Correlated motion monitored by NMR relaxation in the rotating frame. A source of structural and dynamic information on macromolecules

Abstract

Supplementary Material Available: Full characterization of 1, 2, and 3 is provided along with general experimental and cyclization procedures (5 pages). Ordering information is given on any current masthead page.

Methods for the Determination of Torsion Angle Restraints in Biomacromolecules

“…The complementary experiment is the triple quantum filtered ROESY, reported by Brüschweiler et al (1989). The drawback of the two experiments is their inherently low sensitivity, which is related to the large distances of the spins involved.…”

NMR Relaxation in Multipolar AX Systems under Spin Locking Conditions

“…Also, these cross-correlation or interference phenomena are influenced by the presence of radiofrequency fields, which again introduce spectral densities (here, the cross-correlation spectral densities) at low frequencies (7, 16, 26 -30). Moreover, the presence of the radiofrequency fields blocks certain unwanted magnetization transfer pathways (26,27,30,31). All work on crosscorrelation effects in systems of coupled spins in the presence of RF fields has been concerned with systems of nuclei with spin quantum number of 1 2 , where the relevant relaxation mechanisms are dipolar and chemical shielding anisotropy (CSA) interactions.…”

Direct Measurement of Dynamic Frequency Shift Induced by Cross‐Correlations in 15N‐Enriched Proteins

“…[24]. We find that starting from an in-phase coherence Z z , after a delay t 1 and assuming matched Hartmann±Hahn conditions, the coherence becomes Equation (10).…”