Macs in Chemistry

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OEDocking v3 released

OpenEye has to announced the release of OEDocking v3.0.0. OEDocking is a suite of well-validated molecular docking applications (FRED, HYBRID, POSIT) and their associated workflows. This release features the official introduction of HYBRID, as well as a major upgrade to FRED.

POSIT - Ligand guided pose prediction FRED - Fast exhaustive docking HYBRID - Ligand guided docking

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POSIT Updated

POSIT is primarily based on the assumption that similar ligands bind similarly. Unlike most docking protocols, POSIT requires the presence of a known bound ligand. The bound ligand is used to impart docking constraints when placing and optimizing the geometry of the molecule being docked.

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OpenEye Applications added to listing

I was reading the announcements of new products from OpenEye and I thought I should update the listings.

AFITT from OpenEye is the only software to offer a fully automatic ligand fitting process that optimizes a real-space fit to density while keeping conformational strain to a minimum. It capitalizes on a combination of core technologies that OpenEye has developed, specifically conformer generation, shape potential, high quality small molecule structure minimization, and visualization. The key step, after finding the appropriate conformers and aligning them to density, is the implementation of a refinement that combines force field and shape potentials, via a series of adiabatic optimizations [1]. The AFITT distribution includes both a GUI and a collection of command-line applications.

BROOD is a software application designed to help project teams in drug discovery explore chemical and property space around their hit or lead molecule. BROOD generates analogs of the lead by replacing selected fragments in the molecule with fragments that have similar shape and electrostatics, yet with selectively modified molecular properties. BROOD fragment searching has multiple applications, including lead-hopping, side-chain enumeration, patent breaking, fragment merging, property manipulation, and patent protection by SAR expansion.

FILTER is a very fast molecular filtering and selection application. It uses a combination of physical property calculations and functional group knowledge to remove undesirable compounds before they enter experimental or virtual screening. Undesirable properties may include: toxic functionalities, a high likelihood of binding covalently with the target protein, interfering with the experimental assay, and/or a low probability of oral bioavailability.

QUACPAC provides pKa and tautomer enumeration in order to get correct protonation states. It also offers multiple partial charge models (including MMFF94 [1], AM1-BCC [2], and AMBER [3]) that cover a range of speed and quality in order to allow appropriate charging for every end use. QUACPAC's approach to tautomeric enumeration is to provide multiple tautomeric states rather than one "correct" tautomer. Subsequent downstream processes are then used to identify the appropriate tautomeric form.

SZYBKI optimizes molecular structures with the Merck Molecular Force Field, either with or without solvent effect, to yield quality 3D molecular structures for use as input to other programs. Since the chemistry of molecular interactions is a matter of shape and electrostatics, it is impossible to consider either without reasonable 3D molecular structures. SZYBKI also refines portions of a protein structure and optimize ligands within a protein active site, making it useful in conjunction with docking programs.

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Molecular FORECASTER

I just heard about a platform - FORECASTER - that includes programs for drug discovery and process chemistry, these include

  1. FITTED, a docking program
  2. PREPARE, PROCESS and SMART, programs that can prepare protein and ligand files automatically
  3. CONVERT, a program that converts 2D molecules to energy-minimized 3D molecules (adds hydrogens, generates tautomers and protomers)
  4. SELECT, a program that computes compound similarity, extracts focused highly diverse libraries or identifies analogues
  5. REDUCE, a program that filters using descriptors and functionnal groups
  6. REACT, a program that performs combinatorial chemistry in silico from user-defined chemical schemes
  7. IMPACTS, a sites of metabolism prediction program (CYP 450)
  8. ACE, a program that predicts the stereochemical outcome of reactions

All the programs are integrated into a new web-based graphical interface that allows complete automation of the different workflows. 

You can read more details here, Integrating Medicinal Chemistry, Organic/Combinatorial Chemistry, and Computational Chemistry for the Discovery of Selective Estrogen Receptor Modulators with Forecaster, a Novel Platform for Drug Discovery

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MOE 2011.10 released, Lion compatible

CCG have announced the release of MOE 2011.10. This includes a new license manager compatible with LIon.

Some of the new and enhanced features in MOE include:

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Non-Bonded Interaction Visualization Model - Visualize halogen bonds, H-bonds, CH-X, proton- for interactive modeling - Calculate strengths using Extended Hckel Model - Display strengths and interactions in 2D Ligand Interaction Diagrams Sequence Editor Redesign - Wrapped view, zoom, chain name/tag, etc. - Synchronized coloring (% identity, similarity, Clustal X, RMSD) - Cut and paste for loop grafting, inserting linkers, filling gaps, etc. Combinatorial Build in Pocket - Add R-groups to one or more attachment points in 3D pocket - Apply 2D and 3D filters, refine in (flexible) pocket and score - Use Builder to scan fragments for interactive ligand optimization Analysis of Solvent in Binding - Calculate within minutes a solvent binding free energy map using 3D-RISM - Calculate water, salt and hydrophobe solvation densities in complex or apo receptor - Diagnose how well alternate groups take advantage of water upon binding Macromolecular System Preparation - Correct common problems in protein structures automatically - Browse alternate conformations, cap termini, build missing loops - Optimize hydrogen bond network by flipping residues and adjusting states GPCR Family Database and Alignment Tools - Identify and annotate transmembrane regions of GPCRs - Add alignment constraints to improve GPCR sequence alignments - Augment a database of GPCR crystal structures with in-house data


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New major release of Molegro Virtual Docker

Molegro is pleased to announce a new major release of Molegro Virtual Docker, an integrated platform for computational drug design available for Windows, Linux, and Mac OS X. Molegro Virtual Docker offers high-quality protein-ligand docking based on novel optimization techniques combined with a user interface experience focusing on usability and productivity.

Major new features in version 5.0: -GPU-accelerated docking on CUDA supported hardware making it possible to screen drug-like compounds up to 30 times faster than using conventional CPU-based methods. The GPU implementation builds upon and extends the research described in the paper "GPU-Accelerated High-Accuracy Molecular Docking using Guided Differential Evolution" (http://dl.acm.org/citation.cfm?id=2001576.2001818). -The new 2D Ligand Map provides an easy way to inspect and visualize protein-ligand interactions.

For more information, or to download a trial version, please visit our company website at: http://www.molegro.com


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Molegro Virtual Grid

Molegro Virtual Grid creates an infrastructure for distributing docking runs on multiple machines. By simply installing the MVG agent on a computer, its resources can be used transparently by the grid controller. Virtual Grid support is built into Molegro Virtual Docker: for instance, to dock a library of compounds against a receptor, simply setup a compound data source, and select 'start job on Virtual Grid' in the Docking Wizard. Molegro Virtual Grid is multi-core aware and can be installed on any platform: Linux, Windows, and Mac. The machines in the grid do not need to run the same operating system. Now added to the alphabetical listing

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OpenCL in scientific computing

I was at the Cresset UGM yesterday and saw an excellent talk by Simon McIntosh-Smith describing their work porting the docking software Bude (that was originally written in a mixture of Fortran and C++) over to OpenCL.

The performance gains were very impressive, what was equally striking was the efficiency gains as measured by electricity usage, it looks like several thousand pounds will be saved for every million compound docking run.

He also showed the portability of OpenCL code, allowing efficient use of both the GPU and CPU.

He has a report on “The GPU Computing Revolution” available online

https://ktn.innovateuk.org/web/mathsktn/articles/-/blogs/the-gpu-computing-revolution


If you would like to learn more Apple have a
OpenCL section in the Developer library, and Simon’s website is an invaluable resource, and there a couple of recommended books (links to Amazon)







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Chil² platform availabe on Macs

The Chil² platform offers a complete molecular modeling environment. Read More...
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AMMOS added

AMMOS (Automatic Molecular Mechanics Optimization for in silico Screening) employs an automatic procedure for energy minimization of protein-ligands complexes Read More...
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FITTED has been updated

FITTED has been updated to 2.6.1 and is available for download.

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New Applications Added

ORCA (quantum Chemistry), HADDOCK (Molecular Docking). Read More...
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AutoDock Vina

AutoDock Vina: Improving the speed and accuracy of docking with a new scoring function, efficient optimization, and multithreading
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Docking.org

John Irwin has updated the docking.org site. Read More...
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AutoDock

The molecular docking program AutoDock has been updated to version 4.

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