2tob | pdb_00002tob

SOLUTION STRUCTURE OF THE TOBRAMYCIN-RNA APTAMER COMPLEX, NMR, 13 STRUCTURES

spinqualitylabelsall models 2tob, 13 NMR models Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2tob is a 1 chain structure. Full experimental information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: 2TB, TOA, TOC Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed We have solved the solution structure of the aminoglycoside antibiotic tobramycin complexed with a stem-loop RNA aptamer. The 14 base loop of the RNA aptamer 'zippers up' alongside the attached stem through alignment of four mismatches and one Watson-Crick pair on complex formation. The tobramycin inserts into the deep groove centered about the mismatch pairs and is partially encapsulated between its floor and a looped out guanine base that flaps over the bound antibiotic. Several potential intermolecular hydrogen bonds between the charged NH3 groups of tobramycin and acceptor atoms on base pair edges and backbone phosphates anchor the aminoglycoside antibiotic within its sequence/structure specific RNA binding pocket. Solution structure of the tobramycin-RNA aptamer complex.,Jiang L, Patel DJ Nat Struct Biol. 1998 Sep;5(9):769-74. PMID:9731769 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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