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Umbrella sampling and double decoupling data for methanol binding to Candida antarctica lipase B.

ABSTRACT: The binding free-energy profile of methanol to Candida antarctica lipase B (CALB) was calculated at infinite dilution and at a finite methanol concentration of 6.1 M using umbrella sampling molecular dynamics simulations with the OPLS all-atom force field. An additional validation of the results was performed by employing alchemical double decoupling simulations. The binding free-energy profiles have been used in a related research article to validate free-energy profiles obtained from direct counting simulations with the aim to use the kinetic information encoded in the latter. The data provided in this work will be useful to study concentration effects on binding, to test alternative free energy methods or to use the proposed simulation protocol for related systems.

SUBMITTER: Markthaler D

PROVIDER: S-EPMC8633857 | biostudies-literature | 2021 Dec

REPOSITORIES: biostudies-literature

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Umbrella sampling and double decoupling data for methanol binding to <i>Candida antarctica</i> lipase B.

Markthaler Daniel D Hansen Niels N

Data in brief 20211122

The binding free-energy profile of methanol to <i>Candida antarctica</i> lipase B (CALB) was calculated at infinite dilution and at a finite methanol concentration of 6.1 M using umbrella sampling molecular dynamics simulations with the OPLS all-atom force field. An additional validation of the results was performed by employing alchemical double decoupling simulations. The binding free-energy profiles have been used in a related research article to validate free-energy profiles obtained from di ...[more]

PMID: 34877385

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Project description:BackgroundThe Lipase Engineering Database (LED) integrates information on sequence, structure and function of lipases, esterases and related proteins with the alpha/beta hydrolase fold. A new superfamily for Candida antarctica lipase A (CALA) was introduced including the recently published crystal structure of CALA. Since CALA has a highly divergent sequence in comparison to other alpha/beta hydrolases, the Lipase Engineering Database was used to classify CALA in the frame of the already established classification system. This involved the comparison of CALA to similar structures as well as sequence-based comparisons against the content of the LED.ResultsThe new release 3.0 (December 2009) of the Lipase Engineering Database contains 24783 sequence entries for 18585 proteins as well as 656 experimentally determined protein structures, including the structure of CALA. In comparison to the previous release 1 with 4322 protein and 167 structure entries this update represents a significant increase in data volume. By comparing CALA to representative structures from all superfamilies, a structure from the deacetylase superfamily was found to be most similar to the structure of CALA. While the alpha/beta hydrolase fold is conserved in both proteins, the major difference is found in the cap region. Sequence alignments between both proteins show a sequence similarity of only 15%. A multisequence alignment of both protein families was used to create hidden Markov models for the cap region of CALA and showed that the cap region of CALA is unique among all other proteins of the alpha/beta hydrolase fold. By specifically comparing the substrate binding pocket of CALA to other binding pockets of alpha/beta hydrolases, the binding pocket of Candida rugosa lipase was identified as being highly similar. This similarity also applied to the lid of Candida rugosa lipase in comparison to the potential lid of CALA.ConclusionThe LED serves as a valuable tool for the systematic analysis of single proteins or protein families. The updated release 3.0 was used for the evaluation of alpha/beta hydrolases. The HTML version of the database with new features is available at http://www.led.uni-stuttgart.de and provides sequences, structures and a set of analysis tools including phylogenetic trees and HMM profiles.

Dataset Information

Umbrella sampling and double decoupling data for methanol binding to Candida antarctica lipase B.

Publications

Umbrella sampling and double decoupling data for methanol binding to <i>Candida antarctica</i> lipase B.

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