Fig. 3

Intraday dynamics of the human saliva proteome. a PCA of the 16 saliva samples showing that component 2 separates samples based on the collection time (w = waking and p = postprandial). b Differentially regulated proteins between w and p as determined by plotting the t-test significance (5 % permutation-based FDR) versus the logarithmized fold change of LFQ intensity (volcano plot). Protein data points are labeled by their gene names. The green gene names indicate genes with the Uniprot keyword “antibiotic” or “antimicrobial”, the purple gene names indicate proteins with the Uniprot keyword “secreted”