Deoxyhypusine hydroxylase

Definition:

Catalyzes the hydroxylation of the N(6)-(4-aminobutyl)-L-lysine intermediate produced by deoxyhypusine synthase/DHPS on a critical lysine of the eukaryotic translation initiation factor 5A/eIF-5A. This is the second step of the post-translational modification of that lysine into an unusual amino acid residue named hypusine. Hypusination is unique to mature eIF-5A factor and is essential for its function (By similarity).

References:

[1]. Van V Vu, et al. Human deoxyhypusine hydroxylase, an enzyme involved in regulating cell growth, activates O2 with a nonheme diiron center. Proc Natl Acad Sci U S A. 2009 Sep 1;106(35):14814-9. [Content Brief]

[2]. Jong-Hwan Park, et al. Molecular cloning, expression, and structural prediction of deoxyhypusine hydroxylase: a HEAT-repeat-containing metalloenzyme. Proc Natl Acad Sci U S A. 2006 Jan 3;103(1):51-6. [Content Brief]

[3]. Yeon Sook Kim, et al. Deoxyhypusine hydroxylase is a Fe(II)-dependent, HEAT-repeat enzyme. Identification of amino acid residues critical for Fe(II) binding and catalysis [corrected]. J Biol Chem. 2006 May 12;281(19):13217-13225. [Content Brief]

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