1d6k

NMR SOLUTION STRUCTURE OF THE 5S RRNA E-LOOP/L25 COMPLEX

spinqualitylabelsall models 1d6k Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1d6k is a 2 chain structure with sequence from Escherichia coli. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Method: Solution NMR Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function RL25_ECOLI This is one of the proteins that binds to the 5S RNA in the ribosome where it forms part of the central protuberance. Binds to the 5S rRNA independently of L5 and L18. Not required for binding of the 5S rRNA/L5/L18 subcomplex to 23S rRNA.[HAMAP-Rule:MF_01336] Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed The structure of the complex between ribosomal protein L25 and a 37 nucleotide RNA molecule, which contains the E-loop and helix IV regions of the E-domain of Escherichia coli 5S rRNA, has been determined to an overall r.m.s. displacement of 1.08 A (backbone heavy atoms) by heteronuclear NMR spectroscopy (Protein Databank code 1d6k). The interacting molecular surfaces are bipartite for both the RNA and the protein. One side of the six-stranded beta-barrel of L25 recognizes the minor groove of the E-loop with very little change in the conformations of either the protein or the RNA and with the RNA-protein interactions occurring mainly along one strand of the E-loop duplex. This minor groove recognition module includes two parallel beta-strands of L25, a hitherto unknown RNA binding topology. Binding of the RNA also induces conversion of a flexible loop to an alpha-helix in L25, the N-terminal tip of which interacts with the widened major groove at the E-loop/helix IV junction of the RNA. The structure of the complex reveals that the E-domain RNA serves as a preformed docking partner, while the L25 protein has one preformed and one induced recognition module. The NMR structure of the 5S rRNA E-domain-protein L25 complex shows preformed and induced recognition.,Stoldt M, Wohnert J, Ohlenschlager O, Gorlach M, Brown LR EMBO J. 1999 Nov 15;18(22):6508-21. PMID:10562563 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Ribosomal protein L25

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