Abstract：
:A novel computational Diels-Alderase design, based on a relatively rare form of carboxylesterase from Geobacillus stearothermophilus, is presented and theoretically evaluated. The structure was found by mining the PDB for a suitable oxyanion hole-containing structure, followed by a combinatorial approach to find suitable substrates and rational mutations. Four lead designs were selected and thoroughly modeled to obtain realistic estimates of substrate binding and prearrangement. Molecular dynamics simulations and DFT calculations were used to optimize and estimate binding affinity and activation energies. A large quantum chemical model was used to capture the salient interactions in the crucial transition state (TS). Our quantitative estimation of kinetic parameters was validated against four experimentally characterized Diels-Alderases with good results. The final designs in this work are predicted to have rate enhancements of ≈ 10(3)-10(6) and high predicted proficiencies. This work emphasizes the importance of considering protein dynamics in the design approach, and provides a quantitative estimate of the how the TS stabilization observed in most de novo and redesigned enzymes is decreased compared to a minimal, 'ideal' model. The presented design is highly interesting for further optimization and applications since it is based on a thermophilic enzyme (T (opt) = 70 °C).
journal_name
J Comput Aided Mol Desjournal_title
Journal of computer-aided molecular designauthors
Linder M,Johansson AJ,Olsson TS,Liebeschuetz J,Brinck Tdoi
10.1007/s10822-012-9601-ysubject
Has Abstractpub_date
2012-09-01 00:00:00pages
1079-95issue
9eissn
0920-654Xissn
1573-4951journal_volume
26pub_type
杂志文章abstract：:New methods for docking, template fitting and building pseudo-receptors are described. Full conformational searches are carried out for flexible cyclic and acyclic molecules. QXP (quick explore) search algorithms are derived from the method of Monte Carlo perturbation with energy minimization in Cartesian space. An ad...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1007907728892
更新日期：1997-07-01 00:00:00
abstract：:The process of compound selection and prioritization is crucial for both combinatorial chemistry (CBC) and high throughput screening (HTS). Compound libraries have to be screened for unwanted chemical structures, as well as for unwanted chemical properties. Property extrema can be eliminated by using property filters,...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1008130001697
更新日期：2000-03-01 00:00:00
abstract：:The binding mode of (2S)-2-[4-[[(3S)-1-acetimidoyl-3-pyrrolidinyl]oxy]phenyl]-3-(7-ami dino-2- naphthyl)propanoic acid hydrochloride (DX-9065a, 4) to Factor Xa is examined using inhibition data for a series of analogs that have a hydrophobic group as well as basic or dibasic functionality. Comparative molecular field ...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1007969517376
更新日期：1998-03-01 00:00:00
abstract：:Estimation of bioavailability and toxicity at the very beginning of the drug development process is one of the big challenges in drug discovery. Most of the processes involved in ADME are driven by rather unspecific interactions between drugs and biological macromolecules. Within the past decade, drug transport pumps ...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1023828527638
更新日期：2002-11-01 00:00:00
abstract：:The previously proposed models for the recognition and activation of 5-HT and histamine-H2 receptors, which were employed to explain the antagonist activity of LSD at both of these receptors, as well as the selective antagonism for H2 receptors by SKF-10856 and 9,10-dihydro-LSD, are used herein to design a compound to...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/BF00124342
更新日期：1991-06-01 00:00:00
abstract：:Utilization of coupling constants as restraints in computational structure refinement is reviewed. In addition, we address the effect of conformational averaging and examine different approaches to apply the restraints when the experimental observable is obviously a result of averaging. Here, two different computation...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/BF00124347
更新日期：1994-02-01 00:00:00
abstract：:The linear finite difference Poisson-Boltzmann (FDPB) equation is applied to the calculation of the electrostatic binding free energies of a group of inhibitors to the Neuraminidase enzyme. An ensemble of enzyme-inhibitor complex conformations was generated using Monte Carlo simulations and the electrostatic binding f...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1008197913568
更新日期：2001-02-01 00:00:00
abstract：:The three-dimensional structure of dolastatin-10, an extremely potent cytostatic and antineoplastic peptide extracted from the mollusc Dolabella auricularia, has not yet been fully characterized in an experimental way. By means of a systematic conformational search of the natural peptide and of two mutated analogs, ca...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/BF00124000
更新日期：1995-10-01 00:00:00
abstract：:The electron-conformational (EC) method in QSAR problems employs a unique (based on first principles) descriptor of molecular properties that incorporates the electronic structure and topology of the molecule and is presented in a digital-matrix form suitable for computer processing, the EC matrix of congruity (ECMC)....
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-008-9191-x
更新日期：2008-06-01 00:00:00
abstract：:Quantitative Structure-Activity Relationship (QSAR) models are used increasingly to screen chemical databases and/or virtual chemical libraries for potentially bioactive molecules. These developments emphasize the importance of rigorous model validation to ensure that the models have acceptable predictive power. Using...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1025386326946
更新日期：2003-02-01 00:00:00
abstract：:Poly(amidoamine) (PAMAM) dendrimers have been extensively studied as delivery vectors in biomedical applications. A limited number of molecular dynamics (MD) simulation studies have investigated the effect of surface chemistry on therapeutic molecules loading, with the aim of providing insights for biocompatibility im...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-017-0091-9
更新日期：2017-12-01 00:00:00
abstract：:Modelling studies have been carried out on the phosphodiesterase (PDE) substrates, adenosine- and guanosine-3'5'-cyclic monophosphates, and on a number of non-specific and type III-specific phosphodiesterase inhibitors. These studies have assisted the understanding of PDE substrate differentiation and the design of po...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/BF01676955
更新日期：1987-07-01 00:00:00
abstract：:Targeting Proviral integration-site of murine Moloney leukemia virus 1 kinase, hereafter called Pim-1 kinase, is a promising strategy for treating different kinds of human cancer. Headed for this a total list of 328 formerly reported Pim-1 kinase inhibitors has been explored and divided based on the pharmacophoric fea...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-015-9887-7
更新日期：2016-01-01 00:00:00
abstract：:The pharmacophoric concept plays an important role in ligand-based drug design methods to describe the similarity and diversity of molecules, and could also be exploited as a molecular representation scheme. A three-point pharmacophore method was used as a molecular representation perception. This procedure was implem...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-007-9110-6
更新日期：2007-05-01 00:00:00
abstract：:The Multiple Copy Simultaneous Search methodology has been used to construct functionality maps for an extended region of human thrombin, including the active site. This method allows the determination of energetically favorable positions and orientations for functional groups defined by the user on the three-dimensio...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/BF00124460
更新日期：1996-02-01 00:00:00
abstract：:In a previous paper, we have shown the utility of cluster analysis for identifying patterns in the way the C alpha atoms of fragments of the beta-turn are distributed in three dimensions. This work has been extended to the C alpha-C beta bond vectors of 2- and 3-side-chain fragments. Again, distinct patterns emerge an...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1008014620568
更新日期：1999-09-01 00:00:00
abstract：:Here, we report our results from quantitative structure-activity relationship studies on tyrosinase inhibitors. Interactions between benzoic acid derivatives and tyrosinase active sites were also studied using a molecular docking method. These studies indicated that one possible mechanism for the interaction between b...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-008-9187-6
更新日期：2008-05-01 00:00:00
abstract：:The Drug Design Data Resource (D3R) Grand Challenges present an opportunity to assess, in the context of a blind predictive challenge, the accuracy and the limits of tools and methodologies designed to help guide pharmaceutical drug discovery projects. Here, we report the results of our participation in the D3R Grand ...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-019-00249-1
更新日期：2020-02-01 00:00:00
abstract：:For computational de novo design, a general retrospective validation work is a very challenging task. Here we propose a comprehensive workflow to de novo design driven by the needs of computational and medicinal chemists and, at the same time, we propose a general validation scheme for this technique. The study was co...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-009-9291-2
更新日期：2009-08-01 00:00:00
abstract：:There is a need for improved and generally applicable scoring functions for fragment-based approaches to ligand design. Here, we evaluate the performance of a computationally efficient model for inhibitory activity estimation, which is composed only of multipole electrostatic energy and dispersion energy terms that ap...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-017-0035-4
更新日期：2017-08-01 00:00:00
abstract：:SIRT1 is an NAD+-dependent deacetylase, whose activators have potential therapeutic applications in the age-related, metabolic, neurode-generative and cardiovascular diseases. Resveratrol (RSV) has been regarded as potent SIRT1 activator in the treatment of atherosclerosis and cardiovascular diseases. Moreover, the pr...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-019-00193-0
更新日期：2019-04-01 00:00:00
abstract：:Steric complementarity is a prerequisite for ligand-receptor recognition; this implies that drugs with a common receptor binding site should possess sterically similar binding surfaces. This principle is used as the basis for an automatic and unbiased method that superposes molecules. One molecule is rotated and trans...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/BF00124319
更新日期：1995-12-01 00:00:00
abstract：:Even though it is highly toxic, Amphotericin B (AmB), an amphipathic polyene macrolide antibiotic, is used in the treatment of severe systemic fungal infections as a life-saving drug. To examine the influence of conformational factors on selective toxicity of these compounds, we have investigated the conformational pr...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1008144208706
更新日期：2000-10-01 00:00:00
abstract：:RNA interference (RNAi) is a critical cellular pathway activated by double stranded RNA and regulates the gene expression of target mRNA. During RNAi, the 3' end of siRNA binds with the PAZ domain, followed by release and rebinding in a cyclic manner, which deemed essential for proper gene silencing. Recently, we prov...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-013-9665-3
更新日期：2013-07-01 00:00:00
abstract：:An evolutionary algorithm was developed for fragment-based de novo design of molecules (TOPAS, TOPology-Assigning System). This stochastic method aims at generating a novel molecular structure mimicking a template structure. A set of approximately 25,000 fragment structures serves as the building block supply, which w...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1008184403558
更新日期：2000-07-01 00:00:00
abstract：:In drug discovery, prediction of binding affinity ahead of synthesis to aid compound prioritization is still hampered by the low throughput of the more accurate methods and the lack of general pertinence of one method that fits all systems. Here we show the applicability of a method based on density functional theory ...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-015-9880-1
更新日期：2015-12-01 00:00:00
abstract：:This paper tests the performance of a simple empirical scoring function on a set of candidate designs produced by a de novo design package. The scoring function calculates approximate ligand-receptor binding affinities given a putative binding geometry. To our knowledge this is the first substantial test of an empiric...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1023/a:1008040323669
更新日期：1998-09-01 00:00:00
abstract：:Cheminformatics protocols have been developed and assessed that identify a small set of fragments which can represent the compounds in a chemical library for use in fragment-based ligand discovery. Six different methods have been implemented and tested on Input Libraries of compounds from three suppliers. The resultin...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-011-9461-x
更新日期：2011-07-01 00:00:00
abstract：:Chemical space networks (CSNs) have recently been introduced as an alternative to other coordinate-free and coordinate-based chemical space representations. In CSNs, nodes represent compounds and edges pairwise similarity relationships. In addition, nodes are annotated with compound property information such as biolog...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-015-9872-1
更新日期：2015-10-01 00:00:00
abstract：:Using the X-ray crystal structure of the human topoisomerase I (top1) - DNA cleavable complex and the Sybyl software package, we have developed a general model for the ternary cleavable complex formed with four protoberberine alkaloids differing in the substitution on the terminal phenyl rings and covering a broad ran...
journal_title：Journal of computer-aided molecular design
pub_type： 杂志文章
doi：10.1007/s10822-004-7878-1
更新日期：2004-12-01 00:00:00
