SusChEM: Biomimetics of the [FeFe]-H2ase enzyme active site (EAS)

SusChEM：[FeFe]-H2ase 酶活性位点 (EAS) 的仿生学

• 批准号: 1266097
• 负责人: Marcetta Darensbourg
• 金额: $ 60万
• 依托单位: Texas A&M University
• 依托单位国家: 美国
• 项目类别: Standard Grant
• 财政年份: 2013
• 资助国家: 美国
• 起止时间: 2013-05-01 至 2017-09-30
• 项目状态: 已结题
• 来源: https://www.nsf.gov/awardsearch/showAward?AWD_ID=1266097&HistoricalAwards=false
• 关键词: SusChEM; Biomimetics; FeFe; H2ase; enzyme

In this project funded by the Chemical Synthesis Program of the Chemistry Division, Professor Marcetta Y. Darensbourg of the Department of Chemistry at Texas A & M University will develop synthetic analogues of the iron- and nickel-containing active sites of hydrogen-processing biocatalysts known as Hydrogenases. The PI's group reproduces almost precise structural models of the unique and illusive "rotated" structure found in the diiron hydrogenase, and displayed in the as-isolated, mixed-valent FeIIFeI state of the enzyme. In depth analysis of the electronic structure of the models by Mössbauer, EPR (ENDOR), and computational chemistry stimulates the design of advanced biomimetics, and its ability to serve as hydrogen-evolving electrocatalysts will be screened by cyclic voltammetry. Through continued collaborations, such catalysts will be analyzed for electronic structures and for applications to dye-sensitized photocatalysis. The PI's group is diverse and contributes to the annual Chemistry Open House, the Expanding Your Horizons program for 6th grade girls, and other outreach programs, such as NOBCChE. In a broad scope, this work addresses the role of hydrogen as an energy vector--in energy storage applications, and the need for sustainable catalysts in both the production and utilization of hydrogen. The sustainable energy-related research area impacts society as a whole and represents cross-disciplinary and collaborative training opportunities for students. The research inspires coworkers to gain a broad scientific knowledge base in chemistry, biology, spectroscopy, theory, etc., and to be ever alert for the universal language of science, chemistry in particular, for the solving of problems.

在这个由化学系化学合成项目资助的项目中，德克萨斯农工大学化学系的Marcetta Y. Darensbourg教授将开发已知的制氢生物催化剂的含铁和含镍活性位点的合成类似物PI 的研究小组重现了二铁氢化酶中独特且虚幻的“旋转”结构的几乎精确的结构模型，并将其展示在穆斯堡尔、EPR (ENDOR) 和计算化学对酶的分离、混合价 FeIIFeI 状态的深入分析促进了先进仿生学的设计及其作为析氢的能力。通过持续合作，将通过循环伏安法筛选电催化剂，并分析此类催化剂的电子结构及其在染料敏化光催化中的应用。多样化，并为年度化学开放日、六年级女生的“拓展视野”计划以及其他外展计划（例如 NOBCChE）做出贡献。在广泛的范围内，这项工作探讨了氢作为能量载体在能量存储中的作用。可持续能源相关的研究领域影响着整个社会，并为学生提供了跨学科和协作的培训机会。知识库在化学、生物学、光谱学、理论等，并时刻警惕科学的通用语言，特别是化学，以解决问题。