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首页> 外文期刊>Journal of Agricultural and Food Chemistry >POTENTIAL BETA-SHEET SURFACES OF CORN AND WHEAT PROTEINS
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POTENTIAL BETA-SHEET SURFACES OF CORN AND WHEAT PROTEINS

机译:玉米和小麦蛋白的潜在贝塔表表面

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摘要

Comparison of computed profiles for beta-sheet conformations of zein, glutelin, gliadin, glutenin, and other cereal or nonplant proteins discloses unusual distributions of volume, polarity, and chemical functionality as well as inter- and intraspecific surface analogies between dissimilar amino acid sequences. Volume and polarity surfaces of major cereal proteins are more like those of collagen or fibrinogen than those of silk or hydrocarbon polymers. Potentially useful segments occur nonrandomly. A low molecular weight glutenin fragment approximates two-thirds of human gamma-fibrinogen. Four others duplicate the polarity of 25-50% of collagen. Ten exceptionally asymmetric segments show potential for inclusion in film-forming preparations and adhesives. Ultrahydrophobic sequences in corn oil body oleosins approach the diameter of spider silk, match its uniformity, and exceed its hydrophobicity.
机译:玉米醇溶蛋白,谷蛋白,麦醇溶蛋白,谷蛋白和其他谷物或非植物蛋白的β-折叠构象的计算轮廓比较表明,不同氨基酸序列之间存在体积,极性和化学功能以及种间和种内表面类似物的异常分布。主要谷物蛋白质的体积和极性表面比丝绸或烃类聚合物的体积和极性表面更像胶原蛋白或纤维蛋白原。潜在有用的细分是非随机出现的。低分子量谷蛋白片段约占人类γ-纤维蛋白原的三分之二。其他四个重复了25-50%胶原蛋白的极性。十个异常不对称的链段显示出可能包含在成膜制剂和粘合剂中。玉米油体油质蛋白中的超疏水序列接近蜘蛛丝的直径,匹配其均匀性,并超过其疏水性。

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