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Spectrin, a major component of the membrane skeleton, is mainly composed of tandemly repeated segments of approx. 106 amino acids. We have undertaken the determination of the three-dimensional structure of a chicken brain α-spectrin repeat by heteronuclear multidimensional NMR. Sedimentation equilibrium demonstrates that this repeat is monomeric at the concentration used for NMR (1 mM). Its secondary...
The LH module has recently been identified in a number of RNA associated proteins including vigilin and FMR1, a protein implicated in the fragile X syndrome. In this work, NMR spectroscopy was used to determine the secondary structure in solution of a KH domain (repeat 5 from vigilin). Almost complete assignments were obtained for the 1 H and 15 N resonances using uniform ...
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