Dynamics of Alanine Methyl Groups in Alanine Oligopeptides and Spider Dragline Silks with Different Packing Structures As Studied by 13C Solid-State NMR Relaxation
| العنوان: | Dynamics of Alanine Methyl Groups in Alanine Oligopeptides and Spider Dragline Silks with Different Packing Structures As Studied by 13C Solid-State NMR Relaxation |
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| المؤلفون: | Yugo Tasei, Tetsuo Asakura, Akira Naito, Hironori Matsuda |
| المصدر: | Macromolecules. 51:6746-6756 |
| بيانات النشر: | American Chemical Society (ACS), 2018. |
| سنة النشر: | 2018 |
| مصطلحات موضوعية: | Alanine, Spider, Oligopeptide, Nephila clavata, Polymers and Plastics, biology, Chemistry, Organic Chemistry, Relaxation (NMR), technology, industry, and agriculture, 02 engineering and technology, 010402 general chemistry, 021001 nanoscience & nanotechnology, biology.organism_classification, 01 natural sciences, 0104 chemical sciences, Relaxation behavior, Inorganic Chemistry, Crystallography, Solid-state nuclear magnetic resonance, Materials Chemistry, 0210 nano-technology |
| الوصف: | The dynamics of alanine methyl groups in alanine oligopeptides and polyalanine regions in Nephila clavata dragline and recombinant silks changed remarkably depending on the different packing arrangements. In particular, a notable difference in the 13C spin–lattice relaxation time T1 of Ala Cβ peaks was observed in the solid-state NMR between (Ala)6 and (Ala)7, which have rectangular and staggered packing arrangements, respectively. Moreover, the remarkably longer T1 value of the lowest field peak in Ala Cβ carbons clearly indicated the presence of staggered packing structure. Then, the relaxation behavior of polyalanine regions in spider dragline silks with mixed packing arrangements were clarified in both dry and hydrated states. The partial appearance of the staggered packing structure in (Ala)6 with rectangular packing structure was detected from the changes in line shapes of Ala 13Cβ peaks for the three kinds of 13C single-labeled (Ala)6 samples together with the change in their relaxation behavior. |
| تدمد: | 1520-5835 0024-9297 |
| الوصول الحر: | https://explore.openaire.eu/search/publication?articleId=doi_________::06fca4b02a5e7fb738b9898625ffdf23Test https://doi.org/10.1021/acs.macromol.8b01402Test |
| رقم الانضمام: | edsair.doi...........06fca4b02a5e7fb738b9898625ffdf23 |
| قاعدة البيانات: | OpenAIRE |
| تدمد: | 15205835 00249297 |
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