4kl6

Crystal structure of dimeric form of NpuDnaE intein

spinqualitylabelsall models 4kl6, resolution 2.20Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 4kl6 is a 4 chain structure with sequence from Nostoc punctiforme PCC 73102. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Function B2J821_NOSP7 Publication Abstract from PubMed Protein sequences are diversified on the DNA level by recombination and mutation and can be further increased on the RNA level by alternative RNA splicing, involving introns that have important roles in many biological processes. The protein version of introns (inteins), which catalyze protein splicing, were first reported in the 1990s. The biological roles of protein splicing still remain elusive because inteins neither provide any clear benefits nor have an essential role in their host organisms. We now report protein alternative splicing, in which new protein sequences can be produced by protein recombination by intermolecular domain swapping of inteins, as elucidated by NMR spectroscopy and crystal structures. We demonstrate that intein-mediated protein alternative splicing could be a new strategy to increase protein diversity (that is, functions) without any modification in genetic backgrounds. We also exploited it as a post-translational protein conformation-driven switch of protein functions (for example, as highly specific protein interference). Intermolecular domain swapping induces intein-mediated protein alternative splicing.,Aranko AS, Oeemig JS, Kajander T, Iwai H Nat Chem Biol. 2013 Aug 25. doi: 10.1038/nchembio.1320. PMID:23974115 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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