J 2000

Crystal structure of the haloalkane dehalogenase from Sphingomonas paucimobilis UT26

MAREK, Jaromír, Jitka VÉVODOVÁ, Ivana KUTÁ-SMATANOVÁ, Y. NAGATA, L.A. SVENSSON et. al.

Basic information

Original name

Crystal structure of the haloalkane dehalogenase from Sphingomonas paucimobilis UT26

Authors

MAREK, Jaromír (203 Czech Republic, guarantor), Jitka VÉVODOVÁ (203 Czech Republic, belonging to the institution), Ivana KUTÁ-SMATANOVÁ (203 Czech Republic), Y. NAGATA, L.A. SVENSSON, J. NEWMAN, M. TAKAGI and Jiří DAMBORSKÝ (203 Czech Republic)

Edition

Biochemistry, Washington, DC, USA, American Chemical Society, 2000, 0006-2960

Other information

Language

English

Type of outcome

Článek v odborném periodiku

Field of Study

10600 1.6 Biological sciences

Country of publisher

United States of America

Confidentiality degree

není předmětem státního či obchodního tajemství

References:

Impact factor

Impact factor: 4.221

RIV identification code

RIV/00216224:14310/00:00002430

Organization unit

Faculty of Science

UT WoS

000165355700009

Keywords in English

Crystal structure; haloalkane dehalogenase
Změněno: 2/5/2012 13:00, doc. RNDr. Jaromír Marek, Ph.D.

Abstract

V originále

The haloalkane dehalogenase from Sphingomonas paucimobilis UT26 (LinB) is the enzyme involved in the degradation ofthe important environmental pollutant g-hexachlorocyclohexane. The enzyme hydrolyzes a broad range of halogenated cyclic and aliphatic compounds. Here, we present the 1.58 A crystal structure of LinB and the 2.0 A structure of LinB with 1,3-propanediol, a product of debromination of 1,3-dibromopropane, in the active site of the enzyme. The enzyme belongs to the a/b-hydrolase family and contains a catalytic triad (Aspl08, His272, and Glu132) in the lipase-like topological arrangement previously proposed from mutagenesis experiments. The LinB structure was compared with the structures of haloalkane dehalogenase from Xanthobacter autotrophicus GJl0 and from Rhodococcus sp. and the structural features involved in the adaptation toward xenobiotic substrates were identified. The arrangement and composition of the a-helices in the cap domain results in the dif ferences in the size and shape of the active-site cavity and the entrance tunnel. This is the major determinant ofthe substrate specificity ofthis haloalkane dehalogenase.

Links

MSM 143100005, plan (intention)
Name: Strukturně-funkční vztahy biomolekul a jejich role v metabolismu
Investor: Ministry of Education, Youth and Sports of the CR, Biomolecular Structure-function Relationships and their role in the Metabolism