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 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

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

[Package seqinr version 1.0-6 Index]