References:

• Transcript profiles of Nitrosomonas europaea during growth and upon deprivation of ammonia and carbonate.

  Wei X, Yan T, Hommes NG, Liu X, Wu L, McAlvin C, Klotz MG, Sayavedra-Soto LA, Zhou J, Arp DJ.
  FEMS Microbiol Lett. 2006 Apr;257(1):76-83.

• Structure and sequence conservation of hao cluster genes of autotrophic ammonia-oxidizing bacteria: evidence for their evolutionary history.

  Bergmann DJ, Hooper AB, Klotz MG.
  Appl Environ Microbiol. 2005 Sep;71(9):5371-82.

• The C-terminal domain of dimeric serine hydroxymethyltransferase plays a key role in stabilization of the quaternary structure and cooperative unfolding of protein: domain swapping studies with enzymes having high sequence identity.

  Bhatt AN, Khan MY, Bhakuni V.
  Protein Sci. 2004 Aug;13(8):2184-95.

• Characterization of a small metal binding protein from Nitrosomonas europaea.

  Barney BM, LoBrutto R, Francisco WA.
  Biochemistry. 2004 Sep 7;43(35):11206-13.