2zgd | pdb_00002zgd

Asn-hydroxylation stabilises the ankyrin repeat domain fold

spinqualitylabelsall models 2zgd, resolution 1.90Å Show:Asymmetric Unit Biological Assembly Drag the structure with the mouse to rotate   Export Animated Image   Print3D Structural highlights 2zgd is a 1 chain structure. Full crystallographic information is available from OCA. For a guided tour on the structure components use FirstGlance. Ligands: CD, CL NonStd Res: AHB Related: 2zgg Resources: FirstGlance, OCA, PDBe, RCSB, PDBsum, ProSAT Evolutionary Conservation Check, as determined by ConSurfDB. You may read the explanation of the method and the full data available from ConSurf. Publication Abstract from PubMed Ankyrin repeats (ARs) are one of the most common structural motifs among eukaryotic proteins. Recent analyses have shown that factor inhibiting hypoxia-inducible factor (FIH) catalyses the hydroxylation of highly conserved Asn-residues within ankyrin repeat domains (ARDs). However, the effect of Asn-hydroxylation on ARD structure is unknown. Supporting the proposal that FIH-mediated ARD hydroxylation is ubiquitous we report that consensus ARD proteins are FIH substrates both in vitro and in vivo. X-ray diffraction analyses revealed that hydroxylation does not alter the archetypical ARD conformation in the crystalline state. However, other biophysical analyses revealed that hydroxylation significantly stabilizes the ARD fold in solution. We propose that intracellular protein hydroxylation is much more common than previously thought and that one of its roles is stabilization of localized regions of ARD folds. Asparagine beta-hydroxylation stabilizes the ankyrin repeat domain fold.,Kelly L, McDonough MA, Coleman ML, Ratcliffe PJ, Schofield CJ Mol Biosyst. 2009 Jan;5(1):52-8. Epub 2008 Oct 29. PMID:19081931 From MEDLINE®/PubMed®, a database of the U.S. National Library of Medicine.

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