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来自软体动物的两种新型T合成酶的分子克隆,特征和分子建模

Marilica Zemkollari¹, Chris Oostenbrink², Reingard Grabherr³

¹Department of Chemistry, University of Natural Resources and Life Sciences, Muthgasse 18, 1190 Vienna, Austria.

|February 17, 2024

概括

甘氨酸蛋白-N-乙银胺β1,3-银酸转移酶 (T-合成酶) 对于T-抗原合成至关重要. 在牛和等软体动物中特征T-合成酶揭示了独特的结构洞察力,有助于理解它们的生物作用.

科学领域:

生物化学生物化学
葡萄糖生物学葡萄糖生物学
酶学是一种酶学.

背景情况:

T-合成酶 (EC 2.4.1.122) 合成核心1O-甘氨酸T抗原,对动物发育和免疫是至关重要的.
软体动物扮演着不同的生态角色,了解它们的糖化是适应的关键.
像T-合成酶这样的新型碳水化合物活性酶为软体动物生物学提供了洞察力.

研究的目的:

识别,克隆,表达和表征来自Pomacea canaliculata (牛) 和Crassostrea gigas () 的T-合成酶.
为了阐明这些软体动物T合成酶的结构和生化特性.
研究保存和分离的结构特征的功能意义.

主要方法:

来自P. canaliculata和C. gigas的T合成酶的基因鉴定和克隆.
重组酶的异质表达和净化.
生物化学测试以确定酶活性和运动参数.
结构分析侧重于保存的图案.

主要成果:

无论是P. canaliculata还是C. gigas的T合成酶都表现出核心1β1,3-银酸转移酶活性.
酶显示的生物化学参数与已知的T-合成酶相似.
C. gigas T-synthase与已知的正体相具有相同的结构特征.
P. canaliculata T-synthase 缺乏之前认为重要的 CCSD 共识序列.

结论:

这项研究描述了来自关键软体动物物种的新型T合成酶.
这些发现突显了T-合成酶的结构多样性,特别是P. canaliculata.中没有CCSD动机.
这项研究促进了对软体动物O-糖化和酶进化的理解.

关键词:

3 - galaktoxyl转移酶的使用情况这是一种O-糖基化.这就是T-合成酶.葡萄糖生物学葡萄糖生物学软体动物软体动物这就是β-1β-1的特征.

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