| pubmed-article:2271702 | rdf:type | pubmed:Citation | lld:pubmed |
| pubmed-article:2271702 | lifeskim:mentions | umls-concept:C0031857 | lld:lifeskim |
| pubmed-article:2271702 | lifeskim:mentions | umls-concept:C0376315 | lld:lifeskim |
| pubmed-article:2271702 | lifeskim:mentions | umls-concept:C0231881 | lld:lifeskim |
| pubmed-article:2271702 | lifeskim:mentions | umls-concept:C0936012 | lld:lifeskim |
| pubmed-article:2271702 | pubmed:issue | 50 | lld:pubmed |
| pubmed-article:2271702 | pubmed:dateCreated | 1991-2-26 | lld:pubmed |
| pubmed-article:2271702 | pubmed:abstractText | Resonance Raman vibrational spectra of the Pr and Pfr forms of oat phytochrome have been obtained at room temperature. When Pr is converted to Pfr, new bands appear in the C = C and C = N stretching region at 1622, 1599, and 1552 cm-1, indicating that a major structural change of the chromophore has occurred. The Pr to Pfr conversion results in an 11 cm-1 lowering of the N-H rocking band from 1323 to 1312 cm-1. Normal mode calculations correlate this frequency drop with a Z----E isomerization about the C15 = C16 bond. A line at 803 cm-1 in Pr is replaced by an unusually intense mode at 814 cm-1 in Pfr. Calculations on model tetrapyrrole chromophores suggest that these low-wavenumber modes are hydrogen out-of-plane (HOOP) wagging vibrations of the bridging C15 methine hydrogen and that both the intensity and frequency of the C15 HOOP mode are sensitive to the geometry around the C14-C15 and C15 = C16 bonds. The large intensity of the 814-cm-1 mode in Pfr indicates that the chromophore is highly distorted from planarity around the C15 methine bridge. If the Pr----Pfr conversion does involve a C15 = C16 Z----E isomerization, then the intensity of the C15 HOOP mode in Pfr argues that the chromophore has an E,anti conformation. On the basis of a comparison with the vibrational calculations, the low frequency (803 cm-1) and the reduced intensity of the C15 HOOP mode in Pr suggest that the chromophore in Pr adopts the C15-Z,syn conformation. | lld:pubmed |
| pubmed-article:2271702 | pubmed:grant | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:2271702 | pubmed:language | eng | lld:pubmed |
| pubmed-article:2271702 | pubmed:journal | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:2271702 | pubmed:citationSubset | IM | lld:pubmed |
| pubmed-article:2271702 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:2271702 | pubmed:chemical | http://linkedlifedata.com/r... | lld:pubmed |
| pubmed-article:2271702 | pubmed:status | MEDLINE | lld:pubmed |
| pubmed-article:2271702 | pubmed:month | Dec | lld:pubmed |
| pubmed-article:2271702 | pubmed:issn | 0006-2960 | lld:pubmed |
| pubmed-article:2271702 | pubmed:author | pubmed-author:MathiesR ARA | lld:pubmed |
| pubmed-article:2271702 | pubmed:author | pubmed-author:LagariasJ CJC | lld:pubmed |
| pubmed-article:2271702 | pubmed:author | pubmed-author:FodorS PSP | lld:pubmed |
| pubmed-article:2271702 | pubmed:issnType | Print | lld:pubmed |
| pubmed-article:2271702 | pubmed:day | 18 | lld:pubmed |
| pubmed-article:2271702 | pubmed:volume | 29 | lld:pubmed |
| pubmed-article:2271702 | pubmed:owner | NLM | lld:pubmed |
| pubmed-article:2271702 | pubmed:authorsComplete | Y | lld:pubmed |
| pubmed-article:2271702 | pubmed:pagination | 11141-6 | lld:pubmed |
| pubmed-article:2271702 | pubmed:dateRevised | 2007-11-14 | lld:pubmed |
| pubmed-article:2271702 | pubmed:meshHeading | pubmed-meshheading:2271702-... | lld:pubmed |
| pubmed-article:2271702 | pubmed:meshHeading | pubmed-meshheading:2271702-... | lld:pubmed |
| pubmed-article:2271702 | pubmed:meshHeading | pubmed-meshheading:2271702-... | lld:pubmed |
| pubmed-article:2271702 | pubmed:meshHeading | pubmed-meshheading:2271702-... | lld:pubmed |
| pubmed-article:2271702 | pubmed:meshHeading | pubmed-meshheading:2271702-... | lld:pubmed |
| pubmed-article:2271702 | pubmed:meshHeading | pubmed-meshheading:2271702-... | lld:pubmed |
| pubmed-article:2271702 | pubmed:meshHeading | pubmed-meshheading:2271702-... | lld:pubmed |
| pubmed-article:2271702 | pubmed:meshHeading | pubmed-meshheading:2271702-... | lld:pubmed |
| pubmed-article:2271702 | pubmed:year | 1990 | lld:pubmed |
| pubmed-article:2271702 | pubmed:articleTitle | Resonance Raman analysis of the Pr and Pfr forms of phytochrome. | lld:pubmed |
| pubmed-article:2271702 | pubmed:affiliation | Department of Chemistry, University of California, Berkeley 94720. | lld:pubmed |
| pubmed-article:2271702 | pubmed:publicationType | Journal Article | lld:pubmed |
| pubmed-article:2271702 | pubmed:publicationType | Research Support, U.S. Gov't, P.H.S. | lld:pubmed |
| pubmed-article:2271702 | pubmed:publicationType | Research Support, U.S. Gov't, Non-P.H.S. | lld:pubmed |
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