charge: To compute the theoretical Net charge of a protein sequence
Description
This function calculates the theoretical net charge of a protein at defined pH.
Usage
charge(seq, pH)
Arguments
seq
Protein sequence as string in upper case
pH
pH value
References
Protein Identification and Analysis Tools on the ExPASy Server;
Gasteiger E., Hoogland C., Gattiker A., Duvaud S., Wilkins M.R., Appel R.D., Bairoch A.;
(In) John M. Walker (ed): The Proteomics Protocols Handbook, Humana Press (2005).
pp. 571-607