C<sub>11</sub>
/C<sub>9</sub>
Helical Folding in αβ Hybrid Peptides Containing 1-Amino-cyclohexane acetic acid (β<sup>3, 3</sup>
-Ac<sub>6</sub>
c)
作者:Naiem Ahmad Wani、Srinivasarao Raghothama、Umesh Prasad Singh、Rajkishor Rai
DOI:10.1002/chem.201700265
日期:2017.6.22
helical conformation stabilized by mixed types of C11/C9 intramolecular hydrogen bonds. In peptide P3, the amino group of β3, 3‐Ac6c(2) and β3, 3‐Ac6c(4) residues occupies axial orientation, whereas in P2 it occupies axial and equatorial orientations for residues β3, 3‐Ac6c(2) and β3, 3‐Ac6c(4), respectively. The self‐assembly of P3 forms channels filled with solvent molecules that present interesting
本研究描述αβ杂合肽的固态构象,Boc-亮氨酸β 3,3 -Ac 6 C-OH,P1 ; Boc‐Leu‐β 3,3 ‐ Ac 6 c‐Leu‐β 3,3 ‐ Ac 6 c‐OMe,P2 ; 和Boc-LEU-β 3,3 -Ac 6的c-LEU-β 3,3 -Ac 6的c-LEU-OME,P3。二肽P1具有扩展的构象,而四肽P2和五肽P3则具有通过混合类型的C 11 / C 9稳定的螺旋构象。分子内氢键。在肽P3,氨基的β 3,3 -Ac 6 C(2)和β 3,3 -Ac 6 C(4)的残基占据轴向定向,而在P2占据了残基β轴向和赤道方向3, 3 -Ac 6 C(2)和β 3,3 -Ac 6分别C(4),。P3的自组装形成了充满溶剂分子的通道,这些溶剂分子呈现出有趣的图案。