We present Meta4P
(MetaProteins-Peptides-PSMs Parser),
an easy-to-use
bioinformatic application designed to integrate label-free quantitative
metaproteomic data with taxonomic and functional annotations. Meta4P
can retrieve, filter, and process identification and quantification
data from three levels of inputs (proteins, peptides, PSMs) in different
file formats. Abundance data can be combined with taxonomic and functional
information and aggregated at different and customizable levels, including
taxon-specific functions and pathways. Meta4P output tables, available
in various formats, are ready to be used as inputs for downstream
statistical analyses. This user-friendly tool is expected to provide
a useful contribution to the field of metaproteomic data analysis,
helping make it more manageable and straightforward.