"\u03B1r45 is a family of bacterial small non-coding RNAs with representatives in a broad group of \u03B1-proteobacteria from the order Hyphomicrobiales. The first member of this family (Smr45C) was found in a Sinorhizobium meliloti 1021 locus located in the chromosome (C). Further homology and structure conservation analysis identified homologs in several nitrogen-fixing symbiotic rhizobia (i.e. S. medicae, S. fredii, Rhizobium leguminosarum bv.viciae, R. leguminosarum bv. trifolii, R. etli, and several Mesorhizobium species), in the plant pathogens belonging to Agrobacterium species (i.e. A. tumefaciens, A. vitis, A. radiobacter, and Agrobacterium H13) as well as in a broad spectrum of Brucella species (B. ovis, B. canis, B. abortus and B. microtis, and several biovars of B. melitensis), in Bartone"@en . . . . . . . . . . . "1122882678"^^ . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . "\u03B1r45 is a family of bacterial small non-coding RNAs with representatives in a broad group of \u03B1-proteobacteria from the order Hyphomicrobiales. The first member of this family (Smr45C) was found in a Sinorhizobium meliloti 1021 locus located in the chromosome (C). Further homology and structure conservation analysis identified homologs in several nitrogen-fixing symbiotic rhizobia (i.e. S. medicae, S. fredii, Rhizobium leguminosarum bv.viciae, R. leguminosarum bv. trifolii, R. etli, and several Mesorhizobium species), in the plant pathogens belonging to Agrobacterium species (i.e. A. tumefaciens, A. vitis, A. radiobacter, and Agrobacterium H13) as well as in a broad spectrum of Brucella species (B. ovis, B. canis, B. abortus and B. microtis, and several biovars of B. melitensis), in Bartonella species (i.e. B. henselae, B. clarridgeiae, B. tribocorum, B. quintana, B. bacilliformis, B. grahamii), in several members of the Xanthobactereacea family (i.e. Azorhizobium caulinodans, Starkey novella, Xhantobacter autotrophicus), and in some representatives of the Beijerinckiaceae family (i.e. Methylocella silvestris, Beijerinckia indica subsp. indica). \u03B1r45C RNA species are 147-153 nt long (Table 1) and share a well defined common secondary structure (Figure 1). All of the \u03B1r45 transcripts can be catalogued as trans-acting sRNAs expressed from well-defined promoter regions of independent transcription units within intergenic regions (IGRs) of the \u03B1-proteobacterial genomes (Figure 5)."@en . . . . . . . . . . . . . . "34678964"^^ . . . . . "70753"^^ . . . . . . "\u0391r45 RNA"@en . . . . . . . .