a {seqinr} | R Documentation |
Converts amino-acid three-letter code into the one-letter one
Description
This is a vectorized function to convert three-letters amino-acid code into the one-letter one, for instance "Ala" into "A".
Usage
a(aa)
Arguments
aa |
A vector of string. All strings are 3 chars long. |
Details
Allowed character values for aa
are given by aaa()
.
All other values will generate a warning and return NA.
Called without arguments, a()
returns the list of all possible
output values.
Value
A vector of single characters.
Author(s)
D. Charif, J.R. Lobry
References
The IUPAC one-letter code for aminoacids is described at:
https://www.bioinformatics.org/sms/iupac.html
citation("seqinr")
See Also
Examples
#
# Show all possible input values:
#
aaa()
#
# Convert them in one letter-code:
#
a(aaa())
#
# Check consistency of results:
#
stopifnot( aaa(a(aaa())) == aaa())
#
# Show what happens with non-allowed values:
#
a("SOS") # should be NA and a warning is generated
[Package seqinr version 4.2-36 Index]