STRUCTURAL STUDIES OF RB SPHAEROIDES PHOTOSYNTHETIC REACTION CENTER

球状RB光合反应中心的结构研究

• 批准号: 6658708
• 负责人: DOUGLAS CHARLES REES
• 金额: $ 14.32万
• 依托单位: STANFORD UNIVERSITY
• 依托单位国家: 美国
• 财政年份: 2002
• 资助国家: 美国
• 起止时间: 2002-03-01 至 2003-02-28
• 项目状态: 已结题
• 来源: https://reporter.nih.gov/project-details/6658708
• 关键词: bioimaging /biomedical imaging; biomaterials; biomedical resource; plants; proteins; radiography; structural biology

Recognition of extracellular ligands by cell surface receptors (integrins) is critical for cell adhesion, migration and tracking and perhaps the metastatic spread of tumor cells. This recognition is mediated in part by an arginine-glycine-aspartic acid sequence in extracellular proteins. We have recently cloned and expressed larger multimodule fragments that each contain the module FN 11110. We have crystallized three of these fragments. These fragments are important structural candidates to reveal the 3D organization of the RGD site and synergistic sites in adjacent domains that are required for integrin recognition and adhesive function of the molecule. Synchrotron radiation is needed to collect heavy atom data from these small crystals.

细胞表面受体对细胞外配体的识别 （整合素）对于细胞粘附、迁移和追踪至关重要 也许是肿瘤细胞的转移性扩散。 这种认可是 部分由精氨酸-甘氨酸-天冬氨酸序列介导 细胞外蛋白。 我们最近克隆并表达了更大的 每个包含模块 FN 11110 的多模块片段。我们有 结晶了其中三个碎片。 这些片段很重要 揭示 RGD 站点 3D 组织的候选结构 以及相邻领域中所需的协同位点 分子的整合素识别和粘附功能。 需要同步加速器辐射来收集这些重原子数据 小晶体。