|
EcpR1 SRNA
EcpR1 (elongated cell phenotype RNA1) is a ''trans-''encoded small non-coding RNA in the plant-symbiotic '' Sinorhizobium meliloti'', previously named SmelC291, SmrC10, or Sra33. According to its overproduction phenotype it was renamed Elongated Cell Phenotype RNA1. Induced by stress, EcpR1 negatively regulates cell cycle master regulatory genes ''dnaA'' and ''gcrA'' at post-transcriptional level by base pairing between its strongly conserved GC-rich loop and the target mRNAs. It is suggested that EcpR1 connects stress adaptation and cell cycle progression. See also * SuhB ''suhB'', also known as ''mmgR'' (makes more granules regulator), is a non-coding RNA found multiple times in the ''Agrobacterium tumefaciens'' genome and related alpha-proteobacteria. Other non-coding RNAs uncovered in the same analysis include ... * RcsR1 small RNA Further reading {{Reflist Non-coding RNA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Small RNA
Small RNA (sRNA) are polymeric RNA molecules that are less than 200 nucleotides in length, and are usually non-coding Non-coding DNA (ncDNA) sequences are components of an organism's DNA that do not encode protein sequences. Some non-coding DNA is transcribed into functional non-coding RNA molecules (e.g. transfer RNA, microRNA, piRNA, ribosomal RNA, and regula .... RNA silencing is often a function of these molecules, with the most common and well-studied example being RNA interference (RNAi), in which endogenously expressed microRNA (miRNA) or exogenously derived small interfering RNA (siRNA) induces the degradation of complementarity (molecular biology), complementary messenger RNA. Other classes of small RNA have been identified, including piwi-interacting RNA (piRNA) and its subspecies rasiRNA, repeat associated small interfering RNA (rasiRNA). Small RNA "is unable to induce RNAi alone, and to accomplish the task it must form the core of the RNA–protein complex termed the ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
Sinorhizobium Meliloti
''Ensifer meliloti'' (formerly ''Rhizobium meliloti'' and ''Sinorhizobium meliloti'') are an aerobic, Gram-negative, and diazotrophic species of bacteria. ''S. meliloti'' are motile and possess a cluster of peritrichous flagella. ''S. meliloti'' fix atmospheric nitrogen into ammonia for their legume symbionts, such as alfalfa. ''S. meliloti'' forms a symbiotic relationship with legumes from the genera ''Medicago'', ''Melilotus'' and ''Trigonella'', including the model legume ''Medicago truncatula''. This symbiosis promotes the development of a plant organ, termed a root nodule. Because soil often contains a limited amount of nitrogen for plant use, the symbiotic relationship between ''S. meliloti'' and their legume hosts has agricultural applications. These techniques reduce the need for inorganic nitrogenous fertilizers. Symbiosis Symbiosis between ''S. meliloti'' and its legume hosts begins when the plant secretes an array of betaines and flavonoids into the rhizosphere: 4,4†... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
SuhB
''suhB'', also known as ''mmgR'' (makes more granules regulator), is a non-coding RNA found multiple times in the ''Agrobacterium tumefaciens'' genome and related alpha-proteobacteria. Other non-coding RNAs uncovered in the same analysis include '' speF'', '' ybhL'', ''metA'', and ''serC''. Several studies in '' Sinorhizobium meliloti'' showed that the ''suhB'' element is indeed a non-coding RNA. It was first detected by Northern blot and called ''Sm8RNA'', then in an RNAseq study and referred to as ''SmelC689''. The mutant (lacking the small RNA) phenotype's cytoplasm contains a higher content of polyhydroxybutyrate (PBH) storage granules than the wild type strain. The sRNA is required to limit the PBH intracellular accumulation when the nitrogen-fixing '' Sinorhizobium meliloti'' is converting surplus carbon to nitrogen his needs to be modified, carbon cannot be converted to nitrogen/sup>. Further study confirmed that ''suhB'' fine-tunes the regulation of PBH storage. North ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
RcsR1 Small RNA
RcsR1 (rhizobial cold and salinity stress riboregulator 1) trans-acting sRNA, formerly known as SmelC587, is a stress-related riboregulator, conserved in ''Sinorhizobium'', '' Rhizobium'' and ''Agrobacterium''. It contains highly conserved stem-loops involved in the interaction with several target mRNAs (PhoR, MotE, anti-σE1, GntR, FgA, TrpC). In '' Sinorhizobium meliloti'' RcsR1 less conserved central region is responsible for the species-specific interaction with the 5’UTR of autoinducer synthase encoding mRNA ''sinI''. The interaction negatively influences ''sinI'' translation. See also * SuhB * EcpR1 sRNA EcpR1 (elongated cell phenotype RNA1) is a ''trans-''encoded small non-coding RNA in the plant-symbiotic '' Sinorhizobium meliloti'', previously named SmelC291, SmrC10, or Sra33. According to its overproduction phenotype it was renamed Elongated Ce ... References {{reflist Non-coding RNA ... [...More Info...] [...Related Items...] OR: [Wikipedia] [Google] [Baidu] |
