InChI=1S/C10H20N2O4/c1-7(11)8(12-10(15)16)5-3-2-4-6-9(13)14/h7-8,12H,2-6,11H2,1H3,(H,13,14)(H,15,16)/p-1/t7-,8+/m0/s1 |
OQNJZSIPDMTUAJ-JGVFFNPUSA-M |
C(CCCCC[C@H]([C@H](C)[NH3+])NC(=O)[O-])(=O)[O-] |
|
(7R,8S)-8-amino-7-(carboxyamino)nonanoate
|
UniProt
|
Sakaki K, Ohishi K, Shimizu T, Kobayashi I, Mori N, Matsuda K, Tomita T, Watanabe H, Tanaka K, Kuzuyama T, Nishiyama M (2020) A suicide enzyme catalyzes multiple reactions for biotin biosynthesis in cyanobacteria. Nature chemical biology 16, 415-422 (Source: SUBMITTER) [PubMed:32042199] [show Abstract] In biotin biosynthesis, the conversion of pimeloyl intermediates to biotin is catalyzed by a universal set of four enzymes: BioF, BioA, BioD and BioB. We found that the gene homologous to bioA, the product of which is involved in the conversion of 8-amino-7-oxononanoate (AON) to 7,8-diaminononanoate (DAN), is missing in the genome of the cyanobacterium Synechocystis sp. PCC 6803. We provide structural and biochemical evidence showing that a novel dehydrogenase, BioU, is involved in biotin biosynthesis and functionally replaces BioA. This enzyme catalyzes three reactions: formation of covalent linkage with AON to yield a BioU-DAN conjugate at the ε-amino group of Lys124 of BioU using NAD(P)H, carboxylation of the conjugate to form BioU-DAN-carbamic acid, and release of DAN-carbamic acid using NAD(P)+. In this biosynthetic pathway, BioU is a suicide enzyme that loses the Lys124 amino group after a single round of reaction. |
|