Ejemplo n.º 1
0
        public static void TestVeryCloseExperimentalsModern()
        {
            IDictionary <int, List <Modification> > mods = new Dictionary <int, List <Modification> >();

            ModificationMotif.TryGetMotif("M", out ModificationMotif motif);
            var             prot            = new Protein("MMMM", null, null, null, mods);
            DigestionParams digestionParams = new DigestionParams(minPeptideLength: 1);
            var             thePep          = prot.Digest(digestionParams, new List <Modification>(), new List <Modification>()).First();

            var frags = new List <Product>();

            thePep.Fragment(DissociationType.HCD, FragmentationTerminus.Both, frags);
            var massArray = frags.Select(p => p.NeutralMass).ToArray();

            Array.Sort(massArray);
            double[]   intensities  = new double[] { 1, 1, 1, 1 };
            double[]   mz           = new double[] { 1, 2, massArray[4].ToMz(1), massArray[4].ToMz(1) + 1e-9 };
            MzSpectrum massSpectrum = new MzSpectrum(mz, intensities, false);
            MsDataScan scan         = new MsDataScan(massSpectrum, 1, 1, true, Polarity.Positive, 1, new MzRange(300, 2000), "", MZAnalyzerType.Unknown, massSpectrum.SumOfAllY, null, null, "scan=1", 0, null, null, 0, null, DissociationType.Unknown, 1, null);

            PeptideSpectralMatch[]    globalPsms            = new PeptideSpectralMatch[1];
            Ms2ScanWithSpecificMass[] arrayOfSortedMS2Scans = { new Ms2ScanWithSpecificMass(scan, 600, 1, null, new CommonParameters()) };
            CommonParameters          CommonParameters      = new CommonParameters(productMassTolerance: new PpmTolerance(5), scoreCutoff: 1, digestionParams: new DigestionParams(maxMissedCleavages: 0, minPeptideLength: 1, maxModificationIsoforms: int.MaxValue, initiatorMethionineBehavior: InitiatorMethionineBehavior.Retain));

            var indexEngine = new IndexingEngine(new List <Protein> {
                prot
            }, new List <Modification>(), new List <Modification>(), null, null, null, 1, DecoyType.Reverse,
                                                 CommonParameters, null, 30000, false, new List <FileInfo>(), TargetContaminantAmbiguity.RemoveContaminant, new List <string>());
            var indexResults = (IndexingResults)indexEngine.Run();
            var cse          = new ModernSearchEngine(globalPsms, arrayOfSortedMS2Scans, indexResults.PeptideIndex, indexResults.FragmentIndex, 0, CommonParameters, null, new OpenSearchMode(), 0, new List <string>());

            cse.Run();
            Assert.Less(globalPsms[0].Score, 2);
            Assert.Greater(globalPsms[0].Score, 1);
        }
Ejemplo n.º 2
0
        public static void AddCompIonsCommonParams()
        {
            CommonParameters cp = new CommonParameters(null, DissociationType.HCD, DissociationType.Unknown, true, true, 3, 12, true, true, 1,
                                                       5, 200, 0.01, null, null, false, false, true, false, null, null, null, -1, null, null, null, 1, true, 4, 1);

            var myMsDataFile              = new TestDataFile();
            var variableModifications     = new List <Modification>();
            var fixedModifications        = new List <Modification>();
            var localizeableModifications = new List <Modification>();
            Dictionary <Modification, ushort> modsDictionary = new Dictionary <Modification, ushort>();

            foreach (var mod in fixedModifications)
            {
                modsDictionary.Add(mod, 0);
            }

            int ii = 1;

            foreach (var mod in variableModifications)
            {
                modsDictionary.Add(mod, (ushort)ii);
                ii++;
            }
            foreach (var mod in localizeableModifications)
            {
                modsDictionary.Add(mod, (ushort)ii);
                ii++;
            }

            var proteinList = new List <Protein> {
                new Protein("MNNNKQQQ", null)
            };

            SearchParameters SearchParameters = new SearchParameters
            {
                MassDiffAcceptorType = MassDiffAcceptorType.Exact,
                SearchTarget         = true,
            };
            List <DigestionMotif> motifs = new List <DigestionMotif> {
                new DigestionMotif("K", null, 1, null)
            };
            Protease protease = new Protease("Test", CleavageSpecificity.Full, null, null, motifs);

            ProteaseDictionary.Dictionary.Add(protease.Name, protease);

            var indexEngine = new IndexingEngine(proteinList, variableModifications, fixedModifications, new List <SilacLabel>(),
                                                 1, DecoyType.Reverse, cp, SearchParameters.MaxFragmentSize, false, new List <FileInfo>(), new List <string>());

            var indexResults = (IndexingResults)indexEngine.Run();

            Tolerance DeconvolutionMassTolerance = new PpmTolerance(5);

            var listOfSortedms2Scans = MetaMorpheusTask.GetMs2Scans(myMsDataFile, null, new CommonParameters()).OrderBy(b => b.PrecursorMass).ToArray();

            MassDiffAcceptor massDiffAcceptor = SearchTask.GetMassDiffAcceptor(cp.PrecursorMassTolerance, SearchParameters.MassDiffAcceptorType, SearchParameters.CustomMdac);

            // without complementary ions
            PeptideSpectralMatch[] allPsmsArray = new PeptideSpectralMatch[listOfSortedms2Scans.Length];
            var mse = new ModernSearchEngine(allPsmsArray, listOfSortedms2Scans, indexResults.PeptideIndex, indexResults.FragmentIndex, 0, cp, massDiffAcceptor, SearchParameters.MaximumMassThatFragmentIonScoreIsDoubled, new List <string>()).Run();
        }
Ejemplo n.º 3
0
        public static void TestVeryCloseExperimentalsModern()
        {
            IDictionary <int, List <Modification> > mods = new Dictionary <int, List <Modification> >();

            ModificationMotif.TryGetMotif("M", out ModificationMotif motif);
            var             prot            = new Protein("MMMM", null, null, null, mods);
            DigestionParams digestionParams = new DigestionParams
            {
                MinPeptideLength = 1,
            };
            var thePep = prot.Digest(digestionParams, new List <ModificationWithMass>(), new List <ModificationWithMass>()).First();

            var massArray = thePep.CompactPeptide(TerminusType.None).ProductMassesMightHaveDuplicatesAndNaNs(new List <ProductType> {
                ProductType.B, ProductType.Y
            });

            Array.Sort(massArray);
            double[]       intensities  = new double[] { 1, 1, 1, 1 };
            double[]       mz           = new double[] { 1, 2, massArray[4].ToMz(1), massArray[4].ToMz(1) + 1e-9 };
            MzmlMzSpectrum massSpectrum = new MzmlMzSpectrum(mz, intensities, false);
            IMsDataScanWithPrecursor <IMzSpectrum <IMzPeak> > scan = new MzmlScanWithPrecursor(1, massSpectrum, 1, true, Polarity.Positive, 1, new MzRange(300, 2000), "", MZAnalyzerType.Unknown, massSpectrum.SumOfAllY, 0, null, null, 0, null, DissociationType.Unknown, 1, null, null, "scan=1");

            PeptideSpectralMatch[]    globalPsms            = new PeptideSpectralMatch[1];
            Ms2ScanWithSpecificMass[] arrayOfSortedMS2Scans = { new Ms2ScanWithSpecificMass(scan, 600, 1, null) };
            CommonParameters          CommonParameters      = new CommonParameters
            {
                ProductMassTolerance = new PpmTolerance(5),
                DigestionParams      = new DigestionParams
                {
                    MaxMissedCleavages          = 0,
                    MinPeptideLength            = null,
                    MaxModificationIsoforms     = int.MaxValue,
                    InitiatorMethionineBehavior = InitiatorMethionineBehavior.Retain,
                },
                ConserveMemory = false,
                ScoreCutoff    = 1
            };
            var indexEngine = new IndexingEngine(new List <Protein> {
                prot
            }, new List <ModificationWithMass>(), new List <ModificationWithMass>(), new List <ProductType> {
                ProductType.B, ProductType.Y
            }, 1, DecoyType.Reverse, new List <IDigestionParams> {
                CommonParameters.DigestionParams
            }, CommonParameters, 30000, new List <string>());
            var indexResults = (IndexingResults)indexEngine.Run();
            var cse          = new ModernSearchEngine(globalPsms, arrayOfSortedMS2Scans, indexResults.PeptideIndex, indexResults.FragmentIndex, new List <ProductType> {
                ProductType.B, ProductType.Y
            }, 0, CommonParameters, false, new OpenSearchMode(), 0, new List <string>());

            cse.Run();
            Assert.Less(globalPsms[0].Score, 2);
            Assert.Greater(globalPsms[0].Score, 1);
        }