draw_wenxiang: Create Wenxiang diagrams to visualize alpha helical...

In helixvis: Visualize Alpha-Helical Peptide Sequences

Description

This function visualizes alpha-helical peptides as Wenxiang diagrams. Sequences between 2 and 18 (inclusive) characters can be visualized. The residue closest to the center represents the amino acid at the N-terminus (first in 'sequence').

Usage

draw_wenxiang(sequence, col = c("grey", "yellow", "blue", "red"),
  labels = FALSE, label.col = "black", fixed = TRUE,
  legend = FALSE)

Arguments

sequence	character vector containing amino acid sequence from N-terminus to C-terminus
col	colors for each amino acid type in the following order: nonpolar residues, polar residues, basic residues, acidic residues
labels	logical value; if TRUE, one-letter residue codes are overlaid on the residue circles
label.col	character value for color of labels added if 'labels = TRUE'
fixed	if TRUE (default), ensures that residues will be circles (not ellipses) even if graphics device is rectangular
legend	if TRUE, adds legend to plot

Examples

draw_wenxiang("GIGAVLKVLTTGLPALIS")
draw_wenxiang("QQRKRKIWSILAPLGTTL")

Example output

helixvis documentation built on May 2, 2019, 3:32 p.m.