microRNA (version 1.30.0)

seedRegions: A function to retrieve the seed regions from microRNA sequences

Description

The seed region of a microRNA consists of a set of nucleotides at the 5' end of the microRNA, typically bases 2 through 7, although some times 8 is used.

Usage

seedRegions(x, start = 2, stop = 7)

Arguments

x

A vector of microRNA sequences.

start

The start locations, can be a vector.

stop

The stop locations, can be a vector.

Value

A vector of the same length as x with the substrings.

Details

We use substr to extract these sequences.

See Also

substr

Examples

 data(hsSeqs)
 seedRegions(hsSeqs[1:5])
 seedRegions(hsSeqs[1:3], start=c(2,1,2), stop=c(8,7,9))