Defluorination Capability of l-2-Haloacid Dehalogenases in the HAD-Like Hydrolase Superfamily Correlates with Active Site Compactness
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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Yn: ChemBioChem, Cyfrol 23, Rhif 1, e202100414, 05.01.2022.
Allbwn ymchwil: Cyfraniad at gyfnodolyn › Erthygl › adolygiad gan gymheiriaid
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T1 - Defluorination Capability of l-2-Haloacid Dehalogenases in the HAD-Like Hydrolase Superfamily Correlates with Active Site Compactness
AU - Chan, Peter W Y
AU - Chakrabarti, Nilmadhab
AU - Ing, Chris
AU - Halgas, Ondrej
AU - To, Terence K W
AU - Wälti, Marielle
AU - Petit, Alain-Pierre
AU - Tran, Christopher
AU - Savchenko, Alexei
AU - Yakunin, Alexander F
AU - Edwards, Elizabeth A
AU - Pomès, Régis
AU - Pai, Emil F
N1 - © 2021 Wiley-VCH GmbH.
PY - 2022/1/5
Y1 - 2022/1/5
N2 - l-2-Haloacid dehalogenases, industrially and environmentally important enzymes that catalyse cleavage of the carbon-halogen bond in S-2-halocarboxylic acids, were known to hydrolyse chlorinated, brominated and iodinated substrates but no activity towards fluorinated compounds had been reported. A screen for novel dehalogenase activities revealed four l-2-haloacid dehalogenases capable of defluorination. We now report crystal structures for two of these enzymes, Bpro0530 and Rha0230, as well as for the related proteins PA0810 and RSc1362, which hydrolyse chloroacetate but not fluoroacetate, all at ∼2.2 Å resolution. Overall structure and active sites of these enzymes are highly similar. In molecular dynamics (MD) calculations, only the defluorinating enzymes sample more compact conformations, which in turn allow more effective interactions with the small fluorine atom. Structural constraints, based on X-ray structures and MD calculations, correctly predict the defluorination activity of the homologous enzyme ST2570.
AB - l-2-Haloacid dehalogenases, industrially and environmentally important enzymes that catalyse cleavage of the carbon-halogen bond in S-2-halocarboxylic acids, were known to hydrolyse chlorinated, brominated and iodinated substrates but no activity towards fluorinated compounds had been reported. A screen for novel dehalogenase activities revealed four l-2-haloacid dehalogenases capable of defluorination. We now report crystal structures for two of these enzymes, Bpro0530 and Rha0230, as well as for the related proteins PA0810 and RSc1362, which hydrolyse chloroacetate but not fluoroacetate, all at ∼2.2 Å resolution. Overall structure and active sites of these enzymes are highly similar. In molecular dynamics (MD) calculations, only the defluorinating enzymes sample more compact conformations, which in turn allow more effective interactions with the small fluorine atom. Structural constraints, based on X-ray structures and MD calculations, correctly predict the defluorination activity of the homologous enzyme ST2570.
KW - Amino Acid Sequence
KW - Crystallography, X-Ray
KW - Halogenation
KW - Hydrolases/chemistry
KW - Molecular Dynamics Simulation
KW - Protein Conformation
KW - Sequence Alignment
U2 - 10.1002/cbic.202100414
DO - 10.1002/cbic.202100414
M3 - Article
C2 - 34643018
VL - 23
JO - ChemBioChem
JF - ChemBioChem
SN - 1439-7633
IS - 1
M1 - e202100414
ER -