@article {300,
	title = {Solid-state NMR structural studies of the fibril form of a mutant mouse prion peptide PrP89-143(P101L)},
	journal = {Solid State Nuclear Magnetic Resonance},
	volume = {29},
	year = {2006},
	note = {Solid State Nucl Mag999VATimes Cited:22Cited References Count:34},
	month = {Feb},
	pages = {183-190},
	abstract = {<p>The peptide fragment 89-143 of the prion protein (carrying a P101L mutation) is biologically active in transgenic mice when in a fibrillar form. Injection of these fibrils into transgenic mice (expressing full length PrP with the P101L mutation) induces a neurodegenerative prion disease (Kaneko et al., J. Mol. Biol. 295 (2000) 997). Here we present solid-state NMR studies of PrP89-143(P101L) fibrils, probing the conformation of residues in the hydrophobic segment 112-124 with chemical shifts. The conformations of glycine residues were analyzed using doubly C-13 = 0 labeled peptides by two-dimensional (2D) double-quantum correlation, and double-quantum filtered dephasing distance measurements. MQ-NMR experiments were carried out to probe the relative alignment of the individual peptides fibrils. These NMR studies indicate that the 112-124 segment adopts an extended beta-sheet conformation, though not in a parallel, in register alignment. There is evidence for conformational variability at Gly 113. DQ correlation experiments provide useful information in regions with conformational heterogeneity. (c) 2005 Elsevier Inc. All rights reserved.</p>
},
	keywords = {identification},
	isbn = {0926-2040},
	doi = {Doi 10.1016/J.Ssnmr.2005.09.017},
	url = {<Go to ISI>://WOS:000234417500020},
	author = {Lim, K. H. and Nguyen, T. N. and Damo, S. M. and Mazur, T. and Ball, H. L. and Prusiner, S. B. and Pines, A. and Wemmer, D. E.}
}
@article {360,
	title = {Sensitivity enhancement in multiple-quantum NMR experiments with CPMG detection},
	journal = {Journal of Magnetic Resonance},
	volume = {157},
	year = {2002},
	note = {J Magn Reson589DHTimes Cited:12Cited References Count:12},
	month = {Jul},
	pages = {160-162},
	abstract = {<p>We present a modified multiple-quantum (MQ) experiment, which implements the Carr-Purcell-Meiboom-Gill (CPMG) detection scheme in the static MQ NMR experiment proposed by W. S. Warren et al. (1980, J. Chem. Phys. 73, 2084-2099) and exploited further by O. N. Antzutkin and R. Tycko (1999, J. Chem. Phys. 110, 2749-2752). It is demonstrated that a significant enhancement in the sensitivity can be achieved by acquiring echo trains in the MQ experiments for static powder samples. The modified scheme employing the CPMG detection was superior to the original MQ experiment, in particular for the carbonyl carbon with a very large chemical shift anisotropy. (C) 2002 Elsevier Science (USA).</p>
},
	keywords = {dynamics},
	isbn = {1090-7807},
	doi = {Doi 10.1006/Jmre.2002.2578},
	url = {<Go to ISI>://WOS:000177742400019},
	author = {Lim, K. H. and Nguyen, T. and Mazur, T. and Wemmer, D. E. and Pines, A.}
}
