Synthesis and structural investigations of N-alkylated β-peptidosulfonamide–peptide hybrids of the amyloidogenic amylin(20–29) sequence: implications of supramolecular folding for the design of peptide-based bionanomaterials
作者:Ronald C. Elgersma、Tania Meijneke、Remco de Jong、Arwin J. Brouwer、George Posthuma、Dirk T. S. Rijkers、Rob M. J. Liskamp
DOI:10.1039/b606875h
日期:——
The incorporation of a single β-aminoethane sulfonyl amide moiety in a highly amyloidogenic peptide sequence resulted in a complete loss of amyloid fibril formation. Instead, supramolecular folding morphologies were observed. Subsequent chemoselective N-alkylation of the sulfonamide resulted in amphiphilic peptide-based hydrogelators. It was found that variation of merely the alkyl chain induced a dramatic variation in aggregation motifs such as helical ribbons and tapes, ribbons progressing to closed tubes, twisted lamellar sheets and entangled/branched fibers.
在高度淀粉样蛋白生成肽序列中加入单个δ-氨基乙烷磺酰基酰胺分子后,淀粉样蛋白纤维的形成完全消失。取而代之的是超分子折叠形态。随后对磺酰胺进行化学选择性 N-烷基化处理,就得到了两亲肽基水凝胶剂。研究发现,仅烷基链的变化就会引起聚集形态的巨大变化,如螺旋带状和带状、带状发展为封闭管状、扭曲的片状和缠结/分支纤维。