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- W2059423488 abstract "Calcium-containing calmodulin (CaM) and its complex with a peptide corresponding to the calmodulin-binding domain of skeletal muscle myosin light chain kinase [skMLCK(576-594)G] have been studied by one- and two-dimensional 1H NMR techniques. Resonances arising from the antiparallel beta-sheet structures associated with the calcium-binding domains of CaM and their counterparts in the CaM-skMLCK(576-594)G complex have been assigned. The assignments were initiated by application of the main chain directed assignment strategy. It is found that, despite significant changes in chemical shifts of resonances arising from amino acid residues in this region upon binding of the peptide, the beta-sheets have virtually the same structure in the complex as in CaM. Hydrogen exchange rates of amide NH within the beta-sheet structures are significantly slowed upon binding of peptide. These data, in conjunction with the observed nuclear Overhauser effect (NOE) patterns and relative intensities and the downfield shifts of associated amide and alpha resonances upon binding of peptide, show that the peptide stabilizes the Ca2+-bound state of calmodulin. The observed pattern of NOEs within the beta-sheets and their structural similarity correspond closely to those predicted by the crystal structure. These findings imply that the apparent inconsistency of the crystal structure with recently reported low-angle X-ray scattering profiles of CaM may lie within the putative central helix bridging the globular domains." @default.
- W2059423488 created "2016-06-24" @default.
- W2059423488 creator A5062942186 @default.
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- W2059423488 date "1989-05-02" @default.
- W2059423488 modified "2023-10-17" @default.
- W2059423488 title "Structural characterization of the interactions between calmodulin and skeletal muscle myosin light chain kinase: effect of peptide (576-594)G binding on the calcium-binding domains" @default.
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- W2059423488 doi "https://doi.org/10.1021/bi00435a057" @default.
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