4.2.1.108 (2S)-4-acetamido-2-aminobutanoate - 4.2.1.108 N4-acetyl-L-2,4-diaminobutyrate - 4.2.1.108 N4-acetyl-L-2,4-diaminobutanoate an intramolecular condensation reaction 4.2.1.108 4-N-acetyl-L-2,4-diaminobutanoate final step in L-ectoine biosynthesis, L-ectoine acts as an osmoprotectant 4.2.1.108 4-N-acetyl-L-2,4-diaminobutanoate final step in L-ectoine biosynthesis, L-ectoine is the compatible solute in the cell 4.2.1.108 4-N-acetyl-L-2,4-diaminobutanoate final step in L-ectoine biosynthesis, pathway overview 4.2.1.108 4-N-acetyl-L-2,4-diaminobutanoate final step in L-ectoine biosynthesis, pathway overview, L-ectoine is the main compatible solute in the organism with a cytoplasmic concentration of 1-2 M 4.2.1.108 additional information phylogenetic analysis 4.2.1.108 additional information the enzyme is osmoregulated in response to medium salinity allowing the organism to live in environments with high concentration of osmolytes