温度对pH压力大豆 (Glycine max) 凝聚素结构配置和免疫活性的影响
Chunya Tang1, Xingyi Jiang1, Changqi Liu2
1Department of Health, Nutrition, and Food Sciences, Florida State University, Tallahassee, FL, USA.
Food chemistry
|January 14, 2024
概括
大豆聚合素 (SBA) 的稳定性随着pH值而变化,在pH值3.0时温度稳定性最低,在pH值8.5时最高. 温度诱导的结构变化会影响SBA的免疫活性,并降低血凝活动.
科学领域:
- 生物化学 生物化学
- 蛋白质化学 蛋白质化学
- 免疫学 免疫学 免疫学
背景情况:
- 大豆聚合素 (SBA) 是一种在诊断和治疗方面具有潜在应用的莱克.
- 了解SBA在不同条件下的结构和功能特性对于其有效利用至关重要.
研究的目的:
- 研究pH值和温度对纯化大豆聚合素 (SBA) 的物理性质,结构配置和免疫活性的影响.
- 为了确定热引起的结构变化,聚合和SBA的血凝活动之间的关系.
主要方法:
- 通过硫酸沉和液态染色学净化SBA.
- 使用循环二极化,凝电泳和光谱学,对SBA结构和物理性质 (粒子大小, ζ-电位,聚合温度) 的表征.
- 使用ELISA和用抗SBA单克隆抗体进行免疫血栓的免疫活性评估.
- 通过血液凝结试验测量血液凝结活性.
主要成果:
- 在pH 3.0时,SBA表现出最低的热稳定性,在pH 8.5时显示出最高的热稳定性.
- 在pH压力SBA中,温度诱导的结构变化改变了其免疫活性.
- 溶性SBA的热诱导聚合 (70和80°C) 与血液凝结活性降低相关.
结论:
- 该研究阐明了SBA的pH依赖性热稳定性及其易受热引起的结构变化.
- 在SBA结构的变化显著影响其免疫活性和生物功能 (血液凝结).
- 结果为处理和在各种生物技术环境中应用SBA提供了关键的见解.
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