{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,10]],"date-time":"2026-06-10T16:18:38Z","timestamp":1781108318310,"version":"3.54.1"},"reference-count":0,"publisher":"National Academy of Sciences","issue":"8","content-domain":{"domain":["www.pnas.org"],"crossmark-restriction":true},"short-container-title":["Proc. Natl. Acad. Sci. U.S.A."],"published-print":{"date-parts":[[1972,8]]},"abstract":"<jats:p>\n                    High-resolution proton nuclear magnetic resonance spectra were studied in D(+)-camphor-saturated solutions of ferric and ferrous cytochrome P450\n                    <jats:sub>cam<\/jats:sub>\n                    from\n                    <jats:italic>Pseudomonas putida<\/jats:italic>\n                    , and of the cyanide complex of ferric P450\n                    <jats:sub>cam<\/jats:sub>\n                    . In all these compounds several hyperfineshifted resonances of the heme group could be detected. In the ferrous protein, these resonance lines, which exhibit a Curie-type temperature dependence in the range of 5-28\u00b0, indicate the presence of high-spin iron (II). It is suggested that the iron (II) in ferrous P450\n                    <jats:sub>cam<\/jats:sub>\n                    might be pentacoordinated, as in other hemoproteins that can reversibly bind molecular oxygen and carbon monoxide.\n                  <\/jats:p>","DOI":"10.1073\/pnas.69.8.2073","type":"journal-article","created":{"date-parts":[[2006,5,31]],"date-time":"2006-05-31T02:37:04Z","timestamp":1149043024000},"page":"2073-2075","update-policy":"https:\/\/doi.org\/10.1073\/pnas.cm10313","source":"Crossref","is-referenced-by-count":26,"title":["Proton Magnetic Resonance Reveals High-Spin Iron (II) in Ferrous Cytochrome P450\n                    <sub>cam<\/sub>\n                    from\n                    <i>Pseudomonas putida<\/i>"],"prefix":"10.1073","volume":"69","author":[{"given":"Regula M.","family":"Keller","sequence":"first","affiliation":[{"name":"Institut f\u00fcr Molekularbiologie and Biophysik, Eidgen\u00f6ssische Technische Hochschule, Z\u00fcrich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Kurt","family":"W\u00fcthrich","sequence":"additional","affiliation":[{"name":"Institut f\u00fcr Molekularbiologie and Biophysik, Eidgen\u00f6ssische Technische Hochschule, Z\u00fcrich, Switzerland"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Peter G.","family":"Debrunner","sequence":"additional","affiliation":[{"name":"Department of Physics, University of Illinois, Urbana, Ill. 61801"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"341","published-online":{"date-parts":[[1972,8]]},"container-title":["Proceedings of the National Academy of Sciences"],"original-title":[],"language":"en","link":[{"URL":"https:\/\/pnas.org\/doi\/pdf\/10.1073\/pnas.69.8.2073","content-type":"unspecified","content-version":"vor","intended-application":"similarity-checking"}],"deposited":{"date-parts":[[2022,4,13]],"date-time":"2022-04-13T10:42:25Z","timestamp":1649846545000},"score":1,"resource":{"primary":{"URL":"https:\/\/pnas.org\/doi\/full\/10.1073\/pnas.69.8.2073"}},"subtitle":[],"short-title":[],"issued":{"date-parts":[[1972,8]]},"references-count":0,"journal-issue":{"issue":"8","published-print":{"date-parts":[[1972,8]]}},"alternative-id":["10.1073\/pnas.69.8.2073"],"URL":"https:\/\/doi.org\/10.1073\/pnas.69.8.2073","relation":{},"ISSN":["0027-8424","1091-6490"],"issn-type":[{"value":"0027-8424","type":"print"},{"value":"1091-6490","type":"electronic"}],"subject":[],"published":{"date-parts":[[1972,8]]},"assertion":[{"value":"1972-08-01","order":2,"name":"published","label":"Published","group":{"name":"publication_history","label":"Publication History"}}]}}