STRUCTURAL BIOLOGY OF THE ENAMEL PROTEINS

牙釉质蛋白质的结构生物学

• 批准号: 7601827
• 负责人: Janet M. Oldak
• 金额: $ 0.89万
• 依托单位: UNIVERSITY OF CALIFORNIA, SAN FRANCISCO
• 依托单位国家: 美国
• 财政年份: 2007
• 资助国家: 美国
• 起止时间: 2007-09-30 至 2008-05-31
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/7601827
• 关键词: Apatites; Architecture; Area; Biomimetics; Computer Retrieval of Information on Scientific Projects Database; Dental Enamel; Development; Endopeptidases; Extracellular Matrix; Funding; Future; Gel; Goals; Grant; Growth; In Vitro; Institution; Lead; MMP-20; Minerals; Molecular; Morphology; Nanosphere; Nature; Peptide Hydrolases; Proteins; Recombinants; Research; Research Activity; Research Personnel; Resources; Solutions; Source; Structure; United States National Institutes of Health; amelogenin; base; enamelin; enamelysin; octacalcium phosphate; self assembly; structural biology

This subproject is one of many research subprojects utilizing the resources provided by a Center grant funded by NIH/NCRR. The subproject and investigator (PI) may have received primary funding from another NIH source, and thus could be represented in other CRISP entries. The institution listed is for the Center, which is not necessarily the institution for the investigator. The major goal of our research activities is to advance our understanding of the fundamental molecular mechanisms involved in the formation of dental enamel. We postulate that such understanding will lead to the future development of biomimetic strategies for the creation of enamel-like mineral materials. We focus on two areas: 1. The structure and function of enamel extracellular matrix components. 2) The function and mechanism of action of enamel proteinase MMP-20 (enamelysin). Our goals are: ( project #1) to identify the nature of the interactions which define protein self-assembly in solution and the nanosphere matrix architecture, at the molecular level, to define at the molecular level the ultrastructural architecture of amelogenin-based matrices formed in vitro, to characterize apatite and octacalcium phosphate crystal growth, morphology and orientation within synthetic amelogenin gel matrices in the absence and presence of the non-amelogenins. To characterize the effects of amelogenin and non-amelogenins on apatite and octacalcium crystal growth morphology in solution. (project # 2) : To investigate the action of recombinant MMP-20 on recombinant enamel proteins amelogenin, ameloblastin and enamelin.

该子项目是利用该技术的众多研究子项目之一 资源由 NIH/NCRR 资助的中心拨款提供。子项目和 研究者 (PI) 可能已从 NIH 的另一个来源获得主要资金， 因此可以在其他 CRISP 条目中表示。列出的机构是 对于中心来说，它不一定是研究者的机构。 我们研究活动的主要目标是增进我们对牙釉质形成所涉及的基本分子机制的理解。我们假设这种理解将导致未来用于创建牙釉质矿物材料的仿生策略的发展。我们重点研究两个领域：1.牙釉质细胞外基质成分的结构和功能。 2）牙釉质蛋白酶MMP-20（牙釉素）的功能和作用机制。我们的目标是：（项目#1）在分子水平上确定溶液中蛋白质自组装和纳米球基质结构的相互作用的性质，在分子水平上定义形成的基于牙釉蛋白的基质的超微结构在体外，表征在不存在和存在非牙釉蛋白的情况下合成牙釉蛋白凝胶基质中磷灰石和磷酸八钙晶体的生长、形态和取向。表征牙釉蛋白和非牙釉蛋白对溶液中磷灰石和八钙晶体生长形态的影响。 （项目#2）：研究重组MMP-20对重组釉质蛋白釉原蛋白、成釉素和釉质蛋白的作用。