium that depends on microbial commensalism.

  Ueda K, Yamashita A, Ishikawa J, Shimada M, Watsuji TO, Morimura K, Ikeda H, Hattori M, Beppu T.
  Nucleic Acids Res. 2004 Sep 21;32(16):4937-44. doi: 10.1093/nar/gkh830.

• Symbiobacterium thermophilum gen. nov., sp. nov., a symbiotic thermophile that depends on co-culture with a Bacillus strain for growth.

  Ohno M, Shiratori H, Park MJ, Saitoh Y, Kumon Y, Yamashita N, Hirata A, Nishida H, Ueda K, Beppu T.
  Int J Syst Evol Microbiol. 2000 Sep; 50 Pt 5:1829-32.

• Identification of indole derivatives as self-growth inhibitors of Symbiobacterium thermophilum, a unique bacterium whose growth depends on coculture with a Bacillus sp.

  Watsuji TO, Yamada S, Yamabe T, Watanabe Y, Kato T, Saito T, Ueda K, Beppu T.
  Appl Environ Microbiol. 2007 Oct;73(19):6159-65. doi: 10.1128/AEM.02835-06. Epub 2007 Aug 10.

• Emerging knowledge of regulatory roles of D-amino acids in bacteria.

  Cava F, Lam H, de Pedro MA, Waldor MK.
  Cell Mol Life Sci. 2011 Mar;68(5):817-31. doi: 10.1007/s00018-010-0571-8. Epub 2010 Dec 14.