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.
La Gioia F., Rizzotti L., Rossi F., Gardini F., Tabanelli G., Torriani S. (2011). Identification of a Tyrosine Decarboxylase Gene (tdcA) in Streptococcus thermophilus 1TT45 and Analysis of Its Expression and Tyramine Production in Milk. APPLIED AND ENVIRONMENTAL MICROBIOLOGY, 77, 1140-1144 [10.1128/AEM.01928-10].
Identification of a Tyrosine Decarboxylase Gene (tdcA) in Streptococcus thermophilus 1TT45 and Analysis of Its Expression and Tyramine Production in Milk.
GARDINI, FAUSTO;TABANELLI, GIULIA;
2011
Abstract
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.I documenti in IRIS sono protetti da copyright e tutti i diritti sono riservati, salvo diversa indicazione.
