Identification method of individual differential expression protein
A technology of differential expression and identification method, which is applied in proteomics, instrumentation, genomics, etc., can solve problems such as performance improvement, and achieve the effect of ensuring stability, good application prospects, and high recognition accuracy
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[0042] Such as Figure 1 to Figure 4 As shown, the present invention discloses a method for identifying individual differentially expressed proteins, the method comprising the following steps:
[0043] S1. Preprocessing the protein abundance data;
[0044] The specific process of step S1 is:
[0045] S11. Perform statistics on the ratio of missing values for each protein in all samples in the protein abundance data, filter proteins by setting the upper limit of the missing value ratio, and remove proteins whose missing value ratio exceeds the threshold in the protein abundance data;
[0046]S12. By calculating the coefficient of variation of proteins in the same cohort, it is judged whether the difference in protein abundance among different individuals is due to heterogeneity among individuals or quantitative errors;
[0047] Proteins with a high coefficient of variation in the same cohort in step S12 are identified as caused by quantitative errors, and are screened out; ...
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