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.
Identification of a Tyrosine Decarboxylase Gene (tdcA) in Streptococcus thermophilus 1TT45 and Analysis of Its Expression and Tyramine Production in Milk / La Gioia F.; Rizzotti L.; Rossi F.;Gardini F.; Tabanelli G.; Torriani S.. - In: APPLIED AND ENVIRONMENTAL MICROBIOLOGY. - ISSN 0099-2240. - STAMPA. - 77:(2011), pp. 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.
