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Identification of a Tyrosine Decarboxylase Gene (tdcA) in Streptococcus thermophilus 1TT45 and Analysis of Its Expression and Tyramine Production in Milk

机译:嗜热链球菌1TT45中酪氨酸脱羧酶基因(tdcA)的鉴定及其在牛奶中的表达和酪胺生成分析

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摘要

In this study, a tyrosine decarboxylase gene ( tdcA ) was identified in 1 among 83 Streptococcus thermophilus strains tested. Its sequence, nearly identical to that of a tdcA of Lactobacillus curvatus , indicated a horizontal gene transfer event. Transcription in milk and the formation of critical levels of tyramine were observed in the presence of tyrosine.
机译:在这项研究中,在83株嗜热链球菌菌株中的1株中鉴定了酪氨酸脱羧酶基因(tdcA)。它的序列与弯曲乳杆菌tdcA的序列几乎相同,表明发生了水平基因转移事件。在酪氨酸存在下观察到牛奶中的转录和临界水平的酪胺的形成。

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