FRINK Linked Data Fragments server

Matches in SemOpenAlex for { <https://semopenalex.org/work/W2040453384> ?p ?o ?g. }

• W2040453384 endingPage "290" @default.
• W2040453384 startingPage "273" @default.
• W2040453384 abstract "Siroheme has been extracted from sulfite reductases and its properties in aqueous solution have been investigated by optical absorption, electron paramagnetic resonance (EPR), and magnetic circular dichroism (MDC) spectroscopy. The absorption spectrum of siroheme exhibits a marked pH dependence, and two pK values, 4.2 and 9.0, were determined by pH titration in the range 2-12. The first pK (4.2) is thought to correspond to the ionization of the carboxylic acid side-chains on the tetrapyrrole rings, and the second pK (9.0) is attributed to displacement of the axial ligand chloride by hydroxide. The binding of the strong field ligands, CO, NO, and cyanide, were investigated by UV-visible absorption and, in the case of the cyanide complex, by low-temperature EPR and MCD spectroscopies. CO and NO were able to reduce and bind to siroheme without additional reducing agent. The EPR spectrum of the isolated siroheme (chloride-ferrisiroheme) exhibits an axial signal with g perpendicular = 6.0 and g parallel = 2.0, typical of high-spin ferric hemes (S = 5/2), whereas the cyanide-complexed siroheme exhibits an approximately axial signal with g perpendicular = 2.38 and g parallel = 1.76 that is indicative of a low-spin ferric heme (S = 1/2). The low-temperature MCD spectra and magnetization data for the as-isolated and cyanide-complexed ferrisiroheme are entirely consistent with the interpretation of the EPR spectra. The results for ferrosiroheme indicate that the siroheme remains high spin (S = 2) and low spin (S = 0) on reduction of the as-isolated and cyanide-complexed siroheme, respectively. The isolated siroheme expressed sulfite reductase activity but the assessable catalytic cycle was much less than that of the native enzyme, showing the importance of the protein environment." @default.
• W2040453384 created "2016-06-24" @default.
• W2040453384 creator A5019581407 @default.
• W2040453384 creator A5021602538 @default.
• W2040453384 creator A5029427629 @default.
• W2040453384 creator A5048763493 @default.
• W2040453384 date "1987-08-01" @default.
• W2040453384 modified "2023-09-26" @default.
• W2040453384 title "Spectroscopic Properties of Siroheme Extracted from Sulfite Reductases" @default.
• W2040453384 cites W1472228319 @default.
• W2040453384 cites W1488511398 @default.
• W2040453384 cites W1489679748 @default.
• W2040453384 cites W1515750629 @default.
• W2040453384 cites W1518359924 @default.
• W2040453384 cites W1543118671 @default.
• W2040453384 cites W1549951942 @default.
• W2040453384 cites W1583194975 @default.
• W2040453384 cites W1584350536 @default.
• W2040453384 cites W1584799712 @default.
• W2040453384 cites W1599725095 @default.
• W2040453384 cites W1602084887 @default.
• W2040453384 cites W1605165598 @default.
• W2040453384 cites W1834402428 @default.
• W2040453384 cites W1911499593 @default.
• W2040453384 cites W192854988 @default.
• W2040453384 cites W1970331184 @default.
• W2040453384 cites W1988464860 @default.
• W2040453384 cites W2006924060 @default.
• W2040453384 cites W2008557757 @default.
• W2040453384 cites W2025060094 @default.
• W2040453384 cites W2049712012 @default.
• W2040453384 cites W2051216640 @default.
• W2040453384 cites W2056626357 @default.
• W2040453384 cites W2060121377 @default.
• W2040453384 cites W2065314019 @default.
• W2040453384 cites W2066235797 @default.
• W2040453384 cites W2072945112 @default.
• W2040453384 cites W2076750307 @default.
• W2040453384 cites W2080071679 @default.
• W2040453384 cites W2085137444 @default.
• W2040453384 cites W2114760902 @default.
• W2040453384 cites W2161432018 @default.
• W2040453384 cites W2215078278 @default.
• W2040453384 cites W2320104494 @default.
• W2040453384 cites W2400301793 @default.
• W2040453384 cites W2418927096 @default.
• W2040453384 cites W2952374343 @default.
• W2040453384 cites W4293247451 @default.
• W2040453384 doi "https://doi.org/10.1016/0162-0134(87)80071-5" @default.
• W2040453384 hasPubMedId "https://pubmed.ncbi.nlm.nih.gov/3668524" @default.
• W2040453384 hasPublicationYear "1987" @default.
• W2040453384 type Work @default.
• W2040453384 sameAs 2040453384 @default.
• W2040453384 citedByCount "10" @default.
• W2040453384 countsByYear W20404533842012 @default.
• W2040453384 countsByYear W20404533842014 @default.
• W2040453384 crossrefType "journal-article" @default.
• W2040453384 hasAuthorship W2040453384A5019581407 @default.
• W2040453384 hasAuthorship W2040453384A5021602538 @default.
• W2040453384 hasAuthorship W2040453384A5029427629 @default.
• W2040453384 hasAuthorship W2040453384A5048763493 @default.
• W2040453384 hasConcept C121332964 @default.
• W2040453384 hasConcept C179104552 @default.
• W2040453384 hasConcept C185592680 @default.
• W2040453384 hasConcept C187961010 @default.
• W2040453384 hasConcept C2778455166 @default.
• W2040453384 hasConcept C2779830873 @default.
• W2040453384 hasConcept C46141821 @default.
• W2040453384 hasConcept C75473681 @default.
• W2040453384 hasConceptScore W2040453384C121332964 @default.
• W2040453384 hasConceptScore W2040453384C179104552 @default.
• W2040453384 hasConceptScore W2040453384C185592680 @default.
• W2040453384 hasConceptScore W2040453384C187961010 @default.
• W2040453384 hasConceptScore W2040453384C2778455166 @default.
• W2040453384 hasConceptScore W2040453384C2779830873 @default.
• W2040453384 hasConceptScore W2040453384C46141821 @default.
• W2040453384 hasConceptScore W2040453384C75473681 @default.
• W2040453384 hasIssue "4" @default.
• W2040453384 hasLocation W20404533841 @default.
• W2040453384 hasLocation W20404533842 @default.
• W2040453384 hasOpenAccess W2040453384 @default.
• W2040453384 hasPrimaryLocation W20404533841 @default.
• W2040453384 hasRelatedWork W1970076552 @default.
• W2040453384 hasRelatedWork W1975047428 @default.
• W2040453384 hasRelatedWork W2018311720 @default.
• W2040453384 hasRelatedWork W2031693090 @default.
• W2040453384 hasRelatedWork W2080077687 @default.
• W2040453384 hasRelatedWork W2095038985 @default.
• W2040453384 hasRelatedWork W2134965882 @default.
• W2040453384 hasRelatedWork W2158697880 @default.
• W2040453384 hasRelatedWork W3036319102 @default.
• W2040453384 hasRelatedWork W3139513355 @default.
• W2040453384 hasVolume "30" @default.
• W2040453384 isParatext "false" @default.
• W2040453384 isRetracted "false" @default.
• W2040453384 magId "2040453384" @default.
• W2040453384 workType "article" @default.