Opened 13 years ago

Closed 13 years ago

Last modified 13 years ago

#672 closed (fixed)

Protein level FDR

Reported by: Fredrik Levander Owned by: Fredrik Levander
Milestone: Proteios 2.13.0 Keywords:
Cc:

Description

The current protein assembly function will not attempt calculating FDR at the protein level. It would be useful to perform FDR estimate using the target-decoy principle. Functionality should be when this is enabled: 1) Only use peptides passing the FDR cutoff (as now) 2) Look for decoy prefix in the proteins matching the peptides. If a peptide matches both target and decoy prefixes, the decoy proteins should not be brought forward. 3) Calculate scores by multiplying the FDR of all peptides for all protein. 4) Estimate protein FDR by counting better decoy proteins at all score estimates. 5) Set protein FDR of target proteins 6) Filter protein list so that only proteins with better FDR are reported.

Change History (10)

comment:1 Changed 13 years ago by Fredrik Levander

Milestone: Proteios SE Future ReleaseProteios 2.13.0

comment:2 Changed 13 years ago by Fredrik Levander

(In [3756]) Refs #672. Added protein FDR calculation and filtering. Uppdated form accordingly.

comment:3 Changed 13 years ago by Fredrik Levander

(In [3757]) Refs #672. Updated plug-in info.

comment:4 Changed 13 years ago by Fredrik Levander

Resolution: fixed
Status: newclosed

(In [3761]) Fixes #672. Updated help text

comment:5 Changed 13 years ago by Fredrik Levander

(In [3774]) Refs #672. Corrected form.

comment:6 Changed 13 years ago by Fredrik Levander

(In [3910]) Refs #672. Avoiding rare null pointer exception

comment:7 Changed 13 years ago by Fredrik Levander

(In [3912]) Refs #672. Handling spectrum lookup problems.

comment:8 Changed 13 years ago by Fredrik Levander

(In [3913]) Refs #672. Handling peptide total intensity of null

comment:9 Changed 13 years ago by Fredrik Levander

(In [3914]) Refs #672. Handling peptide total intensity of null

comment:10 Changed 13 years ago by Fredrik Levander

(In [4113]) Refs #672. Writing precursor quantity of generated proteins based on included peptides.

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