• 文献检索
  • 文档翻译
  • 深度研究
  • 学术资讯
  • Suppr Zotero 插件Zotero 插件
  • 邀请有礼
  • 套餐&价格
  • 历史记录
应用&插件
Suppr Zotero 插件Zotero 插件浏览器插件Mac 客户端Windows 客户端微信小程序
定价
高级版会员购买积分包购买API积分包
服务
文献检索文档翻译深度研究API 文档MCP 服务
关于我们
关于 Suppr公司介绍联系我们用户协议隐私条款
关注我们

Suppr 超能文献

核心技术专利:CN118964589B侵权必究
粤ICP备2023148730 号-1Suppr @ 2026

文献检索

告别复杂PubMed语法,用中文像聊天一样搜索,搜遍4000万医学文献。AI智能推荐,让科研检索更轻松。

立即免费搜索

文件翻译

保留排版,准确专业,支持PDF/Word/PPT等文件格式,支持 12+语言互译。

免费翻译文档

深度研究

AI帮你快速写综述,25分钟生成高质量综述,智能提取关键信息,辅助科研写作。

立即免费体验

人降钙素原纤维的结构与形成机制。

The structure and mechanism of formation of human calcitonin fibrils.

作者信息

Arvinte T, Cudd A, Drake A F

机构信息

Ciba-Geigy Pharmaceuticals, Horsham, United Kingdom.

出版信息

J Biol Chem. 1993 Mar 25;268(9):6415-22.

PMID:8454614
Abstract

Turbidity measurements of the kinetics of human calcitonin (hCT) fibrillation showed a linear dependence of the logarithm of fibrillation time (the time the sample is not fibrillated) and the logarithm of hCT concentration. This ln/ln plot linearity and electron microscope observations of fibrils indicate that the fibrillation process can be explained by the double nucleation mechanism that was proposed for the gelation of sickle cell hemoglobin (Ferrone, F. A., Hofrichter, J., Sunshine, H. R., and Eaton, W. A. (1980) Biophys. J. 32, 361-380). Circular dichroism, fluorescence, and infrared spectroscopy studies of fibrils showed that hCT molecules have alpha-helical and beta-sheet secondary structure components. A model for the structure of hCT molecules in fibrils is proposed.

摘要

对人降钙素(hCT)纤维化动力学的浊度测量表明,纤维化时间(样品未发生纤维化的时间)的对数与hCT浓度的对数呈线性关系。这种ln/ln图的线性以及对纤维的电子显微镜观察表明,纤维化过程可以用为镰状细胞血红蛋白凝胶化所提出的双核化机制来解释(费罗内,F.A.,霍夫里希特,J.,桑夏恩,H.R.,和伊顿,W.A.(1980年)《生物物理学杂志》32卷,361 - 380页)。对纤维的圆二色性、荧光和红外光谱研究表明,hCT分子具有α - 螺旋和β - 折叠二级结构成分。提出了纤维中hCT分子结构的模型。

相似文献

1
The structure and mechanism of formation of human calcitonin fibrils.人降钙素原纤维的结构与形成机制。
J Biol Chem. 1993 Mar 25;268(9):6415-22.
2
Conformational transitions and fibrillation mechanism of human calcitonin as studied by high-resolution solid-state 13C NMR.通过高分辨率固态13C核磁共振研究人降钙素的构象转变和纤维化机制
Protein Sci. 2000 May;9(5):867-77. doi: 10.1110/ps.9.5.867.
3
Theoretical description of the spatial dependence of sickle hemoglobin polymerization.镰状血红蛋白聚合空间依赖性的理论描述。
Biophys J. 1990 Sep;58(3):695-703. doi: 10.1016/S0006-3495(90)82412-7.
4
Characterization of the spherical intermediates and fibril formation of hCT in HEPES solution using solid-state 13C-NMR and transmission electron microscopy.使用固态 13C-NMR 和透射电子显微镜研究 hCT 在 HEPES 溶液中的球形中间体和原纤维形成。
Phys Chem Chem Phys. 2013 Oct 21;15(39):16956-64. doi: 10.1039/c3cp52810c. Epub 2013 Sep 4.
5
Kinetics of domain formation by sickle hemoglobin polymers.镰状血红蛋白聚合物形成结构域的动力学。
Biophys J. 1988 Nov;54(5):829-43. doi: 10.1016/S0006-3495(88)83020-0.
6
Correlations between biological activities and conformational properties for human, salmon, eel, porcine calcitonins and Elcatonin elucidated by CD spectroscopy.通过圆二色光谱法阐明人、鲑鱼、鳗鱼、猪降钙素及依降钙素的生物活性与构象性质之间的相关性。
Eur J Biochem. 1994 May 1;221(3):1117-25. doi: 10.1111/j.1432-1033.1994.tb18832.x.
7
A dimer model of human calcitonin13-32 forms an α-helical structure and robustly aggregates in 50% aqueous 2,2,2-trifluoroethanol solution.人降钙素13 - 32的二聚体模型形成α - 螺旋结构,并在50%的2,2,2 - 三氟乙醇水溶液中强烈聚集。
J Pept Sci. 2016 Jul;22(7):480-4. doi: 10.1002/psc.2891. Epub 2016 May 30.
8
Effect of electrostatic interaction on fibril formation of human calcitonin as studied by high resolution solid state 13C NMR.通过高分辨率固态¹³C核磁共振研究静电相互作用对人降钙素纤维形成的影响。
J Biol Chem. 2003 Jan 31;278(5):2859-65. doi: 10.1074/jbc.M205285200. Epub 2002 Nov 21.
9
NMR characterization of monomeric and oligomeric conformations of human calcitonin and its interaction with EGCG.人降钙素单体和寡聚构象的 NMR 表征及其与 EGCG 的相互作用。
J Mol Biol. 2012 Feb 10;416(1):108-20. doi: 10.1016/j.jmb.2011.12.023. Epub 2011 Dec 17.
10
Role of aromatic residues in amyloid fibril formation of human calcitonin by solid-state 13C NMR and molecular dynamics simulation.固态 13C NMR 和分子动力学模拟研究芳香族残基在人降钙素淀粉样纤维形成中的作用。
Phys Chem Chem Phys. 2013 Jun 21;15(23):8890-901. doi: 10.1039/c3cp44544e. Epub 2013 Apr 3.

引用本文的文献

1
Secondary Structures of Human Calcitonin at Different Temperatures and in Different Membrane-Mimicking Environments, Characterized by Circular Dichroism (CD) Spectroscopy.通过圆二色光谱(CD)表征人降钙素在不同温度和不同模拟膜环境中的二级结构
ACS Omega. 2025 Apr 22;10(17):17133-17142. doi: 10.1021/acsomega.4c05312. eCollection 2025 May 6.
2
Change in the Kinetic Regime of Aggregation of Yeast Alcohol Dehydrogenase in the Presence of 2-Hydroxypropyl-β-cyclodextrin.2-羟丙基-β-环糊精存在下酵母醇脱氢酶聚集的动力学状态的变化。
Int J Mol Sci. 2023 Nov 9;24(22):16140. doi: 10.3390/ijms242216140.
3
Investigating the inhibitory property of DM hCT on hCT fibrillization via its relevant peptide fragments.
通过其相关肽段研究 DM hCT 对 hCT 纤维化的抑制特性。
Protein Sci. 2023 Aug;32(8):e4711. doi: 10.1002/pro.4711.
4
Fibril Structure Demonstrates the Role of Iodine Labelling on a Pentapeptide Self-Assembly.纤维结构证明了碘标记在五肽自组装中的作用。
Chemistry. 2022 Mar 7;28(14):e202104089. doi: 10.1002/chem.202104089. Epub 2022 Feb 17.
5
Dopamine-Conjugated Carbon Dots Inhibit Human Calcitonin Fibrillation.多巴胺共轭碳点抑制人降钙素纤维化。
Nanomaterials (Basel). 2021 Aug 30;11(9):2242. doi: 10.3390/nano11092242.
6
Fibrillation of Human Calcitonin and Its Analogs: Effects of Phosphorylation and Disulfide Reduction.人降钙素及其类似物的原纤化:磷酸化和二硫键还原的影响
Biophys J. 2021 Jan 5;120(1):86-100. doi: 10.1016/j.bpj.2020.11.009. Epub 2020 Nov 18.
7
Flavonoids with Vicinal Hydroxyl Groups Inhibit Human Calcitonin Amyloid Formation.具有邻位羟基的黄酮类化合物抑制人降钙素淀粉样纤维形成。
Chemistry. 2020 Oct 9;26(57):13063-13071. doi: 10.1002/chem.202002027. Epub 2020 Sep 11.
8
Effects of disulfide bond and cholesterol derivatives on human calcitonin amyloid formation.二硫键和胆固醇衍生物对人降钙素淀粉样纤维形成的影响。
Biopolymers. 2020 May;111(5):e23343. doi: 10.1002/bip.23343. Epub 2019 Dec 5.
9
Not All β-Sheets Are the Same: Amyloid Infrared Spectra, Transition Dipole Strengths, and Couplings Investigated by 2D IR Spectroscopy.并非所有β-折叠都相同:通过二维红外光谱研究淀粉样蛋白的红外光谱、跃迁偶极子强度和耦合。
J Phys Chem B. 2017 Sep 28;121(38):8935-8945. doi: 10.1021/acs.jpcb.7b06826. Epub 2017 Sep 19.
10
Growth-incompetent monomers of human calcitonin lead to a noncanonical direct relationship between peptide concentration and aggregation lag time.人降钙素的生长无活性单体导致肽浓度与聚集滞后时间之间呈现非典型的直接关系。
J Biol Chem. 2017 Sep 8;292(36):14963-14976. doi: 10.1074/jbc.M117.791236. Epub 2017 Jul 24.