Combines consecutive modifications on amino acids in peptide sequences.

combineModifications(sequences)

Arguments

sequences: `character`. A character vector of peptide sequences with modifications in any format accepted by `convertAnnotation`. Multiple modifications per amino acid are allowed.

Value

A character vector of the same length as `sequences` with consecutive modifications on each amino acid summed into a single modification. This summed modifications is written in delta mass format.

Author

Guillaume Deflandre <guillaume.deflandre@uclouvain.be>

Examples

combineModifications("AT[+10][-5]K")
#> [1] "AT[+5]K"
combineModifications("[+10]-[-5]-ATK")
#> [1] "[+5]-ATK"
combineModifications("AT[Phospho][UNIMOD:1]K")
#> [1] "AT[+121.976896]K"
combineModifications("EM[+15.9949][-10]EK[+42][-8]")
#> [1] "EM[+5.9949]EK[+34]"
combineModifications(c("AT[+10][-5]K", "EM[+15.9949][-10]EK"))
#> [1] "AT[+5]K"       "EM[+5.9949]EK"