The following sequences are listed under the tmRDB ID UNCU.RCA4., and are identical 
to each other.

Organism Name      GenBank AC#	
Uncultured RCA 4    AF389978	
Uncultured RCA 5    AF389979
Uncultured RCA 6    AF389980

References for sequences:
Kelley, S.T., Harris, J.K., Pace, N.R. (2001) Evaluation and refinement of tmRNA 
structure using gene sequences from natural microbial communities. RNA. Sep;7(9):1310-6.