si_0854 Ectoine_biosynthesis_and_regulation Aspartokinase (EC 2.7.2.4) associated with ectoine biosynthesis si_0854 Ectoine_biosynthesis_and_regulation L-2,4-diaminobutyric acid acetyltransferase (EC 2.3.1.-) si_0854 Ectoine_biosynthesis_and_regulation Diaminobutyrate-pyruvate aminotransferase (EC 2.6.1.46) si_0854 Ectoine_biosynthesis_and_regulation L-ectoine synthase (EC 4.2.1.-) si_0854 Ectoine_biosynthesis_and_regulation Ectoine hydroxylase (EC 1.17.-.-) si_0854 Ectoine_biosynthesis_and_regulation Putative regulatory protein associated with the ectoine operon