Tratsiak_2019_Acta.Crystallogr.F.Struct.Biol.Commun_75_324

Reference

Title : Crystal structure of the cold-adapted haloalkane dehalogenase DpcA from Psychrobacter cryohalolentis K5 - Tratsiak_2019_Acta.Crystallogr.F.Struct.Biol.Commun_75_324
Author(s) : Tratsiak K , Prudnikova T , Drienovska I , Damborsky J , Brynda J , Pachl P , Kuty M , Chaloupkova R , Rezacova P , Kuta Smatanova I
Ref : Acta Crystallographica F Struct Biol Commun , 75 :324 , 2019
Abstract :

Haloalkane dehalogenases (HLDs) convert halogenated aliphatic pollutants to less toxic compounds by a hydrolytic mechanism. Owing to their broad substrate specificity and high enantioselectivity, haloalkane dehalogenases can function as biosensors to detect toxic compounds in the environment or can be used for the production of optically pure compounds. Here, the structural analysis of the haloalkane dehalogenase DpcA isolated from the psychrophilic bacterium Psychrobacter cryohalolentis K5 is presented at the atomic resolution of 1.05 A. This enzyme exhibits a low temperature optimum, making it attractive for environmental applications such as biosensing at the subsurface environment, where the temperature typically does not exceed 25 degrees C. The structure revealed that DpcA possesses the shortest access tunnel and one of the most widely open main tunnels among structural homologs of the HLD-I subfamily. Comparative analysis revealed major differences in the region of the alpha4 helix of the cap domain, which is one of the key determinants of the anatomy of the tunnels. The crystal structure of DpcA will contribute to better understanding of the structure-function relationships of cold-adapted enzymes.

PubMedSearch : Tratsiak_2019_Acta.Crystallogr.F.Struct.Biol.Commun_75_324
PubMedID: 31045561
Gene_locus related to this paper: psyck-q1qbb9

Related information

Gene_locus psyck-q1qbb9
Structure psyck-q1qbb9    6F9O

Citations formats

Tratsiak K, Prudnikova T, Drienovska I, Damborsky J, Brynda J, Pachl P, Kuty M, Chaloupkova R, Rezacova P, Kuta Smatanova I (2019)
Crystal structure of the cold-adapted haloalkane dehalogenase DpcA from Psychrobacter cryohalolentis K5
Acta Crystallographica F Struct Biol Commun 75 :324

Tratsiak K, Prudnikova T, Drienovska I, Damborsky J, Brynda J, Pachl P, Kuty M, Chaloupkova R, Rezacova P, Kuta Smatanova I (2019)
Acta Crystallographica F Struct Biol Commun 75 :324