FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2000888988> ?p ?o ?g. }

• W2000888988 endingPage "3348" @default.
• W2000888988 startingPage "3344" @default.
• W2000888988 abstract "We have made significant improvements in pump−probe time-resolved X-ray absorption spectroscopy that enable us to structurally describe chemical intermediates with short lifetimes. We demonstrate that X-ray preedge data for a 1 mM compound can be acquired with a high signal-to-noise ratio by time-resolved discrimination of fluorescent signals from a 13-element germanium detector. With the utilization of this novel time-multiplexed laser photolysis system coupled to a flow cell, we characterized the structure of the initial photoproduct of five-coordinate base-off Co(III) methylcobalamin. The structure of the primary photoproduct could have included five- or six-coordinate species with water ligation, or a four-coordinate square-planar species. A four-coordinate Co(II) species is expected to be unstable but its biological relevance is highlighted by our recent discovery of a four-coordinate Co(II) species, (existing as the inactive, as isolated, form) in the corrinoid protein of Clostridium thermoaceticum. The X-ray preedge spectra of five- and six-coordinate species have a strong 1s−3d transition at about 10 eV below the edge. In four-coordinate, square-planar species the 1s−3d intensity is significantly reduced, but they show a 1s−4pz peak at about 6 eV below the edge. We used this “fingerprint” to monitor the structural change upon photolysis. Since the quantum yield of the base-off species is 0.48, the observed spectrum upon photolysis is a mixture of photoproduct and initial states. The photoproduct of the base-off methylcobalamin shows a substantial decrease in the 1s−3d peak and significant increase in the 1s−4pz peak. This indicates the formation of a four-coordinate species. The four-coordinate species in the free cobalamin is very unstable and can only be detected by time-resolved methods. This indicates a special role for the protein in maintaining an unusual four-coordinate Co(II) corrinoid." @default.
• W2000888988 created "2016-06-24" @default.
• W2000888988 creator A5006195828 @default.
• W2000888988 creator A5013748007 @default.
• W2000888988 creator A5030602706 @default.
• W2000888988 creator A5044150509 @default.
• W2000888988 creator A5054360380 @default.
• W2000888988 creator A5071940002 @default.
• W2000888988 creator A5072716963 @default.
• W2000888988 creator A5074590540 @default.
• W2000888988 creator A5077779563 @default.
• W2000888988 creator A5085830642 @default.
• W2000888988 date "1996-01-01" @default.
• W2000888988 modified "2023-09-27" @default.
• W2000888988 title "Time-Resolved X-ray Absorption Spectroscopy of Photoreduced Base-off Cob(II)alamin Compared to the Co(II) Species in <i>Clostridium thermoaceticum</i>" @default.
• W2000888988 cites W1506309721 @default.
• W2000888988 cites W1579709565 @default.
• W2000888988 cites W1977231759 @default.
• W2000888988 cites W1978597242 @default.
• W2000888988 cites W1987279642 @default.
• W2000888988 cites W1988055043 @default.
• W2000888988 cites W1989282758 @default.
• W2000888988 cites W1991154311 @default.
• W2000888988 cites W2001933043 @default.
• W2000888988 cites W2004253252 @default.
• W2000888988 cites W2014966142 @default.
• W2000888988 cites W2022996442 @default.
• W2000888988 cites W2030273754 @default.
• W2000888988 cites W2048177168 @default.
• W2000888988 cites W2056773812 @default.
• W2000888988 cites W2070308025 @default.
• W2000888988 cites W2075487376 @default.
• W2000888988 cites W2077409318 @default.
• W2000888988 cites W2081571267 @default.
• W2000888988 cites W2084972273 @default.
• W2000888988 cites W2129328760 @default.
• W2000888988 cites W2145956196 @default.
• W2000888988 doi "https://doi.org/10.1021/jp943066n" @default.
• W2000888988 hasPublicationYear "1996" @default.
• W2000888988 type Work @default.
• W2000888988 sameAs 2000888988 @default.
• W2000888988 citedByCount "25" @default.
• W2000888988 countsByYear W20008889882012 @default.
• W2000888988 countsByYear W20008889882013 @default.
• W2000888988 countsByYear W20008889882014 @default.
• W2000888988 countsByYear W20008889882016 @default.
• W2000888988 countsByYear W20008889882017 @default.
• W2000888988 countsByYear W20008889882018 @default.
• W2000888988 countsByYear W20008889882019 @default.
• W2000888988 countsByYear W20008889882021 @default.
• W2000888988 countsByYear W20008889882023 @default.
• W2000888988 crossrefType "journal-article" @default.
• W2000888988 hasAuthorship W2000888988A5006195828 @default.
• W2000888988 hasAuthorship W2000888988A5013748007 @default.
• W2000888988 hasAuthorship W2000888988A5030602706 @default.
• W2000888988 hasAuthorship W2000888988A5044150509 @default.
• W2000888988 hasAuthorship W2000888988A5054360380 @default.
• W2000888988 hasAuthorship W2000888988A5071940002 @default.
• W2000888988 hasAuthorship W2000888988A5072716963 @default.
• W2000888988 hasAuthorship W2000888988A5074590540 @default.
• W2000888988 hasAuthorship W2000888988A5077779563 @default.
• W2000888988 hasAuthorship W2000888988A5085830642 @default.
• W2000888988 hasConcept C113196181 @default.
• W2000888988 hasConcept C119824511 @default.
• W2000888988 hasConcept C120665830 @default.
• W2000888988 hasConcept C121332964 @default.
• W2000888988 hasConcept C171001562 @default.
• W2000888988 hasConcept C185592680 @default.
• W2000888988 hasConcept C32891209 @default.
• W2000888988 hasConcept C43617362 @default.
• W2000888988 hasConcept C54582936 @default.
• W2000888988 hasConcept C62520636 @default.
• W2000888988 hasConcept C75473681 @default.
• W2000888988 hasConcept C91881484 @default.
• W2000888988 hasConceptScore W2000888988C113196181 @default.
• W2000888988 hasConceptScore W2000888988C119824511 @default.
• W2000888988 hasConceptScore W2000888988C120665830 @default.
• W2000888988 hasConceptScore W2000888988C121332964 @default.
• W2000888988 hasConceptScore W2000888988C171001562 @default.
• W2000888988 hasConceptScore W2000888988C185592680 @default.
• W2000888988 hasConceptScore W2000888988C32891209 @default.
• W2000888988 hasConceptScore W2000888988C43617362 @default.
• W2000888988 hasConceptScore W2000888988C54582936 @default.
• W2000888988 hasConceptScore W2000888988C62520636 @default.
• W2000888988 hasConceptScore W2000888988C75473681 @default.
• W2000888988 hasConceptScore W2000888988C91881484 @default.
• W2000888988 hasIssue "9" @default.
• W2000888988 hasLocation W20008889881 @default.
• W2000888988 hasOpenAccess W2000888988 @default.
• W2000888988 hasPrimaryLocation W20008889881 @default.
• W2000888988 hasRelatedWork W1974764037 @default.
• W2000888988 hasRelatedWork W1995019591 @default.
• W2000888988 hasRelatedWork W2016262608 @default.
• W2000888988 hasRelatedWork W2024770896 @default.
• W2000888988 hasRelatedWork W2067138310 @default.
• W2000888988 hasRelatedWork W2111307291 @default.
• W2000888988 hasRelatedWork W2461429047 @default.
• W2000888988 hasRelatedWork W2888624576 @default.

• next