5GWS

4-hydroxyisoleucine dehydrogenase complexed with NADH and succinate


Experimental Data Snapshot

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.218 

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Ligand Structure Quality Assessment 


This is version 1.1 of the entry. See complete history


Literature

Engineering a short-chain dehydrogenase/reductase for the stereoselective production of (2S,3R,4S)-4-hydroxyisoleucine with three asymmetric centers.

Shi, X.Miyakawa, T.Nakamura, A.Hou, F.Hibi, M.Ogawa, J.Kwon, Y.Tanokura, M.

(2017) Sci Rep 7: 13703-13703

  • DOI: 10.1038/s41598-017-13978-w
  • Primary Citation of Related Structures:  
    5GWR, 5GWT, 5GWS

  • PubMed Abstract: 
  • Fenugreek is a dietary supplement for anti-aging and human health. (2S,3R,4S)-4-hydroxyisoleucine (4-HIL), which is extracted from fenugreek seeds, is expected to be a promising orally active drug for diabetes and diabetic nephropathy because of its insulinotropic effect ...

    Fenugreek is a dietary supplement for anti-aging and human health. (2S,3R,4S)-4-hydroxyisoleucine (4-HIL), which is extracted from fenugreek seeds, is expected to be a promising orally active drug for diabetes and diabetic nephropathy because of its insulinotropic effect. Although several chemical synthesis methods of 4-HIL have been proposed, these methods require multistep reactions to control the stereochemistry of 4-HIL. In this study, we modified the key enzyme 4-HIL dehydrogenase (HILDH) to overcome the biggest limitation in commercial-scale production of 4-HIL. As a result, an effective one-step carbonyl reduction to produce (2S,3R,4S)-4-HIL was successfully accomplished with strict stereoselectivity (>99% de). Mass production of (2S,3R,4S)-4-HIL by our synthetic method could have a significant contribution to the prevention of diabetes, dyslipidemia, and Alzheimer's disease. (120 words/200 words).


    Organizational Affiliation

    Laboratory of Basic Science on Healthy Longevity, Department of Applied Biological Chemistry, Graduate School of Agricultural and Life Sciences, The University of Tokyo, 1-1-1 Yayoi, Bunkyo-ku, Tokyo, 113-8657, Japan. amtanok@mail.ecc.u-tokyo.ac.jp.



Macromolecules
Find similar proteins by:  (by identity cutoff)  |  Structure
Entity ID: 1
MoleculeChainsSequence LengthOrganismDetailsImage
4-hydroxyisolecuine dehydrogenaseA, B, C, D282Bacillus thuringiensisMutation(s): 0 
Gene Names: AC241_05390bacCBT246_12490F8517_20270GH882_21855
EC: 1
UniProt
Find proteins for A0A0K0Q8K4 (Bacillus thuringiensis)
Explore A0A0K0Q8K4 
Go to UniProtKB:  A0A0K0Q8K4
Protein Feature View
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  • Reference Sequence
Small Molecules
Experimental Data & Validation

Experimental Data

  • Method: X-RAY DIFFRACTION
  • Resolution: 2.35 Å
  • R-Value Free: 0.254 
  • R-Value Work: 0.216 
  • R-Value Observed: 0.218 
  • Space Group: H 3
Unit Cell:
Length ( Å )Angle ( ˚ )
a = 232.709α = 90
b = 232.709β = 90
c = 80.011γ = 120
Software Package:
Software NamePurpose
REFMACrefinement
HKL-2000data reduction
HKL-2000data scaling
MOLREPphasing

Structure Validation

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Ligand Structure Quality Assessment  



Entry History 

Deposition Data

Revision History  (Full details and data files)

  • Version 1.0: 2017-10-25
    Type: Initial release
  • Version 1.1: 2017-11-08
    Changes: Database references