# 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,-4.20,0.04,1.50 SAMPL9-2,-6.45,0.10,1.50 SAMPL9-3,-7.41,0.05,1.50 SAMPL9-4,-7.68,0.07,1.50 SAMPL9-5,-6.98,0.07,1.50 SAMPL9-6,1.27,0.04,1.50 SAMPL9-7,-9.65,0.16,1.50 SAMPL9-8,0.22,0.13,1.50 SAMPL9-9,-7.39,0.04,1.50 SAMPL9-10,0.34,0.42,1.50 SAMPL9-11,-0.90,0.03,1.50 SAMPL9-12,2.35,0.03,1.50 SAMPL9-13,-3.35,0.14,1.50 SAMPL9-14,-7.02,0.08,1.50 SAMPL9-15,2.35,0.09,1.50 SAMPL9-16,-8.69,0.11,1.50 # # # 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_GAFF_TIP3P MD (GAFF/TIP3P) # # # 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: 10255 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 AmberTools ACPYPE 0 (2017) # 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 Antechamber from AmberTools and ACPYPE for AMBER (GAFF) with the TIP3P 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