2 AMINO-ACID AMIDOHYDROLASE GENES ENCODING L-STEREOSPECIFIC CARBAMOYLASE AND AMINOACYLASE ARE ORGANIZED IN A COMMON OPERON IN BACILLUS-STEAROTHERMOPHILUS
N. Batisse et al., 2 AMINO-ACID AMIDOHYDROLASE GENES ENCODING L-STEREOSPECIFIC CARBAMOYLASE AND AMINOACYLASE ARE ORGANIZED IN A COMMON OPERON IN BACILLUS-STEAROTHERMOPHILUS, Applied and environmental microbiology, 63(2), 1997, pp. 763-766
The L-carbamoylase gene (amaB) upstream of the previously detected L-a
minoacylase gene (amaA) in the Bacillus stearothermophilus NCIB8224 st
rain was identified in this study. The amaB and amaA genes are cotrans
cribed as a single mRNA from the same transcriptional start. The two-a
ma-gene operon is conserved in B. stearothermophilus strains. A cross-
activity of L-carbamoylase towards respective substrates for L-aminoac
ylase supports the hypothesis of a common ancestor for both amino acid
amidohydrolase genes.