Diaminovalerate

Dlaminourea, AA37 a,v-Diaminovaleric acid, AFOO Diamylamine, AS80... 

D-ornithine/(2, 45) -2,4-diaminovaleric acid D-(a)-lysine/2,5-diaminohexanoic acid ... 

The enzyme utilizes pyridoxamine phosphate (PMP) to transaminate the substrate carbonyl group to form 4,5-diaminovalerate plus bound PEP. A second trans-... 

In plants, algae, cyanobacteria and some other bacterial species 5-aminolevulinate (ALA) is synthesized from glutamate (1-6). This reaction sequence involves ligation of glutamate to a tRNA species and subsequent reduction to glutamate-l-semialdehyde (GSA) (7). The conversion of GSA to ALA is then catalysed by GSA-aminotransferase (E.C. S.4.3.8.) (2,8). Dependent on the requirement of pyridoxamine-phosphate (PAMP) or pyridoxal-phosphate (PALP) for activity, either 4,5-diaminovalerate (8-10) or 4,5-dioxovalerate (DOVA) (5,11,12) are proposed as intermediates. 

Ornithine mutase D-Ornithine NHj D-f/zreo-2,4-Diaminovaleric acid... 

A common basic amino acid is the lower homologue of lysine, L-ornithine (L-2,5-diaminovaleric acid, 2-41), which is an intermediate in the biosynthesis of arginine and an important amino acid of the ornithine (urea) cycle, which has the function of converting toxic ammonia into less toxic urea in mammals. Ornithine formed in dough through the action of yeast Sac-charomyces cerevisiae) is the main precursor of the typical aroma of bread crust, for which 2-acetyl-l-pyrroline together with 6-acetyl-l,2,3,4-tetrahydropyridine and its isomer 6-acetyl-2,3,4,5-tetrahydropyridine are responsible (see Section 8.2.12.4.1). 

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