结合葡萄糖的二二色乳素 (DBL):净化,表征,结构分析和抗菌特性
Willian F Reis1, Marcos E S Silva2,3, Ana C S Gondim4
1Departamento de Ciências da Natureza E da Terra, Universidade Do Estado de Minas Gerais, Unidade de Divinópolis, Divinópolis, MG, Brazil.
The protein journal
|April 14, 2024
概括
来自Dioclea bicolor种子 (DBL) 的乳清素显示出抗菌性质,并抑制生物膜的形成. DBL与安培西林和四环素等抗生素协同工作,提供潜在的治疗应用.
科学领域:
- 生物化学 生物化学
- 分子生物学分子生物学
- 微生物学 微生物学
背景情况:
- 乳清素是以碳水化合物结合而闻名的蛋白质.
- 植物衍生性莱克具有多样化的生物活性.
- 迪奥克莱亚双色色素 (Dioclea bicolor lectin,简称DBL) 是一种具有潜在应用的新型色素.
研究的目的:
- 为了净化和表征Dioclea双色素学菌素 (DBL).
- 研究DBL的抗微生物和抗菌膜特性.
- 探索DBL与抗生素的协同作用.
主要方法:
- 用于DBL隔离和子单元分析的亲和性净化和电泳.
- 凝过色谱用于原生分子质量测定.
- 血液凝结试验,氨基酸测序,循环二重化和蛋白质结构预测.
- 分子对接以分析连接体相互作用.
- 抗菌活性测试 (MIC),协同效应测试,生物膜抑制测试和细胞毒性测试.
主要成果:
- DBL被净化为一个具有α,β和γ子单元 (29,14,12 kDa) 的四聚合物.
- DBL表现出抗菌活性 (MIC 125μg/mL) 并抑制生物膜的形成.
- DBL与安培和四环素具有协同作用,在小鼠纤维细胞中没有毒性.
- 结构分析显示了β-叶子二次结构和β-三明治单体结构.
结论:
- DBL具有显著的抗微生物和抗菌膜活动.
- DBL通过协同作用来增强传统抗生素的疗效.
- DBL是开发新型抗菌疗法的有希望的候选者.
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