2bx9 | pdb_00002bx9

CRYSTAL STRUCTURE OF B.SUBTILIS ANTI-TRAP PROTEIN, AN ANTAGONIST OF TRAP-RNA INTERACTIONS

spinqualitylabelsall models 2bx9, resolution 2.80Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2bx9 is a 12 chain structure with sequence from Bacillus subtilis. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: ZN Resources: FirstGlance, OCA, RCSB, PDBsum Publication Abstract from PubMed In Bacillus subtilis the anti-TRAP protein (AT) is produced in response to the accumulation of uncharged tRNA(Trp). AT regulates expression of genes involved in tryptophan biosynthesis and transport by binding to the tryptophan-activated trp RNA-binding attenuation protein (TRAP) and preventing its interaction with several mRNAs. Here, we report the x-ray structure of AT at 2.8 angstroms resolution, showing that the protein subunits assemble into tight trimers. Four such trimers are further associated into a 12-subunit particle in which individual trimers are related by twofold and threefold symmetry axes. Twelve DnaJ-like, cysteine-rich zinc-binding domains form spikes on the surface of the dodecamer. Available data suggest several possible ways for AT to interact with the 11-subunit TRAP. Interaction between the two symmetry-mismatching molecules could be assisted by the flexible nature of AT zinc-binding domains. Crystal structure of Bacillus subtilis anti-TRAP protein, an antagonist of TRAP/RNA interaction.,Shevtsov MB, Chen Y, Gollnick P, Antson AA Proc Natl Acad Sci U S A. 2005 Dec 6;102(49):17600-5. Epub 2005 Nov 23. PMID:16306262 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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