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Predicate | Object |
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rdf:type | |
lifeskim:mentions | |
pubmed:issue |
4
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pubmed:dateCreated |
1992-8-4
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pubmed:abstractText |
Human insulin-like growth factor-I (IGF-I) was studied by two-dimensional 1H-NMR spectroscopy. Resonance assignments were obtained for all the backbone protons and almost all of the sidechain protons of the total 70 amino acid residues, using sequence-specific assignment procedures. The secondary structure elements of human IGF-I were identified by investigation of the sequential and medium range NOEs as a preliminary step in determining the three-dimensional structure of this protein by means of distance geometry calculations. The typical NOEs of d alpha beta(i,i + 3) and d alpha N(i,i + 3), as well as the successive strong NOEs of dNN connectivities and slowly exchanging amide protons confirmed the presence of three helical segments corresponding to the sequence regions, Ala8-Cys18, Gly42-Cys48, and Leu54-Cys61, and the existence of a beta-turn in the Gly19-Gly22 region. Our results definitely indicate that the secondary structure of human IGF-I in solution is consistent with that of insulin in the crystalline state.
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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
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pubmed:issn |
0021-924X
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pubmed:author | |
pubmed:issnType |
Print
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pubmed:volume |
111
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pubmed:owner |
NLM
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pubmed:authorsComplete |
Y
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pubmed:pagination |
529-36
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pubmed:dateRevised |
2007-12-19
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pubmed:meshHeading |
pubmed-meshheading:1319992-Amino Acid Sequence,
pubmed-meshheading:1319992-Humans,
pubmed-meshheading:1319992-Insulin-Like Growth Factor I,
pubmed-meshheading:1319992-Magnetic Resonance Spectroscopy,
pubmed-meshheading:1319992-Molecular Sequence Data,
pubmed-meshheading:1319992-Protein Conformation,
pubmed-meshheading:1319992-Protons,
pubmed-meshheading:1319992-Spin Labels
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pubmed:year |
1992
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pubmed:articleTitle |
1H-NMR assignment and secondary structure of human insulin-like growth factor-I (IGF-I) in solution.
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pubmed:affiliation |
Research Laboratory, Fujisawa Pharmaceutical Co., Ltd., Osaka.
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pubmed:publicationType |
Journal Article
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