Catalogo Articoli (Spogli Riviste)

OPAC HELP

Titolo:
Photo-CIDNP C-13 magic angle spinning NMR on bacterial reaction centres: Exploring the electronic structure of the special pair and its surroundings
Autore:
Matysik, J; Schulten, E; Alia; Gast, P; Raap, J; Lugtenburg, J; Hoff, AJ; de Groot, HJM;
Indirizzi:
Leiden Univ, Leiden Inst Chem, Gorlaeus Labs, NL-2300 RA Leiden, Netherlands Leiden Univ Leiden Netherlands NL-2300 RA NL-2300 RA Leiden, Netherlands Huygens Lab, Dept Biophys, NL-2300 RA Leiden, Netherlands Huygens Lab Leiden Netherlands NL-2300 RA NL-2300 RA Leiden, Netherlands
Titolo Testata:
BIOLOGICAL CHEMISTRY
fascicolo: 8, volume: 382, anno: 2001,
pagine: 1271 - 1276
SICI:
1431-6730(200108)382:8<1271:PCMASN>2.0.ZU;2-S
Fonte:
ISI
Lingua:
ENG
Soggetto:
PHOTOSYNTHETIC REACTION CENTERS; SOLID-STATE; PHOTOINDUCED POLARIZATION; NUCLEAR-POLARIZATION; TRIPLET-STATE; RADICAL PAIR; MECHANISM; TEMPERATURE; COHERENCES;
Keywords:
chlorophyll; histidine; photo-CIDNP; photosynthesis; solid-state NMR;
Tipo documento:
Article
Natura:
Periodico
Settore Disciplinare:
Life Sciences
Citazioni:
33
Recensione:
Indirizzi per estratti:
Indirizzo: de Groot, HJM Leiden Univ, Leiden Inst Chem, Gorlaeus Labs, POB 9502, NL-2300 RA Leiden,Netherlands Leiden Univ POB 9502 Leiden Netherlands NL-2300 RA herlands
Citazione:
J. Matysik et al., "Photo-CIDNP C-13 magic angle spinning NMR on bacterial reaction centres: Exploring the electronic structure of the special pair and its surroundings", BIOL CHEM, 382(8), 2001, pp. 1271-1276

Abstract

Photochemically induced dynamic nuclear polarisation (photo-CIDNP) in intact bacterial reaction centres has been observed by C-13-solid state NMR under continuous illumination with white light. Strong intensity enhancement of C-13 NMR signals of the aromatic rings allows probing the electronic ground state of the two BChl cofactors of the special pair at the molecular scale with atomic selectivity, Differences between the two BChl cofactors are discussed. Several aliphatic C-13 atoms of cofactors, as well as C-13 atomsof the imidazole ring of histidine residue(s), show nuclear-spin polarisation to the same extent as the aromatic nuclei of the cofactors. Mechanisms and applications of polarisation transfer are discussed.

ASDD Area Sistemi Dipartimentali e Documentali, Università di Bologna, Catalogo delle riviste ed altri periodici
Documento generato il 03/04/20 alle ore 13:50:19