A dihedral angle‐vicinal proton coupling constant correlation for the α–β bond of amino acid residues
A dihedral angle‐vicinal proton coupling constant correlation for the α–β bond of amino acid residues
复制标题
氨基酸残基α-β键的二面角邻位质子耦合常数相关性
DOI:
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发表时间:
1973
期刊:
影响因子:
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通讯作者:
Ralph Tauke
中科院分区:
文献类型:
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作者:
K. Kopple;G. R. Wiley;Ralph Tauke
A coupling constant‐dihedral angle correlation for the HCαCβH system of amino acid residues in peptides has been derived from a set of model compounds covering the full range of dihedral angles. The expression obtained, J = 11.0 cos2 θ −1.4 cos θ + 1.6 sin2θ, is close to those already used in pmr studies of peptide conformation, and provides a firmer foundation for them. A factor limiting the precision of this and other “Karplus relations” is illustrated.