2mf1

Structural basis of the non-coding RNA RsmZ acting as protein sponge: Conformer R of RsmZ(1-72)/RsmE(dimer) 1to3 complex

spinqualitylabelsall models 2mf1, 20 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2mf1 is a 7 chain structure with sequence from Psef5. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Related: 2mf0 Gene: rsmE, csrA, PFL_2095 (PSEF5) Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function [Q4KEY0_PSEF5] Could accelerate the degradation of some genes transcripts potentially through selective RNA binding (By similarity).[HAMAP-Rule:MF_00167][SAAS:SAAS003751_004_007709] Publication Abstract from PubMed MicroRNA and protein sequestration by non-coding RNAs (ncRNAs) has recently generated much interest. In the bacterial Csr/Rsm system, which is considered to be the most general global post-transcriptional regulatory system responsible for bacterial virulence, ncRNAs such as CsrB or RsmZ activate translation initiation by sequestering homodimeric CsrA-type proteins from the ribosome-binding site of a subset of messenger RNAs. However, the mechanism of ncRNA-mediated protein sequestration is not understood at the molecular level. Here we show for Pseudomonas fluorescens that RsmE protein dimers assemble sequentially, specifically and cooperatively onto the ncRNA RsmZ within a narrow affinity range. This assembly yields two different native ribonucleoprotein structures. Using a powerful combination of nuclear magnetic resonance and electron paramagnetic resonance spectroscopy we elucidate these 70-kilodalton solution structures, thereby revealing the molecular mechanism of the sequestration process and how RsmE binding protects the ncRNA from RNase E degradation. Overall, our findings suggest that RsmZ is well-tuned to sequester, store and release RsmE and therefore can be viewed as an ideal protein 'sponge'. Structural basis of the non-coding RNA RsmZ acting as a protein sponge.,Duss O, Michel E, Yulikov M, Schubert M, Jeschke G, Allain FH Nature. 2014 May 29;509(7502):588-92. doi: 10.1038/nature13271. Epub 2014 May 14. PMID:24828038 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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