Matches in SemOpenAlex for { <https://semopenalex.org/work/W2417173594> ?p ?o ?g. }
Showing items 1 to 70 of
70
with 100 items per page.
- W2417173594 endingPage "46" @default.
- W2417173594 startingPage "439" @default.
- W2417173594 abstract "In experiments with reaction centers (RC) preparations of Rps. sphaeroides, strain 1760-1, pH of the suspension medium was found to change under continuous light excitation. The concentration of hydrogen ions starts to decrease fastly (t1/2 = 2--4 s) after the light is on, whereupon it increases slowly, to a steady-state level, within t1/2 = 5--7 min. During the fast phase 0.3 microM H+/1 microM of RC are absorbed and 7--8 microM H+/1 microM of RC are released under the slow phase. The fast phase is suppressed by ortho-phenantroline (10 mM)--an inhibitor of electron transfer from the primary (Fe-quinone complex) to the secondary (quinone) electron acceptors. Glutaraldehyde which is known to modify a protein structure of the RC inhibits the slow phase. The obtained data suggest that fast light-induced pH changes are due to a H+ uptake by the secondary quinoid anion-radical products; slow pH changes are ascribed to structural changes within the RC complex, which lead to a pK shift and/or changes in the amount of dissociating groups on the protein interfacial surface. The conclusion was supported by an observation of light-induced changes in buffer capacity of an RC suspension and by a light-induced increase in the amount of SH-groups titrated by 5.5-dithio-bis(2 nitro)-benzoic acid. The role of conformational dynamics of photoactive pigment--protein complexes in the functions of the RC is discussed." @default.
- W2417173594 created "2016-06-24" @default.
- W2417173594 creator A5017360322 @default.
- W2417173594 creator A5029069943 @default.
- W2417173594 creator A5029101321 @default.
- W2417173594 creator A5051222931 @default.
- W2417173594 creator A5064475143 @default.
- W2417173594 date "1981-03-01" @default.
- W2417173594 modified "2023-09-25" @default.
- W2417173594 title "[Light-induced changes in pH and buffer capacity in reaction center preparations of Rhodopseudomonas spheroides]." @default.
- W2417173594 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/7017384" @default.
- W2417173594 hasPublicationYear "1981" @default.
- W2417173594 type Work @default.
- W2417173594 sameAs 2417173594 @default.
- W2417173594 citedByCount "0" @default.
- W2417173594 crossrefType "journal-article" @default.
- W2417173594 hasAuthorship W2417173594A5017360322 @default.
- W2417173594 hasAuthorship W2417173594A5029069943 @default.
- W2417173594 hasAuthorship W2417173594A5029101321 @default.
- W2417173594 hasAuthorship W2417173594A5051222931 @default.
- W2417173594 hasAuthorship W2417173594A5064475143 @default.
- W2417173594 hasConcept C123669783 @default.
- W2417173594 hasConcept C13965031 @default.
- W2417173594 hasConcept C145148216 @default.
- W2417173594 hasConcept C155647269 @default.
- W2417173594 hasConcept C178790620 @default.
- W2417173594 hasConcept C185592680 @default.
- W2417173594 hasConcept C188231169 @default.
- W2417173594 hasConcept C24840226 @default.
- W2417173594 hasConcept C2777339483 @default.
- W2417173594 hasConcept C2780643102 @default.
- W2417173594 hasConcept C55493867 @default.
- W2417173594 hasConcept C71240020 @default.
- W2417173594 hasConcept C75473681 @default.
- W2417173594 hasConcept C8010536 @default.
- W2417173594 hasConceptScore W2417173594C123669783 @default.
- W2417173594 hasConceptScore W2417173594C13965031 @default.
- W2417173594 hasConceptScore W2417173594C145148216 @default.
- W2417173594 hasConceptScore W2417173594C155647269 @default.
- W2417173594 hasConceptScore W2417173594C178790620 @default.
- W2417173594 hasConceptScore W2417173594C185592680 @default.
- W2417173594 hasConceptScore W2417173594C188231169 @default.
- W2417173594 hasConceptScore W2417173594C24840226 @default.
- W2417173594 hasConceptScore W2417173594C2777339483 @default.
- W2417173594 hasConceptScore W2417173594C2780643102 @default.
- W2417173594 hasConceptScore W2417173594C55493867 @default.
- W2417173594 hasConceptScore W2417173594C71240020 @default.
- W2417173594 hasConceptScore W2417173594C75473681 @default.
- W2417173594 hasConceptScore W2417173594C8010536 @default.
- W2417173594 hasIssue "2" @default.
- W2417173594 hasLocation W24171735941 @default.
- W2417173594 hasOpenAccess W2417173594 @default.
- W2417173594 hasPrimaryLocation W24171735941 @default.
- W2417173594 hasRelatedWork W1481717016 @default.
- W2417173594 hasRelatedWork W164026663 @default.
- W2417173594 hasRelatedWork W1997279160 @default.
- W2417173594 hasRelatedWork W2055057844 @default.
- W2417173594 hasRelatedWork W2062728408 @default.
- W2417173594 hasRelatedWork W2062821539 @default.
- W2417173594 hasRelatedWork W2095532392 @default.
- W2417173594 hasRelatedWork W2527718693 @default.
- W2417173594 hasRelatedWork W2550763701 @default.
- W2417173594 hasRelatedWork W4236162810 @default.
- W2417173594 hasVolume "15" @default.
- W2417173594 isParatext "false" @default.
- W2417173594 isRetracted "false" @default.
- W2417173594 magId "2417173594" @default.
- W2417173594 workType "article" @default.