# WATER-TOLUENE (ΔG_toluene - ΔG_water) TRANSFER FREE ENERGY PREDICTIONS # # This file will be automatically parsed. It must contain the following four elements: # predictions, name of method, software listing, and method description. # These elements must be provided in the order shown with their respective headers. # # Any line that begins with a # is considered a comment and will be ignored when parsing. # # # PREDICTION SECTION # # It is mandatory to submit water to toluene (ΔG_toluene - ΔG_water) transfer free energy (TFE) predictions for all 16 molecules. # Incomplete submissions will not be accepted. # The energy units must be in kcal/mol. # Please report the general molecule `ID tag` in the form of `SAMPL9-XX` (e.g. SAMPL9-1, SAMPL9-2, etc). # Please report TFE standard error of the mean (SEM) and TFE model uncertainty. # # The data in each prediction line should be structured as follows: # ID tag, TFE, TFE SEM, TFE model uncertainty # # If you use a microstate other than the challenge provided microstate, please note SMILES strings of microstates you used in your submission, such as in the methods section. # # The list of predictions must begin with the 'Predictions:' keyword as illustrated here. Predictions: SAMPL9-1,-8.71,0.06,1.50 SAMPL9-2,-6.62,0.09,1.50 SAMPL9-3,-8.87,0.04,1.50 SAMPL9-4,-10.50,0.05,1.50 SAMPL9-5,-8.23,0.09,1.50 SAMPL9-6,1.72,0.05,1.50 SAMPL9-7,-7.09,0.15,1.50 SAMPL9-8,-5.99,0.14,1.50 SAMPL9-9,-8.17,0.04,1.50 SAMPL9-10,-7.22,0.04,1.50 SAMPL9-11,-4.54,0.03,1.50 SAMPL9-12,0.36,0.03,1.50 SAMPL9-13,-4.56,0.17,1.50 SAMPL9-14,-6.92,0.04,1.50 SAMPL9-15,2.59,0.04,1.50 SAMPL9-16,-8.45,0.07,1.50 # # # Please list your name, using only UTF-8 characters as described above. The "Participant name:" entry is required. Participant name: Oliver Beckstein/Bogdan I. Iorga # # # Please list your organization/affiliation, using only UTF-8 characters as described above. Participant organization: Arizona State University, USA/ICSN, CNRS, Gif-sur-Yvette, France # # # NAME SECTION # # Please provide an informal but informative name of the method used. # The name must not exceed 40 characters. # The 'Name:' keyword is required as shown here. Name: # SAMPL9_logP_MDPOW_OPLS-AA_TIP4P MD (OPLS-AA/TIP4P) # # # COMPUTE TIME SECTION # # Please provide the average compute time across all of the molecules. # For physical methods, report the GPU and/or CPU compute time in hours. # For empirical methods, report the query time in hours. # Create a new line for each processor type. # The 'Compute time:' keyword is required as shown here. Compute time: 11076 hours, CPU # # COMPUTING AND HARDWARE SECTION # # Please provide details of the computing resources that were used to train models and make predictions. # Please specify compute time for training models and querying separately for empirical prediction methods. # Provide a detailed description of the hardware used to run the simulations. # The 'Computing and hardware:' keyword is required as shown here. Computing and hardware: All the simulations were performed in parallel (8 cores for each simulation) on cluster nodes running with CentOS6 and 4 CPU Intel Xeon E5-4627 v3 @ 2.60GHz. # SOFTWARE SECTION # # List all major software packages used and their versions. # Create a new line for each software. # The 'Software:' keyword is required. Software: Gromacs 2020.3 MDPOW 0.8.0-dev mol2ff # METHOD CATEGORY SECTION # # State which method category your prediction method is better described as: # `Physical (MM)`, `Physical (QM)`, `Empirical`, or `Mixed`. # Pick only one category label. # The `Category:` keyword is required. Category: physical (MM) # METHOD DESCRIPTION SECTION # # Methodology and computational details. # Level of details should be roughly equivalent to that used in a publication. # Please include the values of key parameters with units. # Please explain how statistical uncertainties were estimated. # # If you have evaluated additional microstates, please report their SMILES strings and populations of all the microstates in this section. # If you used a microstate other than the challenge provided microstate (`SMXX_micro000`), please list your chosen `Molecule ID` (in the form of `SMXX_extra001`) along with the SMILES string in your methods description. # # Use as many lines of text as you need. # All text following the 'Method:' keyword will be regarded as part of your free text methods description. Method: Alchemical free energy calculations were performed in explicit solvent, following the protocol described in [1-3]. Parameters were generated with the OPLS-AA mol2ff software (B.I. Iorga, unpublished; also used in [1-3]) for OPLS-AA with the TIP4P water model. Files were prepared for Gromacs 2020.3. Autocorrelation analysis and the multistate Bennett acceptance ratio (MBAR) were performed with the alchemlyb Python package (https://github.com/alchemistry/alchemlyb), release 1.0.1 as integrated into MDPOW. Errors are reported as errors of the mean (see [1-3]). The model uncertainty was estimated on the basis of the results from [2]. [1] Kenney, I. M., Beckstein, O., and Iorga, B. I. (2016) Prediction of cyclohexane-water distribution coefficients for the SAMPL5 data set using molecular dynamics simulations with the OPLS-AA force field, J. Comput. Aided Mol. Des. 30(11):1045-1058 DOI: 10.1007/s10822-016-9949-5. [2] Fan, S., Iorga, B. I., and Beckstein, O. (2020) Prediction of octanol-water partition coefficients for the SAMPL6-logP molecules using molecular dynamics simulations with OPLS-AA, AMBER and CHARMM force fields, J Comput Aided Mol Des 34(5):543-560 DOI: 10.1007/s10822-019-00267-z. [3] Fan S, Nedev H, Vijayan R, Iorga BI, Beckstein O. (2021) Precise force-field-based calculations of octanol-water partition coefficients for the SAMPL7 molecules. J Comput Aided Mol Des. 35(7):853-870 DOI: 10.1007/s10822-021-00407-4. # # # All submissions must either be ranked or non-ranked. # Only one ranked submission per participant is allowed. # Multiple ranked submissions from the same participant will not be judged. # Non-ranked submissions are accepted so we can verify that they were made before the deadline. # The "Ranked:" keyword is required, and expects a Boolean value (True/False) Ranked: False