extract.gb: Extracts and returns a specific item from .gb records
Description
This function regroup every items found in a list if they correspond to the character string specified. Works for general parts (ACCESSION, SOURCE...) and parts of FEATURES (source, gene, CDS...)
Usage
extract.gb(x, Item)
Arguments
x
The name of the list containing the records.
Item
character. The part to extract. It have to match case.