| EC |
4.1.1.86 |
| Accepted name: |
diaminobutyrate decarboxylase |
| Reaction: |
L-2,4-diaminobutanoate = propane-1,3-diamine + CO2 |
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For diagram of ectoine biosynthesis, click here |
| Other name(s): |
DABA DC; L-2,4-diaminobutyrate decarboxylase; L-2,4-diaminobutanoate carboxy-lyase |
| Systematic name: |
L-2,4-diaminobutanoate carboxy-lyase (propane-1,3-diamine-forming) |
| Comments: |
A pyridoxal-phosphate protein that requires a divalent cation for activity [1]. N4-Acetyl-L-2,4-diaminobutanoate, 2,3-diaminopropanoate, ornithine and lysine are not substrates. Found in the proteobacteria Haemophilus influenzae and Acinetobacter baumannii. In the latter, this enzyme is cotranscribed with the dat gene that encodes EC 2.6.1.76, diaminobutyrate—2-oxoglutarate transaminase, which can supply the substrate for this enzyme. |
| Links to other databases: |
BRENDA, EXPASY, KEGG, MetaCyc, PDB |
| References: |
| 1. |
Yamamoto, S., Tsuzaki, Y., Tougou, K. and Shinoda, S. Purification and characterization of L-2,4-diaminobutyrate decarboxylase
from Acinetobacter calcoaceticus. J. Gen. Microbiol. 138 (1992) 1461–1465. [DOI] [PMID: 1512577] |
| 2. |
Ikai, H. and Yamamoto, S. Cloning and expression in Escherichia coli of the gene encoding a novel L-2,4-diaminobutyrate decarboxylase of Acinetobacter baumannii. FEMS Microbiol. Lett. 124 (1994) 225–228. [DOI] [PMID: 7813892] |
| 3. |
Ikai, H. and Yamamoto, S. Identification and analysis of a gene encoding L-2,4-diaminobutyrate:2-ketoglutarate 4-aminotransferase involved in the 1,3-diaminopropane production pathway in Acinetobacter baumannii. J. Bacteriol. 179 (1997) 5118–5125. [DOI] [PMID: 9260954] |
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| [EC 4.1.1.86 created 2006] |
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