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The Nussinov algorithm is a nucleic acid structure prediction algorithm used in computational biology to predict the folding of an RNA molecule that makes use of dynamic programming principles. [1] The algorithm was developed by Ruth Nussinov in the late 1970s.
Double-stranded RNA forms an A-type helical structure, unlike the common B-type conformation taken by double-stranded DNA molecules. The secondary structure of RNA consists of a single polynucleotide. Base pairing in RNA occurs when RNA folds between complementarity regions. Both single- and double-stranded regions are often found in RNA molecules.
In 1956 Alex Rich and David Davies hybridized two separate strands of RNA to form the first crystal of RNA whose structure could be determined by X-ray crystallography. [ 77 ] The sequence of the 77 nucleotides of a yeast tRNA was found by Robert W. Holley in 1965, [ 78 ] winning Holley the 1968 Nobel Prize in Medicine (shared with Har Gobind ...
5' cap structure. A 5' cap (also termed an RNA cap, an RNA 7-methylguanosine cap, or an RNA m 7 G cap) is a modified guanine nucleotide that has been added to the "front" or 5' end of a eukaryotic messenger RNA shortly after the start of transcription. The 5' cap consists of a terminal 7-methylguanosine residue that is linked through a 5'-5 ...
CryoEM of nucleic acid has been done on ribosomes, [7] viral RNA, [8] and single-stranded RNA structures within viruses. [ 9 ] [ 10 ] These studies have resolved structural features at different resolutions from the nucleobase level (2-3 angstroms) up to tertiary structure motifs (greater than a nanometer).
The ViennaRNA Package is software, a set of standalone programs and libraries used for predicting and analysing RNA nucleic acid secondary structures. [1] The source code for the package is released as free and open-source software and compiled binaries are available for the operating systems Linux, macOS, and Windows.
In 1951, Pauling published the structure of the alpha helix, a fundamentally important structural component of proteins. In early 1953, Pauling published a triple helix model of DNA, which subsequently turned out to be incorrect. [3] Both Crick, and particularly Watson, thought that they were racing against Pauling to discover the structure of DNA.
Structure of a GNRA tetraloop from a group I self-splicing intron. [1] Tetraloops are a type of four-base hairpin loop motifs in RNA secondary structure that cap many double helices. [2] There are many variants of the tetraloop. The published ones include ANYA, [3] [4] CUYG, [5] GNRA, [6] UNAC [7] and UNCG. [8]