FIG. 1.

Schematic representation of arginine metabolism in L. lactis. Genes encode enzymes as follows: argB, N-acetylglutamate 5-phosphotransferase; argC, N-acetylglutamate 5-semialdehyde dehydrogenase; argD, N²-acetylornithine 5-aminotransferase; argJ, ornithine acetyltransferase; argE, acetylornithine acetyltransferase; argF, ornithine carbamoyltransferase; argG, argininosuccinate synthetase; argH, argininosuccinase; arcA, arginine deiminase; arcB, ornithine carbamoyltransferase; arcC, carbamate kinase; gltS, arginine or glutamate transporter.