1kdd

X-ray structure of the coiled coil GCN4 ACID BASE HETERODIMER ACID-d12La16I BASE-d12La16L

spinqualitylabelsall models 1kdd, resolution 2.14Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 1kdd is a 6 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. NonStd Res: ACE Related: 1kd8, 1kd9 Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Publication Abstract from PubMed An important goal in biology is to predict from sequence data the high-resolution structures of proteins and the interactions that occur between them. In this paper, we describe a computational approach that can make these types of predictions for a series of coiled-coil dimers. Our method comprises a dual strategy that augments extensive conformational sampling with molecular mechanics minimization. To test the performance of the method, we designed six heterodimeric coiled coils with a range of stabilities and solved x-ray crystal structures for three of them. The stabilities and structures predicted by the calculations agree very well with experimental data: the average error in unfolding free energies is <1 kcal/mol, and nonhydrogen atoms in the predicted structures superimpose onto the experimental structures with rms deviations <0.7 A. We have also tested the method on a series of homodimers derived from vitellogenin-binding protein. The predicted relative stabilities of the homodimers show excellent agreement with previously published experimental measurements. A critical step in our procedure is to use energy minimization to relax side-chain geometries initially selected from a rotamer library. Our results show that computational methods can predict interaction specificities that are in good agreement with experimental data. Side-chain repacking calculations for predicting structures and stabilities of heterodimeric coiled coils.,Keating AE, Malashkevich VN, Tidor B, Kim PS Proc Natl Acad Sci U S A. 2001 Dec 18;98(26):14825-30. PMID:11752430 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine. See Also Gnc4 3D Structures

Proteopedia Page Contributors and Editors (what is this?)

OCA