public DeltaMassPeak(ProteoformRelation base_relation, List <ProteoformRelation> relations_to_group)
{
lock (base_relation)
{
base_relation.peak = this;
}
lock (SaveState.lollipop)
{
instance_counter += 1; //Not thread safe
}
RelationType = base_relation.RelationType;
DeltaMass = base_relation.DeltaMass;
InstanceId = instance_counter;
grouped_relations = find_nearby_relations(relations_to_group);
Accepted = grouped_relations != null && grouped_relations.Count > 0 && grouped_relations.First().RelationType == ProteoformComparison.ExperimentalTheoretical ?
peak_relation_group_count >= SaveState.lollipop.min_peak_count_et :
peak_relation_group_count >= SaveState.lollipop.min_peak_count_ee;
possiblePeakAssignments = new List <PtmSet>();
if (SaveState.lollipop.theoretical_database.possible_ptmset_dictionary.TryGetValue(Math.Round(DeltaMass, 1), out List <PtmSet> candidates))
{
possiblePeakAssignments = candidates.Where(c => RelationType == ProteoformComparison.ExperimentalTheoretical || RelationType == ProteoformComparison.ExperimentalDecoy ?
Math.Abs(DeltaMass - c.mass) <= 0.05 :
Math.Abs(Math.Abs(DeltaMass) - Math.Abs(c.mass)) <= 0.05).ToList();
}
possiblePeakAssignments_string = "[" + String.Join("][", possiblePeakAssignments.Select(ptmset =>
String.Join(";", ptmset.ptm_combination.Select(ptm =>
SaveState.lollipop.theoretical_database.unlocalized_lookup.TryGetValue(ptm.modification, out UnlocalizedModification x) ? x.id : ptm.modification.id))).Distinct()) + "]";
}
public override bool Equals(object obj)
{
ProteoformRelation r2 = obj as ProteoformRelation;
return(r2 != null &&
(InstanceId == r2.InstanceId ||
connected_proteoforms[0] == r2.connected_proteoforms[1] && connected_proteoforms[1] == r2.connected_proteoforms[0] ||
connected_proteoforms[0] == r2.connected_proteoforms[0] && connected_proteoforms[1] == r2.connected_proteoforms[1]));
}
public AmbiguousIdentification(int begin, int end, PtmSet ptm_set, ProteoformRelation relation, TheoreticalProteoform theoretical_base, List <Proteoform> linked_proteoform_references)
{
this.begin = begin;
this.end = end;
this.relation = relation;
this.theoretical_base = theoretical_base;
this.ptm_set = ptm_set;
this.linked_proteoform_references = linked_proteoform_references;
}
public List <ProteoformRelation> relate(ExperimentalProteoform[] pfs1, Proteoform[] pfs2, ProteoformComparison relation_type, bool accepted_only, string current_directory, bool limit_et_relations)
{
if (accepted_only)
{
pfs1 = pfs1.Where(pf1 => pf1.accepted).ToArray();
}
if (accepted_only && (relation_type == ProteoformComparison.ExperimentalExperimental || relation_type == ProteoformComparison.ExperimentalFalse))
{
pfs2 = pfs2.OfType <ExperimentalProteoform>().Where(pf2 => pf2.accepted).ToArray();
}
Parallel.ForEach(pfs1, pf1 =>
{
lock (pf1)
{
pf1.candidate_relatives = pfs2.Where(pf2 => allowed_relation(pf1, pf2, relation_type)).ToList();
if (relation_type == ProteoformComparison.ExperimentalExperimental)
{
pf1.ptm_set = null;
pf1.linked_proteoform_references = null;
pf1.gene_name = null;
}
if (limit_et_relations && (relation_type == ProteoformComparison.ExperimentalTheoretical || relation_type == ProteoformComparison.ExperimentalDecoy))
{
ProteoformRelation best_relation = pf1.candidate_relatives
.Select(pf2 => new ProteoformRelation(pf1, pf2, relation_type, pf1.modified_mass - pf2.modified_mass, current_directory))
.Where(r => r.candidate_ptmset != null) // don't consider unassignable relations for ET
.OrderBy(r => r.candidate_ptmset.ptm_rank_sum + Math.Abs(Math.Abs(r.candidate_ptmset.mass) - Math.Abs(r.DeltaMass)) * 10E-6) // get the best explanation for the experimental observation
.FirstOrDefault();
pf1.candidate_relatives = best_relation != null ?
new List <Proteoform> {
best_relation.connected_proteoforms[1]
} :
new List <Proteoform>();
}
}
});
List <ProteoformRelation> relations =
(from pf1 in pfs1
from pf2 in pf1.candidate_relatives
select new ProteoformRelation(pf1, pf2, relation_type, pf1.modified_mass - pf2.modified_mass, Environment.CurrentDirectory)).ToList();
return(count_nearby_relations(relations)); //putative counts include no-mans land
}
public void clear_families()
{
families.Clear();
foreach (ExperimentalProteoform p in experimental_proteoforms)
{
p.family = null;
p.ptm_set = new PtmSet(new List <Ptm>());
p.linked_proteoform_references = null;
ProteoformRelation relation = null;
p.relation_to_id = relation;
p.ambiguous_identifications.Clear();
p.gene_name = null;
p.novel_mods = false;
p.uniprot_mods = "";
}
foreach (Proteoform p in theoretical_proteoforms)
{
p.family = null;
}
}
public List <DeltaMassPeak> accept_deltaMass_peaks(List <ProteoformRelation> relations, Dictionary <string, List <ProteoformRelation> > decoy_relations)
{
//order by E intensity, then by descending unadjusted_group_count (running sum) before forming peaks, and analyze only relations outside of no-man's-land
remaining_relations_outside_no_mans = relations.Where(r => r.outside_no_mans_land).OrderByDescending(r => r.nearby_relations_count).ThenByDescending(r => ((ExperimentalProteoform)r.connected_proteoforms[0]).agg_intensity).ToList(); // Group count is the primary sort
List <DeltaMassPeak> peaks = new List <DeltaMassPeak>();
ProteoformRelation root = remaining_relations_outside_no_mans.FirstOrDefault();
List <ProteoformRelation> running = new List <ProteoformRelation>();
List <Thread> active = new List <Thread>();
while (remaining_relations_outside_no_mans.FirstOrDefault() != null || active.Count > 0)
{
while (root != null && active.Count < 1) // Use Environment.ProcessorCount instead of 1 to enable parallization
{
if (root.RelationType != ProteoformComparison.ExperimentalExperimental && root.RelationType != ProteoformComparison.ExperimentalTheoretical)
{
throw new ArgumentException("Only EE and ET peaks can be accepted");
}
Thread t = new Thread(new ThreadStart(root.generate_peak));
t.Start();
running.Add(root);
active.Add(t);
root = find_next_root(remaining_relations_outside_no_mans, running);
}
foreach (Thread t in active)
{
t.Join();
}
foreach (DeltaMassPeak peak in running.Select(r => r.peak))
{
peaks.Add(peak);
Parallel.ForEach(peak.grouped_relations, relation =>
{
lock (relation)
{
relation.peak = peak;
relation.Accepted = peak.Accepted;
}
});
}
List <ProteoformRelation> mass_differences_in_peaks = running.SelectMany(r => r.peak.grouped_relations).ToList();
remaining_relations_outside_no_mans = remaining_relations_outside_no_mans.Except(mass_differences_in_peaks).ToList();
running.Clear();
active.Clear();
root = find_next_root(remaining_relations_outside_no_mans, running);
}
if (peaks.Count > 0 && peaks.First().RelationType == ProteoformComparison.ExperimentalTheoretical)
{
SaveState.lollipop.et_peaks.AddRange(peaks);
}
else
{
SaveState.lollipop.ee_peaks.AddRange(peaks);
}
//Nearby relations are no longer needed after counting them
Parallel.ForEach(decoy_relations.SelectMany(kv => kv.Value).Concat(relations).ToList(), r =>
{
lock (r) r.nearby_relations.Clear();
});
return(peaks);
}
public List <ProteoformRelation> relate(ExperimentalProteoform[] pfs1, Proteoform[] pfs2, ProteoformComparison relation_type, string current_directory, bool limit_et_relations)
{
if (relation_type == ProteoformComparison.ExperimentalExperimental || relation_type == ProteoformComparison.ExperimentalFalse)
{
pfs2 = pfs2.OfType <ExperimentalProteoform>().ToArray();
}
Dictionary <int, List <Proteoform> > pfs2_lysine_lookup = new Dictionary <int, List <Proteoform> >();
if (Sweet.lollipop.neucode_labeled)
{
foreach (Proteoform pf2 in pfs2)
{
if (!pfs2_lysine_lookup.TryGetValue(pf2.lysine_count, out List <Proteoform> same_lysine_ct))
{
pfs2_lysine_lookup.Add(pf2.lysine_count, new List <Proteoform> {
pf2
});
}
else
{
same_lysine_ct.Add(pf2);
}
}
}
Parallel.ForEach(pfs1, pf1 =>
{
lock (pf1)
{
if (Sweet.lollipop.neucode_labeled &&
(relation_type == ProteoformComparison.ExperimentalTheoretical ||
relation_type == ProteoformComparison.ExperimentalDecoy ||
relation_type == ProteoformComparison.ExperimentalExperimental))
{
pfs2_lysine_lookup.TryGetValue(pf1.lysine_count, out List <Proteoform> pfs2_same_lysine_count);
pf1.candidate_relatives = pfs2_same_lysine_count != null
? pfs2_same_lysine_count.Where(pf2 => allowed_relation(pf1, pf2, relation_type)).ToList()
: new List <Proteoform>();
}
else if (Sweet.lollipop.neucode_labeled && relation_type == ProteoformComparison.ExperimentalFalse)
{
List <Proteoform> pfs2_lysines_outside_tolerance = pfs2_lysine_lookup
.Where(kv => Math.Abs(pf1.lysine_count - kv.Key) > Sweet.lollipop.maximum_missed_lysines)
.SelectMany(kv => kv.Value).ToList();
pf1.candidate_relatives = pfs2_lysines_outside_tolerance
.Where(pf2 => allowed_relation(pf1, pf2, relation_type)).ToList();
}
else if (!Sweet.lollipop.neucode_labeled)
{
pf1.candidate_relatives = pfs2.Where(pf2 => allowed_relation(pf1, pf2, relation_type)).ToList();
}
if (relation_type == ProteoformComparison.ExperimentalExperimental)
{
pf1.ptm_set = null;
pf1.linked_proteoform_references = null;
pf1.ambiguous_identifications.Clear();
pf1.gene_name = null;
// pf1.relation_to_id = null;
}
if (relation_type == ProteoformComparison.ExperimentalTheoretical ||
relation_type == ProteoformComparison.ExperimentalDecoy)
{
if (limit_et_relations)
{
ProteoformRelation best_relation = pf1.candidate_relatives
.Select(pf2 => new ProteoformRelation(pf1, pf2, relation_type,
pf1.modified_mass - pf2.modified_mass, current_directory))
.Where(r => r.candidate_ptmset != null && topdown_bottomup_comparison(pf1, r.connected_proteoforms[1] as TheoreticalProteoform)
) // don't consider unassignable relations for ET
.OrderBy(r =>
r.candidate_ptmset.ptm_rank_sum +
Math.Abs(Math.Abs(r.candidate_ptmset.mass) - Math.Abs(r.DeltaMass)) *
10E-6) // get the best explanation for the experimental observation
.FirstOrDefault();
pf1.candidate_relatives = best_relation != null
? new List <Proteoform> {
best_relation.connected_proteoforms[1]
}
: new List <Proteoform>();
}
else //candidate relatives will be best T from each gene (won't get -42, etc)
{
List <ProteoformRelation> best_relatives_for_each_gene_name = new List <ProteoformRelation>();
var gene_names = pf1.candidate_relatives.Select(r =>
(r as TheoreticalProteoform).gene_name.get_prefered_name(Lollipop
.preferred_gene_label))
.Distinct();
foreach (var gene_name in gene_names)
{
best_relatives_for_each_gene_name.Add(pf1.candidate_relatives
.Where(p =>
(p as TheoreticalProteoform).gene_name.get_prefered_name(
Lollipop.preferred_gene_label) == gene_name)
.Select(pf2 => new ProteoformRelation(pf1, pf2, relation_type,
pf1.modified_mass - pf2.modified_mass, current_directory))
.Where(r => r.candidate_ptmset !=
null) // don't consider unassignable relations for ET
.OrderBy(r =>
r.candidate_ptmset.ptm_rank_sum +
Math.Abs(Math.Abs(r.candidate_ptmset.mass) - Math.Abs(r.DeltaMass)) *
10E-6) // get the best explanation for the experimental observation
.FirstOrDefault());
}
pf1.candidate_relatives = best_relatives_for_each_gene_name != null ?
best_relatives_for_each_gene_name.Where(r => r != null && topdown_bottomup_comparison(pf1, r.connected_proteoforms[1] as TheoreticalProteoform)).Select(r => r.connected_proteoforms[1]).ToList() : new List <Proteoform>();
}
}
}
});
List <ProteoformRelation> relations =
(from pf1 in pfs1
from pf2 in pf1.candidate_relatives
select new ProteoformRelation(pf1, pf2, relation_type, pf1.modified_mass - pf2.modified_mass, current_directory)).ToList();
if (relation_type == ProteoformComparison.ExperimentalExperimental ||
relation_type == ProteoformComparison.ExperimentalFalse)
{
if (Sweet.lollipop.ee_use_notch)
{
relations = relations.Where(r => r.candidate_ptmset != null).ToList();
}
}
return(count_nearby_relations(relations)); //putative counts include no-mans land
}
private void assign_pf_identity(ExperimentalProteoform e, Proteoform theoretical_reference, PtmSet set, ProteoformRelation r, int sign, PtmSet change)
{
if (r.represented_ptmset == null)
{
r.represented_ptmset = change;
if (r.RelationType == ProteoformComparison.ExperimentalExperimental)
{
r.DeltaMass *= sign;
}
}
if (e.linked_proteoform_references == null)
{
e.linked_proteoform_references = new List <Proteoform>(this.linked_proteoform_references);
e.linked_proteoform_references.Add(this);
e.ptm_set = set;
}
if (e.gene_name == null)
{
e.gene_name = this.gene_name;
}
else
{
e.gene_name.gene_names.Concat(this.gene_name.gene_names);
}
}
public DeltaMassPeak(ProteoformRelation base_relation, HashSet <ProteoformRelation> relations_to_group)
{
lock (base_relation)
{
base_relation.peak = this;
}
lock (Sweet.lollipop)
{
IncrementInstanceCounter(); //Not thread safe
}
RelationType = base_relation.RelationType;
DeltaMass = base_relation.DeltaMass;
InstanceId = instance_counter;
if (RelationType == ProteoformComparison.ExperimentalExperimental || !Sweet.lollipop.et_use_notch)
{
grouped_relations = find_nearby_relations(relations_to_group);
bool are_positive_candidates =
Sweet.lollipop.theoretical_database.possible_ptmset_dictionary.TryGetValue(Math.Round(DeltaMass, 1),
out List <PtmSet> positive_candidates);
bool are_negative_candidates =
Sweet.lollipop.theoretical_database.possible_ptmset_dictionary.TryGetValue(
Math.Round(-DeltaMass, 1), out List <PtmSet> negative_candidates) &&
(RelationType == ProteoformComparison.ExperimentalExperimental ||
RelationType == ProteoformComparison.ExperimentalFalse);
if (are_positive_candidates || are_negative_candidates)
{
List <PtmSet> candidates = (are_positive_candidates ? positive_candidates : new List <PtmSet>())
.Concat(are_negative_candidates ? negative_candidates : new List <PtmSet>()).ToList();
possiblePeakAssignments = candidates.Where(c =>
RelationType == ProteoformComparison.ExperimentalTheoretical ||
RelationType == ProteoformComparison.ExperimentalDecoy
? Math.Abs(DeltaMass - c.mass) <=
(grouped_relations.First().RelationType == ProteoformComparison.ExperimentalTheoretical
? Sweet.lollipop.peak_width_base_et
: Sweet.lollipop.peak_width_base_ee)
: Math.Abs(Math.Abs(DeltaMass) - Math.Abs(c.mass)) <=
(grouped_relations.First().RelationType == ProteoformComparison.ExperimentalTheoretical
? Sweet.lollipop.peak_width_base_et
: Sweet.lollipop.peak_width_base_ee)).ToList();
}
else
{
possiblePeakAssignments = new List <PtmSet>();
}
}
else
{
grouped_relations = relations_to_group.Where(r => Math.Round(r.candidate_ptmset.mass, 5) == Math.Round(base_relation.candidate_ptmset.mass, 5)).ToList();
possiblePeakAssignments = grouped_relations.Select(r => r.candidate_ptmset).ToList();
DeltaMass = possiblePeakAssignments.First().mass;
}
foreach (ProteoformRelation mass_difference in grouped_relations)
{
foreach (Proteoform p in mass_difference.connected_proteoforms)
{
lock (p) p.relationships.Add(mass_difference);
}
}
possiblePeakAssignments_string = "[" + string.Join("][", possiblePeakAssignments.OrderBy(p => p.ptm_rank_sum).Select(ptmset =>
string.Join(";", ptmset.ptm_combination.Select(ptm =>
UnlocalizedModification.LookUpId(ptm.modification)))).Distinct()) + "]";
Accepted = grouped_relations != null && grouped_relations.Count > 0 && grouped_relations.First().RelationType == ProteoformComparison.ExperimentalTheoretical ?
(peak_relation_group_count >= Sweet.lollipop.min_peak_count_et)
:
(peak_relation_group_count >= Sweet.lollipop.min_peak_count_ee && (!Sweet.lollipop.ee_accept_peaks_based_on_rank || possiblePeakAssignments.Count > 0 && possiblePeakAssignments.Any(p => p.ptm_rank_sum < Sweet.lollipop.mod_rank_first_quartile)));
}
private bool assign_pf_identity(ExperimentalProteoform e, PtmSet set, int begin, int end, ProteoformRelation r, TheoreticalProteoform theoretical_base, List <Proteoform> linked_proteoform_references, bool check_ambiguous_IDs)
{
bool identification_assigned = false;
if (!Sweet.lollipop.id_use_ppm_tolerance || Math.Abs(e.calculate_mass_error(theoretical_base, set, begin, end) * 1e6 / e.modified_mass) < Sweet.lollipop.id_ppm_tolerance)
{
int new_begin = begin;
int new_end = end;
PtmSet new_set = new PtmSet(new List <Ptm>(set.ptm_combination));
List <Ptm> remove = new List <Ptm>();
//do retention of M first
foreach (var mod in new_set.ptm_combination.Where(m => m.modification.ModificationType == "AminoAcid"))
{
new_begin--;
remove.Add(mod);
}
foreach (var mod in new_set.ptm_combination.Where(m => m.modification.ModificationType == "Missing"))
{
if (!new_set.ptm_combination.Any(m => m.modification.ModificationType == "AminoAcid") && begin >= theoretical_base.begin)
{
if (theoretical_base.sequence[begin - theoretical_base.begin].ToString() ==
mod.modification.Target.ToString())
{
new_begin++;
remove.Add(mod); //dont have in ptmset --> change the begin & end
}
}
if (!remove.Contains(mod) && theoretical_base.sequence[end - theoretical_base.begin].ToString() ==
mod.modification.Target.ToString())
{
new_end--;
remove.Add(mod);
}
}
foreach (var ptm in remove)
{
new_set.ptm_combination.Remove(ptm);
}
new_set = new PtmSet(new_set.ptm_combination);
if (e.linked_proteoform_references == null)
{
identification_assigned = true;
if (linked_proteoform_references != null)
{
e.linked_proteoform_references = new List <Proteoform>(linked_proteoform_references);
e.linked_proteoform_references.Add(this);
}
else
{
e.linked_proteoform_references = new List <Proteoform>()
{
theoretical_base
};
}
e.relation_to_id = r;
e.ptm_set = new_set;
e.begin = new_begin;
e.end = new_end;
if (e.gene_name == null)
{
e.gene_name = theoretical_base.gene_name;
}
else
{
e.gene_name.gene_names.Concat(this.gene_name.gene_names);
}
}
else
{
if (linked_proteoform_references != null && !linked_proteoform_references.Contains(e))
{
bool different_id = e.gene_name.get_prefered_name(Lollipop.preferred_gene_label) !=
theoretical_base.gene_name.get_prefered_name(Lollipop.preferred_gene_label) ||
ExperimentalProteoform.get_sequence(e.linked_proteoform_references.First() as TheoreticalProteoform, e.begin, e.end)
!= ExperimentalProteoform.get_sequence(theoretical_base, new_begin, new_end) || !e.ptm_set.same_ptmset(new_set, true);
List <Modification> this_known_mods = theoretical_base.ExpandedProteinList.SelectMany(p => p.OneBasedPossibleLocalizedModifications).SelectMany(kv => kv.Value).Where(v => v.MonoisotopicMass != 0).ToList();
List <Modification> previous_id_known_mods = (e.linked_proteoform_references.First() as TheoreticalProteoform).ExpandedProteinList.SelectMany(p => p.OneBasedPossibleLocalizedModifications).SelectMany(kv => kv.Value).Where(v => v.MonoisotopicMass != 0).ToList();
if (!Sweet.lollipop.topdown_theoretical_reduce_ambiguity || (theoretical_base.topdown_theoretical && !(e.linked_proteoform_references.First() as TheoreticalProteoform).topdown_theoretical))
{
if (!Sweet.lollipop.annotated_PTMs_reduce_ambiguity ||
(new_set.ptm_combination.All(mod1 => modification_is_adduct(mod1.modification) || this_known_mods.Select(mod2 => UnlocalizedModification.LookUpId(mod2)).Contains(UnlocalizedModification.LookUpId(mod1.modification))) &&
!e.ptm_set.ptm_combination.All(mod1 => modification_is_adduct(mod1.modification) || previous_id_known_mods.Select(mod2 => UnlocalizedModification.LookUpId(mod2)).Contains(UnlocalizedModification.LookUpId(mod1.modification)))))
{
if (Sweet.lollipop.topdown_theoretical_reduce_ambiguity || Sweet.lollipop.annotated_PTMs_reduce_ambiguity)
{
if (Sweet.lollipop.remove_bad_connections && different_id) //&& e.relation_to_id != r)
{
e.relation_to_id.Identification = false;
e.relation_to_id.represented_ptmset = null;
}
e.linked_proteoform_references = null;
e.ptm_set = new PtmSet(new List <Ptm>());
e.begin = 0;
e.end = 0;
e.gene_name = null;
e.ambiguous_identifications.Clear();
ProteoformRelation relation = null;
e.relation_to_id = relation;
//reassign the topdown - based ID
return(this.assign_pf_identity(e, set, begin, end, r, theoretical_base, linked_proteoform_references, true));
}
}
}
if (Sweet.lollipop.topdown_theoretical_reduce_ambiguity && (e.linked_proteoform_references.First() as TheoreticalProteoform).topdown_theoretical && !theoretical_base.topdown_theoretical)
{
}
else if (Sweet.lollipop.annotated_PTMs_reduce_ambiguity &&
!new_set.ptm_combination.All(mod1 => modification_is_adduct(mod1.modification) || this_known_mods.Select(mod2 => UnlocalizedModification.LookUpId(mod2)).Contains(UnlocalizedModification.LookUpId(mod1.modification))) &&
e.ptm_set.ptm_combination.All(mod1 => modification_is_adduct(mod1.modification) || previous_id_known_mods.Select(mod2 => UnlocalizedModification.LookUpId(mod2)).Contains(UnlocalizedModification.LookUpId(mod1.modification))))
{
}
else
{
if (different_id)
{
var new_linked_proteoform_references = new List <Proteoform>(linked_proteoform_references);
new_linked_proteoform_references.Add(this);
AmbiguousIdentification new_id =
new AmbiguousIdentification(new_begin, new_end, new_set, r, theoretical_base, new_linked_proteoform_references);
lock (e.ambiguous_identifications)
{
if (!e.ambiguous_identifications.Any(p =>
p.theoretical_base.gene_name.primary ==
new_id.theoretical_base.gene_name.primary &&
ExperimentalProteoform.get_sequence(p.theoretical_base, p.begin, p.end) == ExperimentalProteoform.get_sequence(new_id.theoretical_base, new_id.begin, new_id.end) &&
p.ptm_set.same_ptmset(new_id.ptm_set, true)))
{
e.ambiguous_identifications.Add(new_id);
identification_assigned = true;
}
}
}
}
}
}
}
if (check_ambiguous_IDs)
{
//remove bad relations if using td to reduce ambiguity
if (identification_assigned)
{
List <AmbiguousIdentification> to_remove = new List <AmbiguousIdentification>();
List <Modification> previous_id_known_mods = (e.linked_proteoform_references.First() as TheoreticalProteoform).ExpandedProteinList.SelectMany(p => p.OneBasedPossibleLocalizedModifications).SelectMany(kv => kv.Value).Where(m => m.MonoisotopicMass != 0).ToList();
if (theoretical_base.topdown_theoretical && Sweet.lollipop.topdown_theoretical_reduce_ambiguity)
{
to_remove.AddRange(e.ambiguous_identifications.Where(id => !id.theoretical_base.topdown_theoretical));
}
if (Sweet.lollipop.annotated_PTMs_reduce_ambiguity &&
e.ptm_set.ptm_combination.All(mod1 => modification_is_adduct(mod1.modification) || previous_id_known_mods.Select(mod2 => UnlocalizedModification.LookUpId(mod2)).Contains(UnlocalizedModification.LookUpId(mod1.modification))))
{
foreach (var ambiguous_id in e.ambiguous_identifications)
{
List <Modification> ambiguous_id_known_mods = ambiguous_id.theoretical_base.ExpandedProteinList.SelectMany(p => p.OneBasedPossibleLocalizedModifications).SelectMany(kv => kv.Value).Where(m => m.MonoisotopicMass != 0).ToList();
if (ambiguous_id.ptm_set.ptm_combination.Any(mod1 => !modification_is_adduct(mod1.modification) && !ambiguous_id_known_mods.Select(mod2 => UnlocalizedModification.LookUpId(mod2)).Contains(UnlocalizedModification.LookUpId(mod1.modification))))
{
to_remove.Add(ambiguous_id);
}
}
}
foreach (var x in to_remove)
{
if (e.ambiguous_identifications.Contains(x))
{
e.ambiguous_identifications.Remove(x);
if (Sweet.lollipop.remove_bad_connections)
{
if (e.relation_to_id != x.relation)
{
x.relation.Identification = false;
x.relation.represented_ptmset = null;
}
}
}
}
foreach (var x in e.ambiguous_identifications)
{
x.relation.Identification = true;
}
}
if (this as ExperimentalProteoform != null && (this as ExperimentalProteoform).ambiguous_identifications.Count > 0)
{
lock ((this as ExperimentalProteoform).ambiguous_identifications)
{
int count = (this as ExperimentalProteoform).ambiguous_identifications.Count;
PtmSet[] new_ptm_set = new PtmSet[count];
Parallel.For(0, count, i =>
{
var id = (this as ExperimentalProteoform).ambiguous_identifications[i];
new_ptm_set[i] = determine_mod_change(e, this, id.theoretical_base, r, id.ptm_set, id.begin, id.end);
});
for (int i = 0; i < count; i++)
{
if (new_ptm_set[i] != null)
{
var id = (this as ExperimentalProteoform).ambiguous_identifications[i];
if (assign_pf_identity(e, new_ptm_set[i], id.begin, id.end, r, id.theoretical_base, id.linked_proteoform_references, false))
{
identification_assigned = true;
}
}
}
}
}
}
return(identification_assigned);
}
private static PtmSet determine_mod_change(ExperimentalProteoform e, Proteoform p,
TheoreticalProteoform theoretical_base, ProteoformRelation r, PtmSet this_ptmset, int begin, int end)
{
double mass_tolerance = p.modified_mass / 1000000 * Sweet.lollipop.mass_tolerance;
int sign = Math.Sign(e.modified_mass - p.modified_mass);
double deltaM =
Math.Sign(r.peak.DeltaMass) < 0
? r.peak.DeltaMass
: sign * r.peak
.DeltaMass; // give EE relations the correct sign, but don't switch negative ET relation deltaM's
List <PtmSet> possible_additions = r.peak.possiblePeakAssignments
.Where(peak => Math.Abs(peak.mass - deltaM) <= 1)
.ToList(); // EE relations have PtmSets around both positive and negative deltaM, so remove the ones around the opposite of the deltaM of interest
PtmSet best_addition = generate_possible_added_ptmsets(possible_additions,
Sweet.lollipop.theoretical_database.all_mods_with_mass, theoretical_base, begin, end,
this_ptmset, 1, true)
.OrderBy(x =>
(double)x.ptm_rank_sum +
Math.Abs(x.mass - deltaM) *
10E-6) // major score: delta rank; tie breaker: deltaM, where it's always less than 1
.FirstOrDefault();
List <PtmSet> best_losses = new List <PtmSet>();
foreach (PtmSet set in r.peak.possiblePeakAssignments)
//Parallel.ForEach(Sweet.lollipop.theoretical_database.all_possible_ptmsets, set =>
{
bool within_loss_tolerance = deltaM >= -set.mass - mass_tolerance && deltaM <= -set.mass + mass_tolerance;
if (within_loss_tolerance)
{
List <Modification> these_mods = this_ptmset.ptm_combination.Select(ptm => ptm.modification).ToList();
List <Modification> those_mods = set.ptm_combination.Select(ptm => ptm.modification).ToList(); // all must be in the current set to remove them
bool can_be_removed = those_mods.All(m1 => these_mods.Count(m2 =>
UnlocalizedModification.LookUpId(m2) ==
UnlocalizedModification.LookUpId(m1)) >=
those_mods.Count(m2 =>
UnlocalizedModification.LookUpId(m2) ==
UnlocalizedModification.LookUpId(m1)));
lock (best_losses)
{
if (can_be_removed && within_loss_tolerance)
{
best_losses.Add(set);
}
}
}
} //);
PtmSet best_loss = best_losses.OrderBy(s => Math.Abs(deltaM - (-s.mass))).FirstOrDefault();
if (best_addition == null && best_loss == null)
{
return(null);
}
// Make the new ptmset with ptms removed or added
PtmSet with_mod_change = null;
if (best_loss == null)
{
with_mod_change = new PtmSet(new List <Ptm>(this_ptmset.ptm_combination
.Concat(best_addition.ptm_combination).Where(ptm => ptm.modification.MonoisotopicMass != 0)
.ToList()));
}
else
{
List <Ptm> new_combo = new List <Ptm>(this_ptmset.ptm_combination);
foreach (Ptm ptm in best_loss.ptm_combination)
{
new_combo.Remove(new_combo.FirstOrDefault(asdf => UnlocalizedModification.LookUpId(asdf.modification) == UnlocalizedModification.LookUpId(ptm.modification)));
}
with_mod_change = new PtmSet(new_combo);
}
if (r.represented_ptmset == null)
{
r.represented_ptmset = best_loss == null ? best_addition : best_loss;
//if (r.RelationType == ProteoformComparison.ExperimentalExperimental)
//{
// r.DeltaMass *= sign;
//}
}
return(with_mod_change);
}
private void assign_pf_identity(ExperimentalProteoform e, PtmSet set, ProteoformRelation r, TheoreticalProteoform theoretical_base)
{
if (e.linked_proteoform_references == null)
{
e.linked_proteoform_references = new List <Proteoform>(this.linked_proteoform_references);
e.linked_proteoform_references.Add(this);
e.ptm_set = set;
e.begin = this.begin;
e.end = this.end;
List <Ptm> remove = new List <Ptm>();
//do retention of M first
foreach (var mod in set.ptm_combination.Where(m => m.modification.ModificationType == "AminoAcid"))
{
e.begin--;
remove.Add(mod);
}
foreach (var mod in set.ptm_combination.Where(m => m.modification.ModificationType == "Missing"))
{
if (theoretical_base.sequence[this.begin - theoretical_base.begin].ToString() == mod.modification.Target.ToString())
{
e.begin++;
remove.Add(mod); //dont have in ptmset --> change the begin & end
}
else if (theoretical_base.sequence[this.end - this.begin].ToString() == mod.modification.Target.ToString())
{
e.end--;
remove.Add(mod);
}
}
foreach (var ptm in remove)
{
e.ptm_set.ptm_combination.Remove(ptm);
}
e.ptm_set = new PtmSet(e.ptm_set.ptm_combination);
if (e.gene_name == null)
{
e.gene_name = this.gene_name;
}
else if (!e.topdown_id)
{
e.gene_name.gene_names.Concat(this.gene_name.gene_names);
}
}
else
{
//check if assign
int begin = this.begin;
int end = this.end;
PtmSet ptm_set = set;
List <Ptm> remove = new List <Ptm>();
//do retention of M first
foreach (var mod in set.ptm_combination.Where(m => m.modification.ModificationType == "AminoAcid"))
{
begin--;
remove.Add(mod);
}
foreach (var mod in set.ptm_combination.Where(m => m.modification.ModificationType == "Missing"))
{
if (theoretical_base.sequence[this.begin - theoretical_base.begin].ToString() ==
mod.modification.Target.ToString())
{
begin++;
remove.Add(mod); //dont have in ptmset --> change the begin & end
}
else if (theoretical_base.sequence[this.end - this.begin].ToString() ==
mod.modification.Target.ToString())
{
end--;
remove.Add(mod);
}
}
foreach (var ptm in remove)
{
ptm_set.ptm_combination.Remove(ptm);
}
ptm_set = new PtmSet(ptm_set.ptm_combination);
if (e.gene_name.get_prefered_name(Lollipop.preferred_gene_label) !=
this.gene_name.get_prefered_name(Lollipop.preferred_gene_label) ||
e.begin != begin || e.end != end || !e.ptm_set.same_ptmset(ptm_set, true))
{
e.ambiguous = true;
Proteoform linked_proteoform_reference =
this.linked_proteoform_references == null || this.linked_proteoform_references.Count == 0
? this
: this.linked_proteoform_references.First();
Tuple <Proteoform, int, int, PtmSet> new_id =
new Tuple <Proteoform, int, int, PtmSet>(linked_proteoform_reference, begin, end, ptm_set);
lock (e.ambiguous_identifications)
{
if (!e.ambiguous_identifications.Any(p =>
p.Item1.gene_name.get_prefered_name(Lollipop.preferred_gene_label) ==
new_id.Item1.gene_name.get_prefered_name(Lollipop.preferred_gene_label) &&
p.Item2 == new_id.Item2 && p.Item3 == new_id.Item3 &&
p.Item4.same_ptmset(new_id.Item4, true)))
{
e.ambiguous_identifications.Add(new_id);
}
}
}
}
if (this as ExperimentalProteoform != null && (this as ExperimentalProteoform).ambiguous)
{
foreach (var id in this.ambiguous_identifications)
{
TheoreticalProteoform id_theoretical_base = id.Item1 as TheoreticalProteoform;
int begin = id.Item2;
int end = id.Item3;
var remove = new List <Ptm>();
var ptm_set = determine_mod_change(e, this, id_theoretical_base, r, id.Item4);
if (ptm_set == null)
{
continue;
}
//do retention of M first
foreach (var mod in ptm_set.ptm_combination.Where(m => m.modification.ModificationType == "AminoAcid"))
{
begin--;
remove.Add(mod);
}
foreach (var mod in ptm_set.ptm_combination.Where(m => m.modification.ModificationType == "Missing"))
{
if (id_theoretical_base.sequence[id.Item2 - id.Item1.begin].ToString() == mod.modification.Target.ToString())
{
begin++;
remove.Add(mod); //dont have in ptmset --> change the begin & end
}
else if (id_theoretical_base.sequence[id.Item3 - id.Item2].ToString() == mod.modification.Target.ToString())
{
end--;
remove.Add(mod);
}
}
foreach (var ptm in remove)
{
ptm_set.ptm_combination.Remove(ptm);
}
ptm_set = new PtmSet(ptm_set.ptm_combination);
lock (e.ambiguous_identifications)
{
var new_id = new Tuple <Proteoform, int, int, PtmSet>(id.Item1, begin, end, ptm_set);
if ((e.gene_name.get_prefered_name(Lollipop.preferred_gene_label) !=
new_id.Item1.gene_name.get_prefered_name(Lollipop.preferred_gene_label) ||
e.begin != new_id.Item2 || e.end != new_id.Item3 || !e.ptm_set.same_ptmset(new_id.Item4, true)) &&
!e.ambiguous_identifications.Any(p =>
p.Item1.gene_name.get_prefered_name(Lollipop.preferred_gene_label) ==
new_id.Item1.gene_name.get_prefered_name(Lollipop.preferred_gene_label) &&
p.Item2 == new_id.Item2 && p.Item3 == new_id.Item3 &&
p.Item4.same_ptmset(new_id.Item4, true)))
{
e.ambiguous_identifications.Add(new_id);
e.ambiguous = true;
}
}
}
}
e.uniprot_mods = "";
foreach (string mod in e.ptm_set.ptm_combination.Concat(e.ambiguous_identifications.SelectMany(i => i.Item4.ptm_combination)).Where(ptm => ptm.modification.ModificationType != "Deconvolution Error").Select(ptm => UnlocalizedModification.LookUpId(ptm.modification)).ToList().Distinct().OrderBy(m => m))
{
// positions with mod
List <int> theo_ptms = theoretical_base.ExpandedProteinList.First()
.OneBasedPossibleLocalizedModifications
.Where(p => p.Key >= e.begin && p.Key <= e.end &&
p.Value.Select(m => UnlocalizedModification.LookUpId(m)).Contains(mod))
.Select(m => m.Key).ToList();
if (theo_ptms.Count > 0)
{
e.uniprot_mods += mod + " @ " + string.Join(", ", theo_ptms) + "; ";
}
if (e.ptm_set.ptm_combination.Select(ptm => UnlocalizedModification.LookUpId(ptm.modification))
.Count(m => m == mod) > theo_ptms.Count ||
e.ambiguous_identifications.Any(i => i.Item4.ptm_combination.Select(ptm => UnlocalizedModification.LookUpId(ptm.modification))
.Count(m => m == mod) > theo_ptms.Count))
{
e.novel_mods = true;
}
}
//else if (!e.topdown_id && e.gene_name.get_prefered_name(Lollipop.preferred_gene_label) != this.gene_name.get_prefered_name(Lollipop.preferred_gene_label)
// && e.linked_proteoform_references.Count == this.linked_proteoform_references.Count + 1)
//{
// e.ambiguous = true;
//}
}
