1m5v | pdb_00001m5v

Transition State Stabilization by a Catalytic RNA

spinqualitylabelsall models 1m5v, resolution 2.40Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1m5v is a 8 chain structure with sequence from Homo sapiens. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CA, MPD NonStd Res: A23 Related: 1m5k, 1m5o, 1m5p Gene: SNRPA (Homo sapiens) Resources: FirstGlance, OCA, RCSB, PDBsum 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 hairpin ribozyme catalyzes sequence-specific cleavage of RNA through transesterification of the scissile phosphate. Vanadate has previously been used as a transition state mimic of protein enzymes that catalyze the same reaction. Comparison of the 2.2 angstrom resolution structure of a vanadate-hairpin ribozyme complex with structures of precursor and product complexes reveals a rigid active site that makes more hydrogen bonds to the transition state than to the precursor or product. Because of the paucity of RNA functional groups capable of general acid-base or electrostatic catalysis, transition state stabilization is likely to be an important catalytic strategy for ribozymes. Transition state stabilization by a catalytic RNA.,Rupert PB, Massey AP, Sigurdsson ST, Ferre-D'Amare AR Science. 2002 Nov 15;298(5597):1421-4. Epub 2002 Oct 10. PMID:12376595 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Nucleoprotein Ribozyme

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