R: To Get Some Protein Statistics

AAstat {seqinr} | R Documentation

## To Get Some Protein Statistics

### Description

Returns simple protein sequence information including the number of residues, the percentage physico-chemical classes and the theoretical isoelectric point.

### Usage

    AAstat(seq, plot = TRUE)

### Arguments

`seq` | a protein sequence as a vector of upper-case chars
`plot` | if `TRUE`, plots the presence of residues splited by physico-chemical classes along the sequence.

### Value

A list with the three following components:

`Compo` | A factor giving the amino acid counts.
`Prop` | A list giving the percentage of each physico-chemical classes (Tiny, Small, Aliphatic, Aromatic, Non-polar, Polar, Charged, Positive, Negative).
`Pi` | The theoretical isoelectric point

### Author(s)

D. Charif, J.R. Lobry

### References

`citation("seqinr")`

### See Also

`computePI`, `SEQINR.UTIL`, `SeqFastaAA`

### Examples

      seqAA <- read.fasta(file = system.file("sequences/seqAA.fasta", package = "seqinr"),
       seqtype = "AA")
      AAstat(seqAA[[1]])

[Package seqinr version 3.4-5 Index]