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. 2023 Jun 14;14:3531. doi: 10.1038/s41467-023-39316-5

Fig. 6. The proposed function of the Dpa enzyme in A. baumannii.

Fig. 6

1,3-diamino propane (1,3-DAP) is synthesized from L-Aspartate (L-Asp) through L-aspartate 4-semialdehyde (ASA) and L-2,4-diaminobutanoate (DAB) intermediates, by a function of diaminobutyrate aminotransferase (Dat) and 2,4-diaminobutyrate decarboxylase (Ddc). Conserved and specific diaminopropane acetyltransferase (Dpa) acetylates and neutralizes 1,3-DAP which could be excreted. 1,3-DAP has been previously linked to surface-associated motility, while its acetylation by Dpa has the opposite effect limiting motility and increasing adherence.