ISDA: 7WKQ

Deposition Date 2022-01-10

Release Date 2022-02-23

Last Version Date 2023-11-29

Entry Detail

PDB ID:

7WKQ

Keywords:

BIOSYNTHETIC PROTEIN

Title:

Crystal Structure of halohydrin dehalogenase from Acidimicrobiia bacterium

Biological Source:

Source Organism:

Acidimicrobiia bacterium (Taxon ID: 2080302)

Host Organism:

Escherichia coli

Method Details:

Experimental Method:

X-RAY DIFFRACTION

Resolution:

2.89 Å

R-Value Free:

0.24

R-Value Work:

0.21

R-Value Observed:

0.22

Space Group:

P 21 21 21

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Macromolecular Entities

Polymer Type:polypeptide(L)
Molecule:halohydrin dehalogenase
Chain IDs:A, B, C, D
Chain Length:248
Number of Molecules:4
Biological Source:Acidimicrobiia bacterium

Ligand Molecules

Primary Citation

Identification and Structure Analysis of an Unusual Halohydrin Dehalogenase for Highly Chemo-, Regio- and Enantioselective Bio-Nitration of Epoxides.

Wang, H.H, Wan, N.W, Miao, R.P, He, C.L, Chen, Y.Z, Liu, Z.Q, Zheng, Y.G.Show

Angew.Chem.Int.Ed.Engl. 61 e202205790 e202205790 (2022)

PMID: 35856897 DOI: 10.1002/anie.202205790

Abstact

We report the discovery of an unusual halohydrin dehalogenase, HHDHamb, that can work under relatively low acidic conditions and extremely low temperatures for the bio-nitration of epoxides using nitrite as a nitrating agent. The bio-nitration strategy exhibits high chemo-, regio-, and enantioselectivity, catalyzing the kinetic resolution of various epoxides to enantiopure β-nitroalcohols with nitro-bearing stereocenters in up to 41 % isolated yield and >99 % enantiomeric excess (ee). Additionally, the bio-nitration method displays a high reaction efficiency and can be performed on a gram scale. We also solved the crystal structure of HHDHamb to understand the possible structural determinants of chemoselectivity control in the bio-nitration reaction.

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