Ejemplo n.º 1
0
        static void RunJobAngleCXCX(object start)
        {
            JobStartParamsCXCX startParams = (JobStartParamsCXCX)start;
            int count = 0;

            // Get a bunch of fusions with the h**o-oligomer axes positioned such that after transformation by the symmetry definition's first coordinate system transformation,
            // the axes overlap the first and second repeating unit axes
            SymmetryBuilder  builder           = startParams.Symmetry;
            CoordinateSystem coordinateSystem1 = builder.GetPrincipalCoordinateSystem(startParams.UnitId1);
            CoordinateSystem coordinateSystem2 = builder.GetPrincipalCoordinateSystem(startParams.UnitId2);
            Line             principalAxis1    = Line.CreateFromPointAndDirection(coordinateSystem1.Translation, coordinateSystem1.UnitX); // The rosetta symdefs axes are along X of each transformed coordinate system, but something not requiring foreknowledge would be nice.
            Line             principalAxis2    = Line.CreateFromPointAndDirection(coordinateSystem2.Translation, coordinateSystem2.UnitX); // The rosetta symdefs axes are along X of each transformed coordinate system, but something not requiring foreknowledge would be nice.
            Quaternion       premultiply       = Quaternion.Inverse(coordinateSystem1.Transform.Rotation);

            principalAxis1.Direction = Vector3.Transform(principalAxis1.Direction, premultiply);
            principalAxis2.Direction = Vector3.Transform(principalAxis2.Direction, premultiply);
            principalAxis1.Point     = Vector3.Transform(principalAxis1.Point, premultiply);
            principalAxis2.Point     = Vector3.Transform(principalAxis2.Point, premultiply);
            TwoAxisRealignment      axisAlignmentUtility = TwoAxisRealignment.Create((float)startParams.AngleDegrees, principalAxis1, principalAxis2);
            List <FusionDesignInfo> fusions = Fuse.SymmetricFusionGenerator.CnCn(startParams.Cx1, startParams.Cx2, startParams.ChainCount1, startParams.ChainCount2, startParams.AngleDegrees, axisAlignmentUtility);

            int writtenOutCount = 0;

            foreach (FusionDesignInfo fusion in fusions)
            {
                // Create the pdb chains as per the symmetry builder and find whether any of these copies clashes
                bool         fullSystemClashes = false;
                List <Chain> outputChains      = new List <Chain>();

                if (builder is PxSymmetryBuilder)
                {
                    TwoAxisFusionDesignInfo twoAxisFusion = (TwoAxisFusionDesignInfo)fusion;
                    PxSymmetryBuilder       pxBuilder     = (PxSymmetryBuilder)builder;
                    pxBuilder.Scale = Line.GetDistance(twoAxisFusion.Axis1, twoAxisFusion.Axis2.Point) / Line.GetDistance(principalAxis1, principalAxis2.Point);
                    //pxBuilder.Scale = 2 * Line.GetDistance(twoAxisFusion.Axis2, twoAxisFusion.Axis1.Point);
                }

                CoordinateSystem[] coordinateSystems = builder.GetCoordinateSystems(startParams.UnitId1);
                for (int i = 0; i < coordinateSystems.Length; i++)
                {
                    outputChains.Add(new Chain(fusion.Peptide));
                    outputChains[i].Transform(coordinateSystems[i].Transform);


                    if (i > 0 && Clash.AnyContact(outputChains[0], outputChains[i], Clash.ContactType.MainchainMainchainClash))
                    {
                        fullSystemClashes = true;
                        break;
                    }
                }

#if DEBUG
                IChain[] originalChains = fusion.PdbOutputChains;
#endif
                fusion.PdbOutputChains = outputChains.ToArray();

                if (fullSystemClashes || writtenOutCount >= startParams.TopX)
                {
                    continue;
                }

                lock (lockFileIO)
                {
                    // Output files
                    string identifier = String.Format("CXCX_{0}_{1}_{2}_{3}", startParams.OutputPrefix, startParams.PdbCodeBundle1, startParams.PdbCodeBundle2, count++);

                    // -resfile
                    Resfile resfile = new Resfile();
                    fusion.DesignablePositions.ToList().ForEach(item => resfile.SetNotAminoAcids(0, item, "MW"));  // Set the designable residues, disallowing Met and Trp entirely
                    fusion.ImmutablePositions.ToList().ForEach(item => resfile.SetNativeRotamer(0, item));         // Set the immutable positions, overriding any designable ones if they conflict
                    File.AppendAllLines(identifier + ".resfile", resfile.GetFileText());

                    // -scores
                    File.AppendAllText("scores_CXCX.txt", String.Format("{0} {1:F2}\n", identifier, fusion.Score));

                    // -forward folding fixed-backbone ranges
                    File.AppendAllText(identifier + ".fixed_ranges", String.Format("fixedbb_range1={0}-{1} fixedbb_range2={2}-{3}", 1, fusion.IdentityRanges[0].End + 1, fusion.IdentityRanges[1].Start + 1, fusion.Peptide.Count));

                    // -pdbs
                    PdbQuick.Save(identifier + "_monomer.pdb", new IChain[] { fusion.Peptide });
                    PdbQuick.Save(identifier + "_multichain.pdb", fusion.PdbOutputChains);
#if DEBUG
                    PdbQuick.Save(identifier + "_2axis.pdb", originalChains);
#endif
                }
            }
            Console.WriteLine("Completed triplet [Bundle {0}]:[Bundle {1}], {2:F2} degrees, {3:F2}% ({4}/{5})", startParams.PdbCodeBundle1, startParams.PdbCodeBundle2, startParams.AngleDegrees, startParams.Counter.PercentComplete, startParams.Counter.Complete, startParams.Counter.Total);

            startParams.Counter.IncrementComplete();
            _threadCountSemaphore.Release();
        }
Ejemplo n.º 2
0
        static void RunJobAngleCXRCX(object obj)
        {
            JobStartParamsCXRCX start = (JobStartParamsCXRCX)obj;
            int count = 0;

            // Get a bunch of fusions with the h**o-oligomer axes positioned such that after transformation by the symmetry definition's first coordinate system transformation,
            // the axes overlap the first and second repeating unit axes
            SymmetryBuilder  builder           = start.Symmetry;
            CoordinateSystem coordinateSystem1 = builder.GetPrincipalCoordinateSystem(start.UnitId1);
            CoordinateSystem coordinateSystem2 = builder.GetPrincipalCoordinateSystem(start.UnitId2);
            Structure        cnAsymmetricUnit1 = new Structure(start.Cx1);
            Structure        cnAsymmetricUnit2 = new Structure(start.Cx2);
            Structure        spacer            = new Structure(start.Repeat);

            Line principalAxis1 = Line.CreateFromPointAndDirection(coordinateSystem1.Translation, coordinateSystem1.UnitX); // The rosetta symdefs axes are along X of each transformed coordinate system, but something not requiring foreknowledge would be nice.
            Line principalAxis2 = Line.CreateFromPointAndDirection(coordinateSystem2.Translation, coordinateSystem2.UnitX); // The rosetta symdefs axes are along X of each transformed coordinate system, but something not requiring foreknowledge would be nice.
            //Quaternion premultiply = Quaternion.Inverse(coordinateSystem1.Transform.Rotation);
            //principalAxis1.Direction = Vector3.Transform(principalAxis1.Direction, premultiply);
            //principalAxis2.Direction = Vector3.Transform(principalAxis2.Direction, premultiply);
            //principalAxis1.Point = Vector3.Transform(principalAxis1.Point, premultiply);
            //principalAxis2.Point = Vector3.Transform(principalAxis2.Point, premultiply);
            //AxisRealignment axisAlignmentUtility = AxisRealignment.Create((float) start.AngleDegrees, principalAxis1, principalAxis2);
            TwoAxisRealignment axisAlignmentUtility = AxisRealignmentFactory.Create(builder.GetArchitecture(), start.UnitId1, start.UnitId2);

            for (int chainIndexCn1 = 0; chainIndexCn1 < cnAsymmetricUnit1.Count; chainIndexCn1++)
            {
                for (int chainIndexCn2 = 0; chainIndexCn2 < cnAsymmetricUnit2.Count; chainIndexCn2++)
                {
                    for (int chainIndexSpacer = 0; chainIndexSpacer < spacer.Count; chainIndexSpacer++)
                    {
                        List <Model> outputs = Fuse.SymmetricFusionGenerator.CnSnCn(
                            (IStructure)cnAsymmetricUnit1.DeepCopy(),
                            (IStructure)cnAsymmetricUnit2.DeepCopy(),
                            new IStructure[] { (IStructure)spacer.DeepCopy() },
                            new int[] { chainIndexCn1 },
                            new int[] { chainIndexCn2 },
                            new int[][] { new int[] { chainIndexSpacer } },
                            builder, start.UnitId1, start.UnitId2);

                        int writtenOutCount = 0;
                        foreach (Model output in outputs)
                        {
                            // Output files
                            lock (lockFileIO)
                            {
                                string prefixFullStructure  = String.Format("CXRCX_{0}_{1}_{2}_{3}_{4}", start.OutputPrefix, start.PdbCodeBundle1, start.PdbCodeRepeat, start.PdbCodeBundle2, count++);
                                string prefixAsymmetricUnit = "ASU_" + prefixFullStructure;

                                PdbQuick.Save(prefixFullStructure + ".pdb", output.Structure);
                                PdbQuick.Save(prefixAsymmetricUnit + ".pdb", output.AsymmetricUnit);

                                // Determine which residues should be designable: include residues whose contacts have been removed and
                                // those with new contacts between previously separate substructures, but not existing interface residues
                                Selection designable = new Selection(output.Selections[SymmetricFusionGenerator.AaSelectionAsuDesignable]);

                                // Save a resfile identifying the designable residues
                                Resfile resfileDesignable = new Resfile();
                                resfileDesignable.SetDesignOperation(output.AsymmetricUnit, designable, ResfileDesignOperation.NOTAA, new char[] { 'W', 'M', 'P', 'C' });
                                File.AppendAllLines(prefixAsymmetricUnit + ".resfile", resfileDesignable.GetFileText());
                            }
                            writtenOutCount++;
                        }
                    }
                }
            }

            start.Counter.IncrementComplete();
            Console.WriteLine("Completed triplet [Bundle {0}]:[Repeat {1}]:[Bundle {2}], {3:F2} degrees, {4:F2}% ({5}/{6})", start.PdbCodeBundle1, start.PdbCodeRepeat, start.PdbCodeBundle2, start.AngleDegrees, start.Counter.PercentComplete, start.Counter.Complete, start.Counter.Total);
            _threadCountSemaphore.Release();
        }