HuProt v3.0, has columns: block, row, column, system ID, symbol, categories, reviewed UniProt, unreviewed UnProt, CCDS, RefSeq, Ensembl

HuProt v3.1, has columns: block, row, column, system ID, symbol, categories, reviewed UniProt, unreviewed UnProt, CCDS, RefSeq, Ensembl

HuProt v4.0, has columns: system ID, symbol, nucleotide, protein, reviewed UniProt, unreviewed UnProt, CCDS, RefSeq, Ensembl, synonyms, categories