rdf:type |
|
lifeskim:mentions |
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pubmed:issue |
9
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pubmed:dateCreated |
1983-8-11
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pubmed:abstractText |
A fluorine NMR study of cyanomethemoglobin prepared from hemoglobin isolated from rabbits maintained on a diet containing DL-p-fluorophenylalanine is described. The results indicate that substitution of fluorophenylalanine occurs essentially randomly at all phenylalanine positions of the alpha- and beta-globin chains; a set of hybrid hemoglobins in which only the alpha- or only the beta-chains contain the fluorinated amino acid was prepared and used to ascertain the fluorine NMR signals arising from each chain. The temperature and pH dependences of chemical shifts, spin-lattice relaxation times, 19F(1H) nuclear Overhauser effects, and the effect of chemical modification of the beta-93 sulfhydryl groups were examined. When considered in light of presently available X-ray structures of human and horse hemoglobins, the available data permit a tentative assignment of most signals to particular fluorophenylalanine/phenylalanine positions in the globin sequences.
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pubmed:grant |
|
pubmed:language |
eng
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pubmed:journal |
|
pubmed:citationSubset |
IM
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pubmed:chemical |
|
pubmed:status |
MEDLINE
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pubmed:month |
Apr
|
pubmed:issn |
0006-2960
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pubmed:author |
|
pubmed:issnType |
Print
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pubmed:day |
26
|
pubmed:volume |
22
|
pubmed:owner |
NLM
|
pubmed:authorsComplete |
Y
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pubmed:pagination |
2076-87
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pubmed:dateRevised |
2008-11-21
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pubmed:meshHeading |
pubmed-meshheading:6305406-Amino Acids,
pubmed-meshheading:6305406-Animals,
pubmed-meshheading:6305406-Electron Spin Resonance Spectroscopy,
pubmed-meshheading:6305406-Hemoglobins,
pubmed-meshheading:6305406-Hydrogen-Ion Concentration,
pubmed-meshheading:6305406-Magnetic Resonance Spectroscopy,
pubmed-meshheading:6305406-Mathematics,
pubmed-meshheading:6305406-Methemoglobin,
pubmed-meshheading:6305406-Peptide Fragments,
pubmed-meshheading:6305406-Protein Multimerization,
pubmed-meshheading:6305406-Rabbits,
pubmed-meshheading:6305406-Tyrosine,
pubmed-meshheading:6305406-p-Fluorophenylalanine
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pubmed:year |
1983
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pubmed:articleTitle |
Assignment of fluorine nuclear magnetic resonance signals from rabbit cyanomethemoglobin.
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pubmed:publicationType |
Journal Article,
Research Support, U.S. Gov't, P.H.S.,
Research Support, U.S. Gov't, Non-P.H.S.
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