a) Statistics of protein identifications in Human Proteome Browser by the total number of experimental methods or studies is displayed. Only, 4% of the proteins were identified by one experiment or study. A staggering 96% of the proteins were identified by 2 or more independent studies or methods while 84.6% of the proteins were identified by 6 or more. b) Genes status distribution for 799 genes that could not be identified at the protein level is shown. 37% of the genes were denoted as protein-coding models with either provisional or validated RefSeq entries. 24% were predicted protein-coding models. The remaining 39% of the genes were denoted as pseudo, miscRNA, unknown, uncertain and others by the genome annotation pipelines.

Figure 5: Distribution of proteins by number of experimental methods/studies and gene status.