Alcaligenes eutrophus (tmRDB ID=ALCA.EUTR.),Ralstonia eutropha (tmRDB ID=RALS.EUTR.), 
and Ralstonia metallidurans CH34 (tmRDB ID=RALS.META.) are all synonyms for the same organism.

The 3 tmRNA sequences in the tmRDB from this organism are not identical, but highly similar.

The tmRDB records are named according to the name that the organism was sequenced under. 

The reference for the sequencing/identification of ALCA.EUTR. is as follows:
	Brown,J.W., Hunt,D.A. and Pace,N.R. (1990) Nucleotide sequence of the 
	10Sa RNA gene of the beta-purple eubacterium Alcaligenes eutrophus.  
	Nucleic Acids Res. 18 (9), 2820.

The reference for the sequencing/identification of RALS.EUTR. is as follows: 
	Felden B, Massire C, Westhof E, Atkins JF, Gesteland RF. (2001) 
	Phylogenetic analysis of tmRNA genes within a bacterial subgroup reveals 
	a specific structural signature. Nucleic. Acids. Res. 29 (7), 1602-1607.
	(According to the paper, this is a corrected version of ALCA.EUTR.)

The sequencing and identification of RALS.META. was done by the following:
Sequencing:  Department of Energy Joint Genome Institute. 
	http://www.jgi.doe.gov/JGI_microbial/html/ralstonia/ralston_homepage.html
Identification: K Williams, the tmRNA Website.
	http://www.indiana.edu/~tmrna/seqs/Ralst.metal.html