Sangam: A Confluence of Knowledge Streams

Characterization of the Ornithine Hydroxylation Step in Albachelin Biosynthesis

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dc.contributor Biochemistry
dc.contributor Center for Drug Discovery
dc.creator Bufkin, Kendra
dc.creator Sobrado, Pablo
dc.date 2017-11-29T20:20:13Z
dc.date 2017-11-29T20:20:13Z
dc.date 2017-10-01
dc.date 2017-11-24T11:58:52Z
dc.date.accessioned 2023-03-01T18:51:16Z
dc.date.available 2023-03-01T18:51:16Z
dc.identifier Bufkin, K.; Sobrado, P. Characterization of the Ornithine Hydroxylation Step in Albachelin Biosynthesis. Molecules 2017, 22, 1652.
dc.identifier http://hdl.handle.net/10919/80565
dc.identifier https://doi.org/10.3390/molecules22101652
dc.identifier.uri http://localhost:8080/xmlui/handle/CUHPOERS/281493
dc.description <i>N</i>-Hydroxylating monooxygenases (NMOs) are involved in siderophore biosynthesis. Siderophores are high affinity iron chelators composed of catechol and hydroxamate functional groups that are synthesized and secreted by microorganisms and plants. Recently, a new siderophore named albachelin was isolated from a culture of <i>Amycolatopsis alba</i> growing under iron-limiting conditions. This work focuses on the expression, purification, and characterization of the NMO, abachelin monooxygenase (AMO) from <i>A. alba</i>. This enzyme was purified and characterized in its holo (FAD-bound) and apo (FAD-free) forms. The apo-AMO could be reconstituted by addition of free FAD. The two forms of AMO hydroxylate ornithine, while lysine increases oxidase activity but is not hydroxylated and display low affinity for NADPH.
dc.description Published version
dc.format application/pdf
dc.format application/pdf
dc.language en
dc.publisher MDPI
dc.rights Creative Commons Attribution 4.0 International
dc.rights http://creativecommons.org/licenses/by/4.0/
dc.subject flavin
dc.subject siderophores
dc.subject Amycolatopsis alba
dc.subject ornithine hydroxylase
dc.title Characterization of the Ornithine Hydroxylation Step in Albachelin Biosynthesis
dc.title Molecules
dc.type Article - Refereed
dc.type Text


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