Site-specific protein methyl deuterium quadrupolar patterns by proton-detected 3D 2H-13C-1H MAS NMR spectroscopy.
J Biomol NMR
; 76(1-2): 23-28, 2022 Apr.
Article
en En
| MEDLINE
| ID: mdl-34997409
ABSTRACT
Determination of protein structure and dynamics is key to understand the mechanism of protein action. Perdeuterated proteins have been used to obtain high resolution/sensitivty NMR experiments via proton-detection. These methods utilizes 1H, 13C and 15N nuclei for chemical shift dispersion or relaxation probes, despite the existing abundant deuterons. However, a high-sensitivity NMR method to utilize deuterons and e.g. determine site-specific deuterium quadrupolar pattern information has been lacking due to technical difficulties associated with deuterium's large quadrupolar couplings. Here, we present a novel deuterium-excited and proton-detected three-dimensional 2H-13C-1H MAS NMR experiment to utilize deuterons and to obtain site-specific methyl 2H quadrupolar patterns on detuterated proteins for the first time. A high-resolution fingerprint 1H-15N HSQC-spectrum is correlated with the anisotropic deuterium quadrupolar tensor in the third dimension. Results from a model perdeuterated protein has been shown.
Palabras clave
Texto completo:
1
Colección:
01-internacional
Banco de datos:
MEDLINE
Asunto principal:
Protones
/
Proteínas
Idioma:
En
Revista:
J Biomol NMR
Asunto de la revista:
BIOLOGIA MOLECULAR
/
DIAGNOSTICO POR IMAGEM
/
MEDICINA NUCLEAR
Año:
2022
Tipo del documento:
Article
País de afiliación:
Países Bajos