1nvt
Crystal structure of Shikimate Dehydrogenase (AROE or MJ1084) in complex with NADP+
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| , resolution 2.35Å | |||||||
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| Ligands: | , | ||||||
| Gene: | aroE (Methanocaldococcus jannaschii) | ||||||
| Activity: | Shikimate dehydrogenase, with EC number 1.1.1.25 | ||||||
| Domains: | AroE, Shikimate_DH, Shikimate_dh_N | ||||||
| Resources: | FirstGlance, OCA, PDBsum, JenaLib, RCSB | ||||||
| Coordinates: | save as pdb, mmCIF, xml | ||||||
OverviewOverview
The crystal structure of Methanococcus jannaschii shikimate 5-dehydrogenase (MjSDH) bound to the cofactor nicotinamide adenine dinucleotide phosphate (NADP) has been determined at 2.35 A resolution. Shikimate 5-dehydrogenase (SDH) is responsible for NADP-dependent catalysis of the fourth step in shikimate biosynthesis, which is essential for aromatic amino acid metabolism in bacteria, microbial eukaryotes, and plants. The structure of MjSDH is a compact alpha/beta sandwich with two distinct domains, responsible for binding substrate and the NADP cofactor, respectively. A phylogenetically conserved deep cleft on the protein surface corresponds to the enzyme active site. The structure reveals a topologically new domain fold within the N-terminal segment of the polypeptide chain, which binds substrate and supports dimerization. Insights gained from homology modeling and sequence/structure comparisons suggest that the SDHs represent a unique class of dehydrogenases. The structure provides a framework for further investigation to discover and develop novel inhibitors targeting this essential enzyme.
About this StructureAbout this Structure
1NVT is a Single protein structure of sequence from Methanocaldococcus jannaschii. Full crystallographic information is available from OCA.
ReferenceReference
Crystal structure of shikimate 5-dehydrogenase (SDH) bound to NADP: insights into function and evolution., Padyana AK, Burley SK, Structure. 2003 Aug;11(8):1005-13. PMID:12906831
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