Deuteron Field-cycling Relaxation Spectroscopy and Translational Water Diffusion in Protein Hydration Shells
Overview
Affiliations
The deuterated hydration shells of bovine serum (BSA) albumin, and purple membrane sheets have been studied by the aid of deuteron field-cycling relaxation spectroscopy. The deuteron Larmor frequency range was 10(3) to 10(8) Hz. The temperature and the water content has been varied. The data distinguish translational diffusion on the protein surface from macromolecular tumbling or exchange with free water. A theory well describing all dependences has been developed on this basis. All parameters have successfully been tested concerning consistency with other sources of information. The concept is considered as a major relaxation scheme determining, apart from cross-relaxation effects, the water proton relaxation in tissue.
Cretu A, Mattea C, Stapf S PLoS One. 2021; 16(8):e0256177.
PMID: 34432832 PMC: 8386884. DOI: 10.1371/journal.pone.0256177.
Kimmich R, Gneiting T, Kotitschke K, Schnur G Biophys J. 2009; 58(5):1183-97.
PMID: 19431772 PMC: 1281063. DOI: 10.1016/S0006-3495(90)82459-0.
Kasturi S, Seitz P, Chang D, Hazlewood C Biophys J. 2009; 58(2):483-91.
PMID: 19431762 PMC: 1280988. DOI: 10.1016/S0006-3495(90)82393-6.
Berti F, Costantino P, Fragai M, Luchinat C Biophys J. 2003; 86(1 Pt 1):3-9.
PMID: 14695244 PMC: 1303793. DOI: 10.1016/S0006-3495(04)74078-3.
Water molecule binding and lifetimes on the DNA duplex d(CGCGAATTCGCG)2.
Zhou D, Bryant R J Biomol NMR. 1996; 8(1):77-86.
PMID: 8810525 DOI: 10.1007/BF00198141.