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由Pyruvate Kinase M2诱导的蛋白质酸化抑制了死后肌肉中的肌纤维蛋白质降解

Chi Ren^1,2, Xubo Song¹, Yu Dong¹

¹Institute of Food Science and Technology, Chinese Academy of Agricultural Sciences/Key Laboratory of Agra-products Quality & Safety in Harvest, Storage, Transportation, Management and Control, Ministry of Agriculture and Rural Affairs, Beijing 100193, P. R. China.

Journal of agricultural and food chemistry

|September 30, 2023

概括

酸盐激酶M2 (PKM2) 增强肌纤维蛋白酸化,这是肉类软化的关键过程. 这种对温度敏感的PKM2活性抑制蛋白质降解,为改善肉质提供了洞察力.

科学领域:

生物化学生物化学
食品科学食品科学食品科学
酶学是一种酶学.

背景情况:

肌纤维蛋白降解会影响肉的柔软度.
蛋白质酸化是这个过程中的关键调节机制.
酸盐激酶M2 (PKM2),一种糖解酶,也作为蛋白质激酶起作用.

研究的目的:

调查PKM2诱导的酸化和肌纤维蛋白质降解之间的关系.
为了确定温度对PKM2酸化活性的影响.
阐明PKM2在肉类软化途径中的作用.

主要方法:

用PKM2在不同温度 (4,25和37°C) 上化肌纤维蛋白.
全球肌纤维蛋白酸化水平的测量.
评估PKM2治疗后的德斯和阿克丁降解.

主要成果:

PKM2显著增加了肌纤维细胞蛋白质酸化,以温度依赖的方式.
最佳的酸化和抑制蛋白质降解发生在37°C.
通过PKM2介导的德斯和阿克的酸化抑制了它们在37°C的降解.

结论:

肌纤维蛋白的PKM2催化酸化抑制了蛋白质的降解.
这表明了一种新的肉类软化途径,涉及糖溶性酶调节.
了解PKM2的作用可以为改善肉质的策略提供信息.

关键词:

肉类肉类肉类肉类肌纤维细胞蛋白质降解降解蛋白质的酸化是蛋白质的酸化.酸激酶是一种酸激酶.这是一种温柔,温柔的情感.

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