Chrast_2019_Microorganisms_7_

Reference

Title : Deciphering the Structural Basis of High Thermostability of Dehalogenase from Psychrophilic Bacterium Marinobacter sp. ELB17 - Chrast_2019_Microorganisms_7_
Author(s) : Chrast L , Tratsiak K , Planas-Iglesias J , Daniel L , Prudnikova T , Brezovsky J , Bednar D , Kuta Smatanova I , Chaloupkova R , Damborsky J
Ref : Microorganisms , 7 : , 2019
Abstract :

Haloalkane dehalogenases are enzymes with a broad application potential in biocatalysis, bioremediation, biosensing and cell imaging. The new haloalkane dehalogenase DmxA originating from the psychrophilic bacterium Marinobacter sp. ELB17 surprisingly possesses the highest thermal stability (apparent melting temperature Tm,app = 65.9 degrees C) of all biochemically characterized wild type haloalkane dehalogenases belonging to subfamily II. The enzyme was successfully expressed and its crystal structure was solved at 1.45 A resolution. DmxA structure contains several features distinct from known members of haloalkane dehalogenase family: (i) a unique composition of catalytic residues; (ii) a dimeric state mediated by a disulfide bridge; and (iii) narrow tunnels connecting the enzyme active site with the surrounding solvent. The importance of narrow tunnels in such paradoxically high stability of DmxA enzyme was confirmed by computational protein design and mutagenesis experiments.

PubMedSearch : Chrast_2019_Microorganisms_7_
PubMedID: 31661858
Gene_locus related to this paper: 9alte-a3jb27

Related information

Gene_locus 9alte-a3jb27
Structure 9alte-a3jb27    5MXP

Citations formats

Chrast L, Tratsiak K, Planas-Iglesias J, Daniel L, Prudnikova T, Brezovsky J, Bednar D, Kuta Smatanova I, Chaloupkova R, Damborsky J (2019)
Deciphering the Structural Basis of High Thermostability of Dehalogenase from Psychrophilic Bacterium Marinobacter sp. ELB17
Microorganisms 7 :

Chrast L, Tratsiak K, Planas-Iglesias J, Daniel L, Prudnikova T, Brezovsky J, Bednar D, Kuta Smatanova I, Chaloupkova R, Damborsky J (2019)
Microorganisms 7 :