rhizobiales-2 rna motif rhizobiales-2 rna motif the rhizobiales-2 rna motif is a set of rnas found in certain bacteria that are presumed to be homologous because they conserve a common primary and secondary structure (see diagram). the motif was discovered using bioinformatics, and is found only within bacteria that belong to the order hyphomicrobiales (formerly rhizobiales), in turn a kind of alphaproteobacteria. because rhizobiales-2 rnas are not consistently located in proximity to genes of a consistent class or function, these rnas are presumed to function as non-coding rnas. rhizobiales-2 rnaconsensus secondary structure of rhizobiales-2 rnasidentifierssymbolrhizobiales-2rfamrf01723other datarna typesrnadomain(s)hyphomicrobialespdb structurespdbe