title: Comparison of the substrate selectivity and biochemical properties of human and bacterial γ-butyrobetaine hydroxylase.
abstract: 2-Oxoglutarate and iron dependent oxygenases have potential for the stereoselective hydroxylation of amino acids and related compounds. The biochemical and kinetic properties of recombinant γ-butyrobetaine hydroxylase from human and Pseudomonas sp. AK1 were compared. The results reveal differences between the two BBOXs, including in their stimulation by ascorbate. Despite their closely related sequences, the two enzymes also display different substrate selectivities, including for the production of (di)hydroxylated betaines, implying use of engineered BBOXs for biocatalytic purposes may be productive.
authors.affiliation: Department of Chemistry, University of Oxford, Chemistry Research Laboratory, 12 Mansfield Road, Oxford OX1 3TA, United Kingdom. christopher.schofield@chem.ox.ac.uk.
authors.forename: Anna M
authors.initials: AM
authors.lastname: Rydzik
authors.forename: Ivanhoe K H
authors.initials: IK
authors.lastname: Leung
authors.forename: Grazyna T
authors.initials: GT
authors.lastname: Kochan
authors.forename: Nikita D
authors.initials: ND
authors.lastname: Loik
authors.forename: Luc
authors.initials: L
authors.lastname: Henry
authors.forename: Michael A
authors.initials: MA
authors.lastname: McDonough
authors.forename: Timothy D W
authors.initials: TD
authors.lastname: Claridge
authors.forename: Christopher J
authors.initials: CJ
authors.lastname: Schofield
mesh_terms: D055162:Biocatalysis; D006801:Humans; D008958:Models, Molecular; D015394:Molecular Structure; D011549:Pseudomonas / Q000201:enzymology*; D013379:Substrate Specificity; D050563:gamma-Butyrobetaine Dioxygenase / Q000737:chemistry / Q000378:metabolism*
chemical_list: D050563:gamma-Butyrobetaine Dioxygenase