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  • Title: Proton magnetic resonance studies on [methionine]-enkephalin and beta-endorphin in aqueous solution.
    Author: Levine BA, Rabenstein DL, Smyth D, Williams RJ.
    Journal: Biochim Biophys Acta; 1979 Aug 28; 579(2):279-90. PubMed ID: 534645.
    Abstract:
    Proton magnetic resonance studies of [Met5]-enkephalin (lipotropin 61-65) in aqueous solution indicate a conformational preference for the pentapeptide backbone. The structural differences between [Met5]-enkephalin and other, more flexible peptides have been investigated using paramagnetic probe techniques. An outline structure for beta-endorphin (lipotropin 61-91) in aqueous solution is obtained from binding studies using Gd(III) as a relaxation probe.
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